THROUGH-HOLE Digital Counters 2,400+

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Part	Manufacturer	Logic IC Type	Temperature Grade	Terminal Form	No. of Terminals	Package Code	Package Shape	Package Body Material	Surface Mount	No. of Functions	Maximum Frequency At Nominal Supply	Technology	Screening Level	No. of Bits	Load or Preset Input	Packing Method	Nominal Supply Voltage / Vsup (V)	Power Supplies (V)	Load Capacitance (CL)	Package Style (Meter)	Package Equivalence Code	Operation Mode	Propagation Delay (tpd)	Maximum I (ol)	Sub-Category	Terminal Pitch	Maximum Operating Temperature	Count Direction	Output Characteristics	Trigger Type	Minimum Operating Temperature	Terminal Finish	Terminal Position	Minimum fmax	JESD-30 Code	Maximum Supply Voltage (Vsup)	Maximum Seated Height	Width	Qualification	Minimum Supply Voltage (Vsup)	Maximum Power Supply Current (ICC)	Additional Features	JESD-609 Code	Maximum Time At Peak Reflow Temperature (s)	Peak Reflow Temperature (C)	Length	Family
SN74LS393N-00	Texas Instruments	BINARY COUNTER	COMMERCIAL	THROUGH-HOLE	14	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	2		TTL		4	YES		5		15 pF	IN-LINE		ASYNCHRONOUS	60 ns			2.54 mm	70 Cel	UP		NEGATIVE EDGE	0 Cel		DUAL	25 MHz	R-PDIP-T14	5.25 V	5.08 mm	7.62 mm	Not Qualified	4.75 V	26 mA					19.305 mm	LS
SN74HC161J4	Texas Instruments	BINARY COUNTER	INDUSTRIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	CERAMIC	NO	1		CMOS			YES			2/6		IN-LINE	DIP16,.3	SYNCHRONOUS			Counters	2.54 mm	85 Cel	UP			-40 Cel		DUAL		R-XDIP-T16									NOT SPECIFIED	NOT SPECIFIED
CD4024AFB	Texas Instruments	BINARY COUNTER	MILITARY	THROUGH-HOLE	14	DIP	RECTANGULAR	CERAMIC	NO	1		CMOS	38535Q/M;38534H;883B		NO					IN-LINE	DIP14,.3	ASYNCHRONOUS			Counters	2.54 mm	125 Cel	UP			-55 Cel		DUAL		R-XDIP-T14				Not Qualified
SN74ALS560N	Texas Instruments	DECADE COUNTER	COMMERCIAL	THROUGH-HOLE	20	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1		TTL			YES		5	5		IN-LINE	DIP20,.3	SYNCHRONOUS			Counters	2.54 mm	70 Cel	UP	3-STATE		0 Cel		DUAL		R-PDIP-T20				Not Qualified
SN74ALS162N	Texas Instruments	DECADE COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	30000000 Hz	TTL			YES		5	5		IN-LINE	DIP16,.3	SYNCHRONOUS			Counters	2.54 mm	70 Cel	UP			0 Cel		DUAL		R-PDIP-T16				Not Qualified
SN74AS168J	Texas Instruments	DECADE COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	CERAMIC	NO	1		TTL			YES					IN-LINE	DIP16,.3	SYNCHRONOUS			Counters	2.54 mm	70 Cel	BIDIRECTIONAL			0 Cel		DUAL		R-XDIP-T16				Not Qualified
SN74ALS867NT	Texas Instruments	BINARY COUNTER	COMMERCIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	45000000 Hz	TTL		8	YES		5		500 pF	IN-LINE	DIP24,.3	SYNCHRONOUS		8 Amp	Counters	2.54 mm	70 Cel	BIDIRECTIONAL		POSITIVE EDGE	0 Cel		DUAL	45 MHz	R-PDIP-T24	5.5 V	5.08 mm	7.62 mm	Not Qualified	4.5 V		TCO OUTPUT		NOT SPECIFIED	NOT SPECIFIED	31.64 mm	ALS
SN74HC590J4	Texas Instruments	BINARY COUNTER	INDUSTRIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	CERAMIC	NO	1		CMOS			NO			2/6		IN-LINE	DIP16,.3	ASYNCHRONOUS			Counters	2.54 mm	85 Cel	UP	3-STATE		-40 Cel		DUAL		R-XDIP-T16									NOT SPECIFIED	NOT SPECIFIED
SN74LS190NP3	Texas Instruments	DECADE COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	20000000 Hz	TTL			YES		5	5		IN-LINE	DIP16,.3	SYNCHRONOUS		8 Amp	Counters	2.54 mm	70 Cel	BIDIRECTIONAL			0 Cel		DUAL		R-PDIP-T16						35 mA
SN7492AJ	Texas Instruments	DIVIDE BY 12 COUNTER	COMMERCIAL	THROUGH-HOLE	14	DIP	RECTANGULAR	CERAMIC, GLASS-SEALED	NO	2	16000000 Hz	TTL		3	NO		5	5	15 pF	IN-LINE	DIP14,.3	ASYNCHRONOUS	35 ns	16 Amp	Counters	2.54 mm	70 Cel	UP		NEGATIVE EDGE	0 Cel		DUAL	16 MHz	R-GDIP-T14	5.25 V	5.08 mm	7.62 mm	Not Qualified	4.75 V	39 mA	DIVIDE BY 2 AND DIVIDE BY 6 FUNCTIONS		NOT SPECIFIED	NOT SPECIFIED	19.56 mm	TTL/H/L
DM74LS161N/A+	Texas Instruments	BINARY COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	25000000 Hz	TTL			YES		5	5		IN-LINE	DIP16,.3	SYNCHRONOUS		8 Amp	Counters	2.54 mm	70 Cel	UP			0 Cel	Tin/Lead (Sn/Pb)	DUAL		R-PDIP-T16						32 mA		e0
SN7490AJ4	Texas Instruments	DECADE COUNTER	COMMERCIAL	THROUGH-HOLE	14	DIP	RECTANGULAR	CERAMIC	NO	1		TTL			NO		5	5		IN-LINE	DIP14,.3	ASYNCHRONOUS			Counters	2.54 mm	70 Cel	UP			0 Cel		DUAL		R-XDIP-T14
CD4518BCN/A+	Texas Instruments	DECADE COUNTER		THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	2		CMOS		4	NO		5		50 pF	IN-LINE		SYNCHRONOUS	650 ns				85 Cel	UP		POSITIVE EDGE	-40 Cel		DUAL		R-PDIP-T16	15 V				3 V							4000/14000/40000
SN74LS190N1	Texas Instruments	DECADE COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	20000000 Hz	TTL			YES		5	5		IN-LINE	DIP16,.3	SYNCHRONOUS		8 Amp	Counters	2.54 mm	70 Cel	BIDIRECTIONAL			0 Cel		DUAL		R-PDIP-T16				Not Qualified		35 mA
SN74HC690J4	Texas Instruments	DECADE COUNTER	INDUSTRIAL	THROUGH-HOLE	20	DIP	RECTANGULAR	CERAMIC	NO	1		CMOS			YES		5	5		IN-LINE	DIP20,.3	SYNCHRONOUS			Counters	2.54 mm	85 Cel	BIDIRECTIONAL	3-STATE		-40 Cel		DUAL		R-XDIP-T20									NOT SPECIFIED	NOT SPECIFIED
SN74ALS160BN3	Texas Instruments	DECADE COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	40000000 Hz	TTL			YES		5	5		IN-LINE	DIP16,.3	SYNCHRONOUS			Counters	2.54 mm	70 Cel	UP			0 Cel		DUAL		R-PDIP-T16
SN74HC692NP1	Texas Instruments	DECADE COUNTER	INDUSTRIAL	THROUGH-HOLE	20	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1		CMOS			YES		5	5		IN-LINE	DIP20,.3	SYNCHRONOUS			Counters	2.54 mm	85 Cel	BIDIRECTIONAL	3-STATE		-40 Cel		DUAL		R-PDIP-T20				Not Qualified					NOT SPECIFIED	NOT SPECIFIED
JM38510/32702BCA	Texas Instruments	BINARY COUNTER	MILITARY	THROUGH-HOLE	14	DIP	RECTANGULAR	CERAMIC, GLASS-SEALED	NO	2	25000000 Hz	TTL	MIL-M-38510	3		TUBE	5		15 pF	IN-LINE		ASYNCHRONOUS	60 ns	8 Amp		2.54 mm	125 Cel	UP		NEGATIVE EDGE	-55 Cel	Tin/Lead (Sn/Pb)	DUAL	25 MHz	R-GDIP-T14	5.5 V	5.08 mm	7.62 mm	Not Qualified	4.5 V	26 mA	DIVIDE BY 2 AND DIVIDE BY 5 FUNCTIONS	e0	NOT SPECIFIED	NOT SPECIFIED	19.56 mm	LS
SN74AS168JP4	Texas Instruments	DECADE COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	CERAMIC	NO	1		TTL			YES					IN-LINE	DIP16,.3	SYNCHRONOUS			Counters	2.54 mm	70 Cel	BIDIRECTIONAL			0 Cel		DUAL		R-XDIP-T16
CD40102BEE4	Texas Instruments	DECADE COUNTER	MILITARY	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	700000 Hz	CMOS		8	YES	TUBE	5	5/15	50 pF	IN-LINE	DIP16,.3	SYNCHRONOUS	600 ns		Counters	2.54 mm	125 Cel	DOWN		POSITIVE EDGE	-55 Cel	NICKEL PALLADIUM GOLD	DUAL	2.4 MHz	R-PDIP-T16	18 V	5.08 mm	7.62 mm	Not Qualified	3 V			e4			19.305 mm	4000/14000/40000
SN74293J-00	Texas Instruments	BINARY COUNTER	COMMERCIAL	THROUGH-HOLE	14	DIP	RECTANGULAR	CERAMIC, GLASS-SEALED	NO	2		TTL		3	YES		5		15 pF	IN-LINE		ASYNCHRONOUS	70 ns			2.54 mm	70 Cel	UP		NEGATIVE EDGE	0 Cel		DUAL	32 MHz	R-GDIP-T14	5.25 V	5.08 mm	7.62 mm	Not Qualified	4.75 V	39 mA	DIVIDE BY 2 AND DIVIDE BY 8 FUNCTIONS				19.56 mm	TTL/H/L
SN74LS668JP4	Texas Instruments	DECADE COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	CERAMIC	NO	1		TTL			YES		5	5		IN-LINE	DIP16,.3	SYNCHRONOUS			Counters	2.54 mm	70 Cel	BIDIRECTIONAL			0 Cel		DUAL		R-XDIP-T16									NOT SPECIFIED	NOT SPECIFIED
SN74ALS163J	Texas Instruments	BINARY COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	CERAMIC	NO	1	30000000 Hz	TTL			YES		5	5		IN-LINE	DIP16,.3	SYNCHRONOUS			Counters	2.54 mm	70 Cel	UP			0 Cel		DUAL		R-XDIP-T16				Not Qualified
SN74LS69N3	Texas Instruments	BINARY COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	2		TTL			NO					IN-LINE	DIP16,.3	ASYNCHRONOUS			Counters	2.54 mm	70 Cel	UP			0 Cel		DUAL		R-PDIP-T16									NOT SPECIFIED	NOT SPECIFIED
SN54HC4020J	Texas Instruments	BINARY COUNTER	MILITARY	THROUGH-HOLE	16	DIP	RECTANGULAR	CERAMIC, GLASS-SEALED	NO	1	19000000 Hz	CMOS		14		TUBE	5	2/6	50 pF	IN-LINE	DIP16,.3	ASYNCHRONOUS	225 ns	5.2 Amp	Counters	2.54 mm	125 Cel	UP		NEGATIVE EDGE	-55 Cel	Tin/Lead (Sn/Pb)	DUAL	22 MHz	R-GDIP-T16	6 V	5.08 mm	7.62 mm	Not Qualified	2 V	.08 mA	12 OUTPUTS AVAILABLE	e0	NOT SPECIFIED	NOT SPECIFIED	19.56 mm	HC/UH
SN74ALS163AN1	Texas Instruments	BINARY COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	30000000 Hz	TTL			YES		5	5		IN-LINE	DIP16,.3	SYNCHRONOUS			Counters	2.54 mm	70 Cel	UP			0 Cel		DUAL		R-PDIP-T16				Not Qualified
SN74ALS168N1	Texas Instruments	DECADE COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1		TTL			YES		5	5		IN-LINE	DIP16,.3	SYNCHRONOUS			Counters	2.54 mm	70 Cel	BIDIRECTIONAL			0 Cel		DUAL		R-PDIP-T16				Not Qualified
SN74LS698N	Texas Instruments	DECADE COUNTER	COMMERCIAL	THROUGH-HOLE	20	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1		TTL		4	YES		5		45 pF	IN-LINE	DIP20,.3	SYNCHRONOUS	25 ns		Counters	2.54 mm	70 Cel	BIDIRECTIONAL	3-STATE	POSITIVE EDGE	0 Cel		DUAL		R-PDIP-T20	5.25 V	5.08 mm	7.62 mm	Not Qualified	4.75 V	70 mA	REGISTER/COUNTER OUTPUT SELECT; TCO OUTPUT; REGISTERED OUTPUTS		NOT SPECIFIED	NOT SPECIFIED	24.325 mm	LS
SN7490AJ	Texas Instruments	DECADE COUNTER	COMMERCIAL	THROUGH-HOLE	14	DIP	RECTANGULAR	CERAMIC, GLASS-SEALED	NO	2	16000000 Hz	TTL		3	YES		5	5	15 pF	IN-LINE	DIP14,.3	ASYNCHRONOUS	35 ns	16 Amp	Counters	2.54 mm	70 Cel	UP		NEGATIVE EDGE	0 Cel		DUAL	16 MHz	R-GDIP-T14	5.25 V	5.08 mm	7.62 mm	Not Qualified	4.75 V	42 mA	DIVIDE BY 2 AND DIVIDE BY 5 FUNCTIONS		NOT SPECIFIED	NOT SPECIFIED	19.56 mm	TTL/H/L
SN74LS169AJ	Texas Instruments	BINARY COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	CERAMIC	NO	1	25000000 Hz	TTL			YES		5	5		IN-LINE	DIP16,.3	SYNCHRONOUS		8 Amp	Counters	2.54 mm	70 Cel	BIDIRECTIONAL			0 Cel		DUAL		R-XDIP-T16				Not Qualified					NOT SPECIFIED	NOT SPECIFIED
5962-01-267-4874	Texas Instruments	BINARY COUNTER	MILITARY	THROUGH-HOLE	20	DIP	RECTANGULAR	CERAMIC	NO	1		TTL			YES					IN-LINE	DIP20,.3	SYNCHRONOUS			Counters	2.54 mm	125 Cel	BIDIRECTIONAL	3-STATE		-55 Cel		DUAL		R-XDIP-T20				Not Qualified					NOT SPECIFIED	NOT SPECIFIED
SN74HC4040J4	Texas Instruments	BINARY COUNTER	INDUSTRIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	CERAMIC	NO	1		CMOS			NO			2/6		IN-LINE	DIP16,.3	ASYNCHRONOUS			Counters	2.54 mm	85 Cel	UP			-40 Cel		DUAL		R-XDIP-T16
SN74ALS162NP1	Texas Instruments	DECADE COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	30000000 Hz	TTL			YES		5	5		IN-LINE	DIP16,.3	SYNCHRONOUS			Counters	2.54 mm	70 Cel	UP			0 Cel		DUAL		R-PDIP-T16				Not Qualified
CD74HCT4520EE4	Texas Instruments	BINARY COUNTER	MILITARY	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	2	17000000 Hz	CMOS		4	YES		5	5	50 pF	IN-LINE	DIP16,.3	SYNCHRONOUS	80 ns	4 Amp	Counters	2.54 mm	125 Cel	UP		POSITIVE EDGE	-55 Cel	NICKEL PALLADIUM GOLD	DUAL	17 MHz	R-PDIP-T16	5.5 V	5.08 mm	7.62 mm	Not Qualified	4.5 V		NEGATIVE EDGE TRIGGER TYPE ALSO POSSIBLE	e4			19.305 mm	HCT
SN74ALS160BNP3	Texas Instruments	DECADE COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	40000000 Hz	TTL			YES		5	5		IN-LINE	DIP16,.3	SYNCHRONOUS			Counters	2.54 mm	70 Cel	UP			0 Cel		DUAL		R-PDIP-T16
5962-9084801MEA	Texas Instruments	BINARY COUNTER	MILITARY	THROUGH-HOLE	16	DIP	RECTANGULAR	CERAMIC, GLASS-SEALED	NO	1	15000000 Hz	CMOS	MIL-STD-883	4		TUBE	5	5	50 pF	IN-LINE	DIP16,.3	SYNCHRONOUS	60 ns	4 Amp	Counter	2.54 mm	125 Cel	BIDIRECTIONAL		POSITIVE EDGE	-55 Cel	TIN LEAD	DUAL	15 MHz	R-GDIP-T16	5.5 V	5.08 mm	7.62 mm	Qualified	4.5 V	.08 mA	TCO UP AND TCO DOWN OUTPUTS; SEPARATE UP/DOWN CLOCK	e0			19.56 mm	HCT
SN74L90N-10	Texas Instruments	DECADE COUNTER	COMMERCIAL	THROUGH-HOLE	14	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	2		TTL		3	YES		5			IN-LINE		ASYNCHRONOUS				2.54 mm	70 Cel	UP		NEGATIVE EDGE	0 Cel		DUAL	3 MHz	R-PDIP-T14	5.25 V	5.08 mm	7.62 mm	Not Qualified	4.75 V	7.2 mA	DIVIDE BY 2 AND DIVIDE BY 5 FUNCTIONS				19.305 mm	TTL/H/L
SN74HC693NP1	Texas Instruments	BINARY COUNTER	INDUSTRIAL	THROUGH-HOLE	20	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1		CMOS			YES		5	5		IN-LINE	DIP20,.3	SYNCHRONOUS			Counters	2.54 mm	85 Cel	BIDIRECTIONAL	3-STATE		-40 Cel		DUAL		R-PDIP-T20				Not Qualified					NOT SPECIFIED	NOT SPECIFIED
SN74HC698NP3	Texas Instruments	DECADE COUNTER	INDUSTRIAL	THROUGH-HOLE	20	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1		CMOS			NO		5	5		IN-LINE	DIP20,.3	SYNCHRONOUS			Counters	2.54 mm	85 Cel	BIDIRECTIONAL	3-STATE		-40 Cel		DUAL		R-PDIP-T20									NOT SPECIFIED	NOT SPECIFIED
SN74F161ANE4	Texas Instruments	BINARY COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	90000000 Hz	TTL		4		TUBE	5	5	50 pF	IN-LINE	DIP16,.3	SYNCHRONOUS	11 ns	20 Amp	Counters	2.54 mm	70 Cel	UP		POSITIVE EDGE	0 Cel	Nickel/Palladium/Gold (Ni/Pd/Au)	DUAL	90 MHz	R-PDIP-T16	5.5 V	5.08 mm	7.62 mm	Not Qualified	4.5 V	55 mA	TCO OUTPUT	e4	NOT SPECIFIED	NOT SPECIFIED	19.305 mm	F/FAST
5962-01-047-8571	Texas Instruments	DECADE COUNTER	MILITARY	THROUGH-HOLE	16	DIP	RECTANGULAR	CERAMIC	NO	1	25000000 Hz	TTL			YES		5	5		IN-LINE	DIP16,.3	SYNCHRONOUS		4 Amp	Counters	2.54 mm	125 Cel	UP			-55 Cel		DUAL		R-XDIP-T16				Not Qualified		32 mA			NOT SPECIFIED	NOT SPECIFIED
CD4527BF	Texas Instruments	DECADE COUNTER	MILITARY	THROUGH-HOLE	16	DIP	RECTANGULAR	CERAMIC, GLASS-SEALED	NO	1		CMOS		4	YES		5	5/15		IN-LINE	DIP16,.3	SYNCHRONOUS	220 ns		Counters	2.54 mm	125 Cel	UP		NEGATIVE EDGE	-55 Cel		DUAL	3.5 MHz	R-GDIP-T16	18 V	5.08 mm	7.62 mm	Not Qualified	3 V		BCD RATE MULTIPLIER; COMPLEMENTARY OUTPUTS				19.56 mm	4000/14000/40000
SN74LS161AN1	Texas Instruments	BINARY COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1		TTL			YES		5	5		IN-LINE	DIP16,.3	SYNCHRONOUS			Counters	2.54 mm	70 Cel	UP			0 Cel		DUAL		R-PDIP-T16				Not Qualified
CD74HC190EE4	Texas Instruments	DECADE COUNTER	MILITARY	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	20000000 Hz	CMOS		4		TUBE	4.5	2/6	50 pF	IN-LINE	DIP16,.3	SYNCHRONOUS	255 ns	5.2 Amp	Counters	2.54 mm	125 Cel	BIDIRECTIONAL		POSITIVE EDGE	-55 Cel	Nickel/Palladium/Gold (Ni/Pd/Au)	DUAL	23 MHz	R-PDIP-T16	6 V	5.08 mm	7.62 mm	Not Qualified	2 V	.08 mA	RCO OUTPUT	e4	NOT SPECIFIED	NOT SPECIFIED	19.305 mm	HC/UH
SN74LS490N-10	Texas Instruments	DECADE COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	2		TTL		4	YES		5		15 pF	IN-LINE		ASYNCHRONOUS	54 ns			2.54 mm	70 Cel	UP		NEGATIVE EDGE	0 Cel		DUAL	35 MHz	R-PDIP-T16	5.25 V	5.08 mm	7.62 mm	Not Qualified	4.75 V	26 mA					19.305 mm	LS
SN74LS193N3	Texas Instruments	BINARY COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1		TTL		4	YES		5	5		IN-LINE	DIP16,.3	SYNCHRONOUS	47 ns		Counters	2.54 mm	70 Cel	BIDIRECTIONAL		POSITIVE EDGE	0 Cel		DUAL	25 MHz	R-PDIP-T16	5.25 V	5.08 mm	7.62 mm	Not Qualified	4.75 V		TCO UP AND TCO DOWN OUTPUTS; SEPARATE UP/DOWN CLOCK		NOT SPECIFIED	NOT SPECIFIED	19.305 mm	LS
SN74ALS561AN-10	Texas Instruments	BINARY COUNTER	COMMERCIAL	THROUGH-HOLE	20	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1		TTL		4	YES		5		50 pF	IN-LINE		SYNCHRONOUS	18 ns			2.54 mm	70 Cel	UP	3-STATE	POSITIVE EDGE	0 Cel		DUAL	30 MHz	R-PDIP-T20	5.5 V	5.08 mm	7.62 mm	Not Qualified	4.5 V	33 mA	TCO OUTPUT; COUNT ENABLE INPUTS				24.325 mm	ALS
SN7490J	Texas Instruments	DECADE COUNTER	COMMERCIAL	THROUGH-HOLE	14	DIP	RECTANGULAR	CERAMIC	NO	1		TTL			NO		5	5		IN-LINE	DIP14,.3	ASYNCHRONOUS			Counters	2.54 mm	70 Cel	UP			0 Cel		DUAL		R-XDIP-T14				Not Qualified

Digital Counters

Digital counters are electronic circuits that can be used to count and keep track of the number of events or occurrences in a digital system. They are commonly used in digital systems to generate timing signals, to control sequencing, and to implement digital control functions.

Digital counters can be designed using various technologies, including transistor-transistor logic (TTL), complementary metal-oxide-semiconductor (CMOS), and field-programmable gate arrays (FPGAs). They can also be designed using various types of flip-flops, such as D flip-flops, JK flip-flops, and T flip-flops.

Digital counters can be classified into two main types: synchronous counters and asynchronous counters. Synchronous counters use a common clock signal to synchronize the operation of all the flip-flops in the counter. Asynchronous counters, on the other hand, do not use a common clock signal and rely on the propagation delay of the flip-flops to sequence their operation.

Digital counters can also be classified based on their counting sequence. They can count up, down, or both up and down, depending on the application. Up counters increment the count each time an input pulse is received, while down counters decrement the count each time an input pulse is received. Up-down counters can count both up and down, depending on the direction of the input signal.

Digital counters can be used in various applications, including frequency division, time delay generation, event counting, and sequence control. They can be used to generate timing signals for clocking digital circuits, to control the sequencing of operations in a digital system, and to implement digital control functions, such as shift registers and sequence generators.