COMMERCIAL Digital Counters 2,114

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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	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	Terminal Finish	Terminal Position	Minimum fmax	JESD-30 Code	Moisture Sensitivity Level (MSL)	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
SN74ALS190NP3	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				DUAL		R-PDIP-T16
SN74LS293N3	Texas Instruments	BINARY COUNTER	COMMERCIAL	THROUGH-HOLE	14	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1		TTL		NO		5	5		IN-LINE	DIP14,.3	ASYNCHRONOUS			Counters	2.54 mm	70 Cel	UP				DUAL		R-PDIP-T14
SN74AS168J4	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				DUAL		R-XDIP-T16
SN74160J	Texas Instruments	DECADE COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	CERAMIC, GLASS-SEALED	NO	1	25000000 Hz	TTL	4	YES		5	5	15 pF	IN-LINE	DIP16,.3	SYNCHRONOUS	29 ns	16 Amp	Counters	2.54 mm	70 Cel	UP		POSITIVE EDGE		DUAL	25 MHz	R-GDIP-T16		5.25 V	5.08 mm	7.62 mm	Not Qualified	4.75 V	101 mA	TCO OUTPUT		NOT SPECIFIED	NOT SPECIFIED	19.56 mm	TTL/H/L
SN74191N-00	Texas Instruments	BINARY COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1		TTL	4	YES		5		15 pF	IN-LINE		SYNCHRONOUS	36 ns			2.54 mm	70 Cel	BIDIRECTIONAL		POSITIVE EDGE		DUAL	20 MHz	R-PDIP-T16		5.25 V	5.08 mm	7.62 mm	Not Qualified	4.75 V	105 mA					19.305 mm	TTL/H/L
SN74LS293N-00	Texas Instruments	BINARY COUNTER	COMMERCIAL	THROUGH-HOLE	14	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	2		TTL	3	YES		5		15 pF	IN-LINE		ASYNCHRONOUS	70 ns			2.54 mm	70 Cel	UP		NEGATIVE EDGE		DUAL	32 MHz	R-PDIP-T14		5.25 V	5.08 mm	7.62 mm	Not Qualified	4.75 V	15 mA	DIVIDE BY 2 AND DIVIDE BY 8 FUNCTIONS				19.305 mm	LS
5962-01-091-0556	Texas Instruments	DECADE COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	CERAMIC	NO	2		TTL		YES					IN-LINE	DIP16,.3	ASYNCHRONOUS		16 Amp	Counters	2.54 mm	70 Cel	UP				DUAL		R-XDIP-T16					Not Qualified		70 mA			NOT SPECIFIED	NOT SPECIFIED
SN74ALS161NP1	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				DUAL		R-PDIP-T16					Not Qualified
SN74AS160N3	Texas Instruments	DECADE COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1		TTL		YES					IN-LINE	DIP16,.3	SYNCHRONOUS			Counters	2.54 mm	70 Cel	UP				DUAL		R-PDIP-T16
SN74F193AN	Texas Instruments	BINARY COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1		TTL	4	YES		5	5	50 pF	IN-LINE	DIP16,.3	SYNCHRONOUS	13 ns		Counters	2.54 mm	70 Cel	BIDIRECTIONAL		POSITIVE EDGE		DUAL	85 MHz	R-PDIP-T16		5.5 V	5.08 mm	7.62 mm	Not Qualified	4.5 V	54 mA	TCO UP AND TCO DOWN OUTPUTS; SEPARATE UP/DOWN CLOCK		NOT SPECIFIED	NOT SPECIFIED	19.305 mm	F/FAST
SN74ALS160N3	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				DUAL		R-PDIP-T16
SN74161NP1	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				DUAL		R-PDIP-T16					Not Qualified
SN74S162NP1	Texas Instruments	DECADE COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1		TTL		YES					IN-LINE	DIP16,.3	SYNCHRONOUS			Counters	2.54 mm	70 Cel	UP				DUAL		R-PDIP-T16					Not Qualified
SN74160N1	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	UP				DUAL		R-PDIP-T16					Not Qualified
SN74ALS561J	Texas Instruments	BINARY COUNTER	COMMERCIAL	THROUGH-HOLE	20	DIP	RECTANGULAR	CERAMIC	NO	1		TTL		YES		5	5		IN-LINE	DIP20,.3	SYNCHRONOUS			Counters	2.54 mm	70 Cel	UP	3-STATE			DUAL		R-XDIP-T20					Not Qualified
SN74AS169ANE4	Texas Instruments	BINARY COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	75000000 Hz	TTL	4	YES	TUBE	5	5	50 pF	IN-LINE	DIP16,.3	SYNCHRONOUS	13 ns	20 Amp	Counters	2.54 mm	70 Cel	BIDIRECTIONAL		POSITIVE EDGE	NICKEL PALLADIUM GOLD	DUAL	75 MHz	R-PDIP-T16		5.5 V	5.08 mm	7.62 mm	Not Qualified	4.5 V	63 mA	TCO OUTPUT	e4			19.305 mm	AS
SN74AS867DW3	Texas Instruments	BINARY COUNTER	COMMERCIAL	GULL WING	24	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	1		TTL		YES					SMALL OUTLINE	SOP24,.4	SYNCHRONOUS			Counters	1.27 mm	70 Cel	BIDIRECTIONAL				DUAL		R-PDSO-G24
SN74LS192JP4	Texas Instruments	DECADE COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	CERAMIC	NO	2		TTL		YES		5	5		IN-LINE	DIP16,.3	SYNCHRONOUS			Counters	2.54 mm	70 Cel	BIDIRECTIONAL				DUAL		R-XDIP-T16
SN74ALS190J	Texas Instruments	DECADE COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	CERAMIC	NO	1		TTL	4	YES		5	5		IN-LINE	DIP16,.3	SYNCHRONOUS			Counters	2.54 mm	70 Cel	BIDIRECTIONAL		POSITIVE EDGE		DUAL		R-XDIP-T16					Not Qualified								ALS
SN74163J	Texas Instruments	BINARY COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	CERAMIC, GLASS-SEALED	NO	1	25000000 Hz	TTL	4	YES		5	5	15 pF	IN-LINE	DIP16,.3	SYNCHRONOUS	29 ns	16 Amp	Counters	2.54 mm	70 Cel	UP		POSITIVE EDGE		DUAL	25 MHz	R-GDIP-T16		5.25 V	5.08 mm	7.62 mm	Not Qualified	4.75 V	101 mA	TCO OUTPUT		NOT SPECIFIED	NOT SPECIFIED	19.56 mm	TTL/H/L
SN74LS162AJP4	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	UP				DUAL		R-XDIP-T16
SN74ALS162AFN-00	Texas Instruments	DECADE COUNTER	COMMERCIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1		TTL	4	YES		5		50 pF	CHIP CARRIER		SYNCHRONOUS	17 ns			1.27 mm	70 Cel	UP		POSITIVE EDGE		QUAD	30 MHz	S-PQCC-J20		5.5 V	4.57 mm	8.9662 mm	Not Qualified	4.5 V	21 mA	TCO OUTPUT				8.9662 mm	ALS
SN74LS191NP1	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	BIDIRECTIONAL				DUAL		R-PDIP-T16					Not Qualified
SN74LS168J	Texas Instruments	DECADE 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	3-STATE			DUAL		R-XDIP-T16					Not Qualified		34 mA			NOT SPECIFIED	NOT SPECIFIED
SN74ALS569J	Texas Instruments	BINARY COUNTER	COMMERCIAL	THROUGH-HOLE	20	DIP	RECTANGULAR	CERAMIC	NO	1		TTL		YES		5	5		IN-LINE	DIP20,.3	SYNCHRONOUS			Counters	2.54 mm	70 Cel	BIDIRECTIONAL	3-STATE			DUAL		R-XDIP-T20					Not Qualified					NOT SPECIFIED	NOT SPECIFIED
SN74LS591JP4	Texas Instruments	BINARY COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	CERAMIC	NO	1		TTL		NO					IN-LINE	DIP16,.3	ASYNCHRONOUS			Counters	2.54 mm	70 Cel	UP	3-STATE			DUAL		R-XDIP-T16										NOT SPECIFIED	NOT SPECIFIED
SN74LS390J-00	Texas Instruments	DECADE COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	CERAMIC, GLASS-SEALED	NO	4		TTL	3	YES		5		15 pF	IN-LINE		ASYNCHRONOUS	60 ns			2.54 mm	70 Cel	UP		NEGATIVE EDGE		DUAL	25 MHz	R-GDIP-T16		5.25 V	5.08 mm	7.62 mm	Not Qualified	4.75 V	26 mA	DIVIDE BY 2 AND DIVIDE BY 5 FUNCTIONS				19.56 mm	LS
SN74LS690N1	Texas Instruments	DECADE COUNTER	COMMERCIAL	THROUGH-HOLE	20	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1		TTL		YES					IN-LINE	DIP20,.3	SYNCHRONOUS			Counters	2.54 mm	70 Cel	UP	3-STATE			DUAL		R-PDIP-T20					Not Qualified					NOT SPECIFIED	NOT SPECIFIED
SN74S197N-00	Texas Instruments	BINARY COUNTER	COMMERCIAL	THROUGH-HOLE	14	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	2		TTL	3	YES		5		15 pF	IN-LINE		ASYNCHRONOUS	43 ns			2.54 mm	70 Cel	UP		NEGATIVE EDGE		DUAL	100 MHz	R-PDIP-T14		5.25 V	5.08 mm	7.62 mm	Not Qualified	4.75 V	120 mA	DIVIDE BY 2 AND DIVIDE BY 8 FUNCTIONS				19.305 mm	S
SN74S169D3	Texas Instruments	BINARY COUNTER	COMMERCIAL	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	1		TTL		YES		5	5		SMALL OUTLINE	SOP16,.25	SYNCHRONOUS			Counters	1.27 mm	70 Cel	BIDIRECTIONAL				DUAL		R-PDSO-G16							160 mA			NOT SPECIFIED	NOT SPECIFIED
SN74L93J-00	Texas Instruments	BINARY COUNTER	COMMERCIAL	THROUGH-HOLE	14	DIP	RECTANGULAR	CERAMIC, GLASS-SEALED	NO	2		TTL	3	YES		5			IN-LINE		ASYNCHRONOUS				2.54 mm	70 Cel	UP		NEGATIVE EDGE		DUAL	3 MHz	R-GDIP-T14		5.25 V	5.08 mm	7.62 mm	Not Qualified	4.75 V	6.6 mA	DIVIDE BY 2 AND DIVIDE BY 8 FUNCTIONS				19.56 mm	TTL/H/L
SN74ALS568J4	Texas Instruments	DECADE COUNTER	COMMERCIAL	THROUGH-HOLE	20	DIP	RECTANGULAR	CERAMIC	NO	1		TTL		YES		5	5		IN-LINE	DIP20,.3	SYNCHRONOUS			Counters	2.54 mm	70 Cel	BIDIRECTIONAL	3-STATE			DUAL		R-XDIP-T20										NOT SPECIFIED	NOT SPECIFIED
SN74AS869DW3	Texas Instruments	BINARY COUNTER	COMMERCIAL	GULL WING	24	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	1		TTL		YES		5	5		SMALL OUTLINE	SOP24,.4	SYNCHRONOUS			Counters	1.27 mm	70 Cel	BIDIRECTIONAL				DUAL		R-PDSO-G24
5962-01-183-8146	Texas Instruments	BINARY COUNTER	COMMERCIAL	THROUGH-HOLE	14	DIP	RECTANGULAR	CERAMIC	NO	1	16000000 Hz	TTL		YES		5	5		IN-LINE	DIP14,.3	ASYNCHRONOUS		8 Amp	Counters	2.54 mm	70 Cel	UP				DUAL		R-XDIP-T14					Not Qualified		15 mA			NOT SPECIFIED	NOT SPECIFIED
SN74ALS569ANE4	Texas Instruments	BINARY COUNTER	COMMERCIAL	THROUGH-HOLE	20	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1		TTL	4		TUBE	5	5	50 pF	IN-LINE	DIP20,.3	SYNCHRONOUS	16 ns	24 Amp	Counters	2.54 mm	70 Cel	BIDIRECTIONAL	3-STATE	POSITIVE EDGE	Nickel/Palladium/Gold (Ni/Pd/Au)	DUAL	30 MHz	R-PDIP-T20		5.5 V	5.08 mm	7.62 mm	Not Qualified	4.5 V	32 mA	TCO OUTPUT; CLOCKED CARRY OUTPUT	e4	NOT SPECIFIED	NOT SPECIFIED	24.325 mm	ALS
SN74LS697NSRG4	Texas Instruments	BINARY COUNTER	COMMERCIAL	GULL WING	20	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	1		TTL	4	YES		5			SMALL OUTLINE	SOP20,.3	SYNCHRONOUS	25 ns		Counters	1.27 mm	70 Cel	BIDIRECTIONAL	3-STATE	POSITIVE EDGE		DUAL	20 MHz	R-PDSO-G20		5.25 V	2 mm	5.3 mm	Not Qualified	4.75 V		REGISTER/COUNTER OUTPUT SELECT; TCO OUTPUT; REGISTERED OUTPUTS		NOT SPECIFIED	NOT SPECIFIED	12.6 mm	LS
SN74ALS169AFN	Texas Instruments	BINARY COUNTER	COMMERCIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1		TTL		YES		5	5		CHIP CARRIER	LDCC20,.4SQ	SYNCHRONOUS			Counters	1.27 mm	70 Cel	BIDIRECTIONAL				QUAD		S-PQCC-J20					Not Qualified
SN74LS490J-00	Texas Instruments	DECADE COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	CERAMIC, GLASS-SEALED	NO	2		TTL	4	YES		5		15 pF	IN-LINE		ASYNCHRONOUS	54 ns			2.54 mm	70 Cel	UP		NEGATIVE EDGE		DUAL	35 MHz	R-GDIP-T16		5.25 V	5.08 mm	7.62 mm	Not Qualified	4.75 V	26 mA					19.56 mm	LS
SN74ALS192J4	Texas Instruments	DECADE COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	CERAMIC	NO	2		TTL		YES		5	5		IN-LINE	DIP16,.3	SYNCHRONOUS			Counters	2.54 mm	70 Cel	BIDIRECTIONAL				DUAL		R-XDIP-T16
SN74190N3	Texas Instruments	DECADE COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	20000000 Hz	TTL		YES		5	5	15 pF	IN-LINE	DIP16,.3	SYNCHRONOUS		16 Amp	Counters	2.54 mm	70 Cel	BIDIRECTIONAL				DUAL		R-PDIP-T16							105 mA
SN74LS390NSRG4	Texas Instruments	DECADE COUNTER	COMMERCIAL	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	2	25000000 Hz	TTL	3	NO	TR	5	5		SMALL OUTLINE	SOP16,.3	ASYNCHRONOUS	60 ns	8 Amp	Counters	1.27 mm	70 Cel	UP		NEGATIVE EDGE	NICKEL PALLADIUM GOLD	DUAL	25 MHz	R-PDSO-G16	1	5.25 V	2 mm	5.3 mm	Not Qualified	4.75 V	26 mA	DIVIDE BY 2 AND DIVIDE BY 5 FUNCTIONS	e4	30	260	10.2 mm	LS
SN74AS161J	Texas Instruments	BINARY COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	CERAMIC	NO	1	75000000 Hz	TTL		YES		5	5		IN-LINE	DIP16,.3	SYNCHRONOUS		20 Amp	Counters	2.54 mm	70 Cel	UP				DUAL		R-XDIP-T16					Not Qualified		53 mA
SN74ALS869DWRE4	Texas Instruments	BINARY COUNTER	COMMERCIAL	GULL WING	24	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	1		TTL	8	YES	TR	5		50 pF	SMALL OUTLINE	SOP24,.4	SYNCHRONOUS	16 ns	8 Amp	Counters	1.27 mm	70 Cel	BIDIRECTIONAL		POSITIVE EDGE		DUAL	35 MHz	R-PDSO-G24		5.5 V	2.65 mm	7.5 mm	Not Qualified	4.5 V	45 mA	TCO OUTPUT; COUNT ENABLE INPUTS		NOT SPECIFIED	NOT SPECIFIED	15.4 mm	ALS
SN74F163ADRE4	Texas Instruments	BINARY COUNTER	COMMERCIAL	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	1	90000000 Hz	TTL	4	YES	TR	5	5	50 pF	SMALL OUTLINE	SOP16,.25	SYNCHRONOUS	11 ns	20 Amp	Counters	1.27 mm	70 Cel	UP		POSITIVE EDGE	NICKEL PALLADIUM GOLD	DUAL	90 MHz	R-PDSO-G16	1	5.5 V	1.75 mm	3.9 mm	Not Qualified	4.5 V	55 mA	TCO OUTPUT	e4	30	260	9.9 mm	F/FAST
SN74ALS161BDG4	Texas Instruments	BINARY COUNTER	COMMERCIAL	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	1	40000000 Hz	TTL	4	YES	TUBE	5	5		SMALL OUTLINE	SOP16,.25	SYNCHRONOUS	20 ns	8 Amp	Counters	1.27 mm	70 Cel	UP		POSITIVE EDGE	NICKEL PALLADIUM GOLD	DUAL	40 MHz	R-PDSO-G16	1	5.5 V	1.75 mm	3.9 mm	Not Qualified	4.5 V	21 mA	TCO OUTPUT	e4	30	260	9.9 mm	ALS
SN74ALS560ANP3	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			DUAL		R-PDIP-T20
SN74F161ADRE4	Texas Instruments	BINARY COUNTER	COMMERCIAL	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	1	90000000 Hz	TTL	4	YES	TR	5	5	50 pF	SMALL OUTLINE	SOP16,.25	SYNCHRONOUS	11 ns	20 Amp	Counters	1.27 mm	70 Cel	UP		POSITIVE EDGE	NICKEL PALLADIUM GOLD	DUAL	90 MHz	R-PDSO-G16	1	5.5 V	1.75 mm	3.9 mm	Not Qualified	4.5 V	55 mA	TCO OUTPUT	e4	30	260	9.9 mm	F/FAST
SN74LS68DR	Texas Instruments	DECADE COUNTER	COMMERCIAL	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	3		TTL	4	YES		5		30 pF	SMALL OUTLINE		ASYNCHRONOUS	40 ns			1.27 mm	70 Cel	UP		NEGATIVE EDGE		DUAL	20 MHz	R-PDSO-G16		5.25 V	1.75 mm	3.9 mm	Not Qualified	4.75 V	54 mA	DIVIDE BY 2, DIVIDE BY 5 AND DIVIDE BY 10 FUNCTIONS				9.9 mm	LS

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.