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
5962-9055301EA	Texas Instruments	BINARY COUNTER	MILITARY	THROUGH-HOLE	16	DIP	RECTANGULAR	CERAMIC, GLASS-SEALED	NO	1	10000000 Hz	CMOS	MIL-STD-883	8		TUBE	4.5	2/6	50 pF	IN-LINE	DIP16,.3	SYNCHRONOUS	450 ns	5.2 Amp	Counter	2.54 mm	125 Cel	DOWN		POSITIVE EDGE	-55 Cel	TIN LEAD	DUAL	12 MHz	R-GDIP-T16	6 V	5.08 mm	7.62 mm	Qualified	2 V	.08 mA	TCO OUTPUT; RESET TO MAX COUNT	e0			19.56 mm	HC
SN74AS869JTP4	Texas Instruments	BINARY COUNTER	COMMERCIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	CERAMIC	NO	1		TTL			YES		5	5		IN-LINE	DIP24,.3	SYNCHRONOUS			Counters	2.54 mm	70 Cel	BIDIRECTIONAL			0 Cel		DUAL		R-XDIP-T24
SN74S197JP4	Texas Instruments	BINARY COUNTER	COMMERCIAL	THROUGH-HOLE	14	DIP	RECTANGULAR	CERAMIC	NO	1		TTL			YES					IN-LINE	DIP14,.3	ASYNCHRONOUS			Counters	2.54 mm	70 Cel	UP			0 Cel		DUAL		R-XDIP-T14
SN74AS163NP3	Texas Instruments	BINARY COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	75000000 Hz	TTL			YES		5	5		IN-LINE	DIP16,.3	SYNCHRONOUS		20 Amp	Counters	2.54 mm	70 Cel	UP			0 Cel		DUAL		R-PDIP-T16						53 mA
SN74HC4060J	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				Not Qualified
5962-01-092-6317	Texas Instruments	BINARY 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 Qualified					NOT SPECIFIED	NOT SPECIFIED
SN74HC191NE4	Texas Instruments	BINARY COUNTER	INDUSTRIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	17000000 Hz	CMOS		4		TUBE	5	2/6	50 pF	IN-LINE	DIP16,.3	SYNCHRONOUS	240 ns	5.2 Amp	Counters	2.54 mm	85 Cel	BIDIRECTIONAL		POSITIVE EDGE	-40 Cel	Nickel/Palladium/Gold (Ni/Pd/Au)	DUAL	19 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
SN74HC160NP3	Texas Instruments	DECADE COUNTER	INDUSTRIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1		CMOS			YES			2/6		IN-LINE	DIP16,.3	SYNCHRONOUS			Counters	2.54 mm	85 Cel	UP			-40 Cel		DUAL		R-PDIP-T16
SN74ALS561N3	Texas Instruments	BINARY 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
SN54390J	Texas Instruments	DECADE COUNTER	MILITARY	THROUGH-HOLE	16	DIP	RECTANGULAR	CERAMIC, GLASS-SEALED	NO	4	25000000 Hz	TTL		3	NO		5		15 pF	IN-LINE	DIP16,.3	ASYNCHRONOUS	39 ns	16 Amp	Counters	2.54 mm	125 Cel	UP		NEGATIVE EDGE	-55 Cel		DUAL	20 MHz	R-GDIP-T16	5.5 V	5.08 mm	7.62 mm	Not Qualified	4.5 V	69 mA	DIVIDE BY 2 AND DIVIDE BY 5 FUNCTIONS		NOT SPECIFIED	NOT SPECIFIED	19.56 mm	TTL/H/L
SN54ALS168J	Texas Instruments	DECADE COUNTER	MILITARY	THROUGH-HOLE	16	DIP	RECTANGULAR	CERAMIC	NO	1		TTL			YES		5	5		IN-LINE	DIP16,.3	SYNCHRONOUS			Counters	2.54 mm	125 Cel	BIDIRECTIONAL			-55 Cel		DUAL		R-XDIP-T16				Not Qualified
5962-01-266-4638	Texas Instruments	DECADE COUNTER	MILITARY	THROUGH-HOLE	16	DIP	RECTANGULAR	CERAMIC	NO	1		CMOS	38535Q/M;38534H;883B		YES			2/6	50 pF	IN-LINE	DIP16,.3	SYNCHRONOUS		4 Amp	Counters	2.54 mm	125 Cel	UP			-55 Cel		DUAL		R-XDIP-T16				Not Qualified
SN74LS169BNP3	Texas Instruments	BINARY COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	20000000 Hz	TTL			YES		5	5		IN-LINE	DIP16,.3	SYNCHRONOUS		24 Amp	Counters	2.54 mm	70 Cel	BIDIRECTIONAL			0 Cel		DUAL		R-PDIP-T16									NOT SPECIFIED	NOT SPECIFIED
CD74HC191EE4	Texas Instruments	BINARY 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
SN74LS390NP3	Texas Instruments		COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	2		TTL			NO		5	5		IN-LINE	DIP16,.3	ASYNCHRONOUS			Counters	2.54 mm	70 Cel	UP			0 Cel		DUAL		R-PDIP-T16
SN74LS290NP1	Texas Instruments	DECADE 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			0 Cel		DUAL		R-PDIP-T14				Not Qualified
SN74S169N	Texas Instruments	BINARY COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	40000000 Hz	TTL		4	YES		5	5	15 pF	IN-LINE	DIP16,.3	SYNCHRONOUS	15 ns	20 Amp	Counters	2.54 mm	70 Cel	BIDIRECTIONAL		POSITIVE EDGE	0 Cel		DUAL	40 MHz	R-PDIP-T16	5.25 V	5.08 mm	7.62 mm	Not Qualified	4.75 V	160 mA	TCO OUTPUT		NOT SPECIFIED	NOT SPECIFIED	19.305 mm	S
SN74HC592NP1	Texas Instruments	BINARY COUNTER	INDUSTRIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1		CMOS			NO		5	5		IN-LINE	DIP16,.3	SYNCHRONOUS			Counters	2.54 mm	85 Cel	UP	3-STATE		-40 Cel		DUAL		R-PDIP-T16				Not Qualified					NOT SPECIFIED	NOT SPECIFIED
SN74LS290N-00	Texas Instruments	DECADE COUNTER	COMMERCIAL	THROUGH-HOLE	14	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	2		TTL		3	YES		5		15 pF	IN-LINE		ASYNCHRONOUS	50 ns			2.54 mm	70 Cel	UP		NEGATIVE EDGE	0 Cel		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 5 FUNCTIONS				19.305 mm	LS
SN74ALS869NT3	Texas Instruments	BINARY COUNTER	COMMERCIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1		TTL			YES					IN-LINE	DIP24,.6	SYNCHRONOUS		8 Amp	Counters	2.54 mm	70 Cel	BIDIRECTIONAL			0 Cel		DUAL		R-PDIP-T24
SN74LS92J4	Texas Instruments	DIVIDE BY 12 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
SN54ALS569J	Texas Instruments	BINARY COUNTER	MILITARY	THROUGH-HOLE	20	DIP	RECTANGULAR	CERAMIC	NO	1		TTL			YES		5	5		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
SN74LS161AN3	Texas Instruments	BINARY COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1		TTL		4	YES		5	5		IN-LINE	DIP16,.3	SYNCHRONOUS	35 ns		Counters	2.54 mm	70 Cel	UP		POSITIVE EDGE	0 Cel		DUAL	25 MHz	R-PDIP-T16	5.25 V	5.08 mm	7.62 mm	Not Qualified	4.75 V				NOT SPECIFIED	NOT SPECIFIED	19.305 mm	LS
SN74LS191NP3	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			0 Cel		DUAL		R-PDIP-T16
SN7492AJP4	Texas Instruments	DIVIDE BY 12 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
SN54ALS169J	Texas Instruments	BINARY COUNTER	MILITARY	THROUGH-HOLE	16	DIP	RECTANGULAR	CERAMIC	NO	1		TTL			YES		5	5		IN-LINE	DIP16,.3	SYNCHRONOUS			Counters	2.54 mm	125 Cel	BIDIRECTIONAL			-55 Cel		DUAL		R-XDIP-T16				Not Qualified
SN54191J-00	Texas Instruments	BINARY COUNTER	MILITARY	THROUGH-HOLE	16	DIP	RECTANGULAR	CERAMIC, GLASS-SEALED	NO	1		TTL		4	YES		5		15 pF	IN-LINE		SYNCHRONOUS	36 ns			2.54 mm	125 Cel	BIDIRECTIONAL		POSITIVE EDGE	-55 Cel		DUAL	20 MHz	R-GDIP-T16	5.5 V	5.08 mm	7.62 mm	Not Qualified	4.5 V	99 mA					19.56 mm	TTL/H/L
SN74LS169BNE4	Texas Instruments	BINARY COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	20000000 Hz	TTL		4		TUBE	5	5	45 pF	IN-LINE	DIP16,.3	SYNCHRONOUS	25 ns	24 Amp	Counters	2.54 mm	70 Cel	BIDIRECTIONAL		POSITIVE EDGE	0 Cel	Nickel/Palladium/Gold (Ni/Pd/Au)	DUAL	20 MHz	R-PDIP-T16	5.25 V	5.08 mm	7.62 mm	Not Qualified	4.75 V	45 mA	TCO OUTPUT	e4	NOT SPECIFIED	NOT SPECIFIED	19.305 mm	LS
SN74160NP1	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			0 Cel		DUAL		R-PDIP-T16				Not Qualified
SN74ALS561AN	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	18 ns	24 Amp	Counters	2.54 mm	70 Cel	UP	3-STATE	POSITIVE EDGE	0 Cel	NICKEL PALLADIUM GOLD	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	e4			24.325 mm	ALS
SN74HC4060N1	Texas Instruments	BINARY COUNTER	INDUSTRIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1		CMOS			NO			2/6		IN-LINE	DIP16,.3	ASYNCHRONOUS			Counters	2.54 mm	85 Cel	UP			-40 Cel		DUAL		R-PDIP-T16				Not Qualified
SN74HC193NP3	Texas Instruments	BINARY COUNTER	INDUSTRIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1		CMOS			YES			2/6		IN-LINE	DIP16,.3	SYNCHRONOUS			Counters	2.54 mm	85 Cel	BIDIRECTIONAL			-40 Cel		DUAL		R-PDIP-T16
SN74LS193NP1	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			0 Cel		DUAL		R-PDIP-T16				Not Qualified
SN74LS490N	Texas Instruments	DECADE COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	2	25000000 Hz	TTL		4	YES		5	5	15 pF	IN-LINE	DIP16,.3	ASYNCHRONOUS	54 ns	8 Amp	Counters	2.54 mm	70 Cel	UP		NEGATIVE EDGE	0 Cel		DUAL	25 MHz	R-PDIP-T16	5.25 V	5.08 mm	7.62 mm	Not Qualified	4.75 V	26 mA			NOT SPECIFIED	NOT SPECIFIED	19.305 mm	LS
SN74144J-00	Texas Instruments	DISPLAY DRIVER COUNTER	COMMERCIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	CERAMIC, GLASS-SEALED	NO	1		TTL		4	YES		5		15 pF	IN-LINE		SYNCHRONOUS	60 ns			2.54 mm	70 Cel	UP	OPEN-COLLECTOR	POSITIVE EDGE	0 Cel		DUAL	12 MHz	R-GDIP-T24	5.25 V	5.715 mm	15.24 mm	Not Qualified	4.75 V	93 mA					32.05 mm	TTL/H/L
SN74ALS560AN1	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
SN74AS162N1	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			0 Cel		DUAL		R-PDIP-T16				Not Qualified
SN74LS192J-00	Texas Instruments	DECADE COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	CERAMIC, GLASS-SEALED	NO	1		TTL		4	YES		5		15 pF	IN-LINE		SYNCHRONOUS	47 ns			2.54 mm	70 Cel	BIDIRECTIONAL		POSITIVE EDGE	0 Cel		DUAL	25 MHz	R-GDIP-T16	5.25 V	5.08 mm	7.62 mm	Not Qualified	4.75 V	34 mA					19.56 mm	LS
SN74HC393NP3	Texas Instruments	BINARY COUNTER	INDUSTRIAL	THROUGH-HOLE	14	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	2		CMOS			NO			2/6		IN-LINE	DIP14,.3	ASYNCHRONOUS			Counters	2.54 mm	85 Cel	UP			-40 Cel		DUAL		R-PDIP-T14
SN74ALS561J4	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		0 Cel		DUAL		R-XDIP-T20
SN74177NP3	Texas Instruments	BINARY COUNTER	COMMERCIAL	THROUGH-HOLE	14	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1		TTL			YES		5	5		IN-LINE	DIP14,.3	ASYNCHRONOUS			Counters	2.54 mm	70 Cel	UP			0 Cel		DUAL		R-PDIP-T14
5962-01-329-5757	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	3-STATE		0 Cel		DUAL		R-XDIP-T16				Not Qualified					NOT SPECIFIED	NOT SPECIFIED
SN74LS693NP1	Texas Instruments	BINARY 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		0 Cel		DUAL		R-PDIP-T20				Not Qualified					NOT SPECIFIED	NOT SPECIFIED
5962-8977101EX	Texas Instruments	BINARY COUNTER	MILITARY	THROUGH-HOLE	16	DIP	RECTANGULAR	CERAMIC, GLASS-SEALED	NO	1	30000000 Hz	CMOS	MIL-STD-883	14	YES		5		50 pF	IN-LINE		ASYNCHRONOUS	100 ns			2.54 mm	125 Cel	UP		NEGATIVE EDGE	-55 Cel		DUAL	20 MHz	R-GDIP-T16	5.5 V	5.08 mm	7.62 mm	Qualified	4.5 V				NOT SPECIFIED	NOT SPECIFIED	19.56 mm	HCT
SN74HC4040N1	Texas Instruments	BINARY COUNTER	INDUSTRIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1		CMOS			NO			2/6		IN-LINE	DIP16,.3	ASYNCHRONOUS			Counters	2.54 mm	85 Cel	UP			-40 Cel		DUAL		R-PDIP-T16				Not Qualified
SN74LS669NP1	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			0 Cel		DUAL		R-PDIP-T16				Not Qualified					NOT SPECIFIED	NOT SPECIFIED
SN74LS197J4	Texas Instruments	BINARY COUNTER	COMMERCIAL	THROUGH-HOLE	14	DIP	RECTANGULAR	CERAMIC	NO	1		TTL			YES		5	5		IN-LINE	DIP14,.3	ASYNCHRONOUS			Counters	2.54 mm	70 Cel	UP			0 Cel		DUAL		R-XDIP-T14
SN74ALS192N3	Texas Instruments	DECADE COUNTER	COMMERCIAL	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	2		TTL			YES		5	5		IN-LINE	DIP16,.3	SYNCHRONOUS			Counters	2.54 mm	70 Cel	BIDIRECTIONAL			0 Cel		DUAL		R-PDIP-T16

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.