DFP Digital Counters 983

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Part	Manufacturer	Logic IC Type	Temperature Grade	Terminal Form	No. of Terminals	Package Code	Package Shape	Total Dose (V)	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)	JESD-609 Code	Maximum Time At Peak Reflow Temperature (s)	Peak Reflow Temperature (C)	Length	Family
8407501XC	STMicroelectronics	BINARY COUNTER	MILITARY	FLAT	16	DFP	RECTANGULAR		CERAMIC	YES	1	21000000 Hz	CMOS	38535Q/M;38534H;883B		YES			2/6	50 pF	FLATPACK	FL16,.3	SYNCHRONOUS		4 Amp	Counters	1.27 mm	125 Cel	UP			-55 Cel		DUAL		R-XDFP-F16				Not Qualified
RHFACT191K03V	STMicroelectronics	BINARY COUNTER		FLAT	16	DFP	RECTANGULAR	300k Rad(Si)	CERAMIC, METAL-SEALED COFIRED	YES	1		CMOS	MIL-PRF-38535 Class V	4	NO		5			FLATPACK	FL16,.3	SYNCHRONOUS				1.27 mm	150 Cel	BIDIRECTIONAL			-55 Cel		DUAL		R-CDFP-F16	5.5 V	2.38 mm	6.91 mm		4.5 V				9.94 mm	ACT
8500401XX	STMicroelectronics	BINARY COUNTER	MILITARY	FLAT	16	DFP	RECTANGULAR		CERAMIC, METAL-SEALED COFIRED	YES	1		CMOS		12	YES		4.5			FLATPACK		ASYNCHRONOUS	225 ns				125 Cel	UP		NEGATIVE EDGE	-55 Cel		DUAL	22 MHz	R-CDFP-F16	6 V			Not Qualified	2 V					HC/UH
HCC4017BKT	STMicroelectronics	DECADE COUNTER		FLAT	16	DFP	RECTANGULAR	100k Rad(Si)	CERAMIC, METAL-SEALED COFIRED	YES	1		CMOS		4	NO		10			FLATPACK	FL16,.3					1.27 mm	125 Cel	UP			-55 Cel		DUAL		R-CDFP-F16	20 V	2.38 mm	6.91 mm		3 V				9.94 mm	HC
M54HC590K	STMicroelectronics	BINARY COUNTER	MILITARY	FLAT	16	DFP	RECTANGULAR	50k Rad(Si)	CERAMIC, METAL-SEALED COFIRED	YES	1	22000000 Hz	CMOS	ESCC9000	8	NO		4.5	2/6	50 pF	FLATPACK	FL16,.3	ASYNCHRONOUS	250 ns	6 Amp	Counters	1.27 mm	125 Cel	UP	3-STATE	POSITIVE EDGE	-55 Cel	TIN LEAD	DUAL	26 MHz	R-CDFP-F16	6 V	2.38 mm	6.91 mm	Not Qualified	2 V	e0			9.94 mm	HC/UH
HCC4520BK	STMicroelectronics	BINARY COUNTER	MILITARY	FLAT	16	DFP	RECTANGULAR	100k Rad(Si)	CERAMIC	YES	2		CMOS	ESCC9000		NO			5/15		FLATPACK	FL16,.3	SYNCHRONOUS			Counters	1.27 mm	125 Cel	UP			-55 Cel		DUAL		R-XDFP-F16				Not Qualified
M54HC163K1	STMicroelectronics	BINARY COUNTER	MILITARY	FLAT	16	DFP	RECTANGULAR	50k Rad(Si)	CERAMIC, METAL-SEALED COFIRED	YES	1	21000000 Hz	CMOS		4	YES		4.5	2/6	50 pF	FLATPACK	FL16,.3	SYNCHRONOUS	190 ns	4 Amp	Counters	1.27 mm	125 Cel	UP		POSITIVE EDGE	-55 Cel	TIN LEAD	DUAL	25 MHz	R-CDFP-F16	6 V	2.38 mm	6.91 mm	Not Qualified	2 V	e0			9.94 mm	HC/UH
HCC4033BK	STMicroelectronics	DISPLAY DRIVER COUNTER	MILITARY	FLAT	16	DFP	RECTANGULAR		CERAMIC	YES			CMOS			YES			3/18		FLATPACK	FL16,.3				Counters	1.27 mm	125 Cel				-55 Cel		DUAL		R-XDFP-F16				Not Qualified
M54HC163K	STMicroelectronics	BINARY COUNTER	MILITARY	FLAT	16	DFP	RECTANGULAR	50k Rad(Si)	CERAMIC, METAL-SEALED COFIRED	YES	1	21000000 Hz	CMOS	ESCC9000	4	YES		4.5	2/6	50 pF	FLATPACK	FL16,.3	SYNCHRONOUS	190 ns	4 Amp	Counters	1.27 mm	125 Cel	UP		POSITIVE EDGE	-55 Cel	TIN LEAD	DUAL	25 MHz	R-CDFP-F16	6 V	2.38 mm	6.91 mm	Not Qualified	2 V	e0			9.94 mm	HC/UH
RHFACT161K01V	STMicroelectronics	BINARY COUNTER		FLAT	16	DFP	RECTANGULAR	300k Rad(Si)	CERAMIC, METAL-SEALED COFIRED	YES	1		CMOS	MIL-PRF-38535 Class V	4	NO		5			FLATPACK	FL16,.3	SYNCHRONOUS				1.27 mm	150 Cel	UP			-55 Cel		DUAL		R-CDFP-F16	5.5 V	2.38 mm	6.91 mm		4.5 V				9.94 mm	ACT
HCC4516BKG	STMicroelectronics	BINARY COUNTER		FLAT	16	DFP	RECTANGULAR	100k Rad(Si)	CERAMIC, METAL-SEALED COFIRED	YES	1		CMOS		4	YES		10			FLATPACK	FL16,.3					1.27 mm	125 Cel	BIDIRECTIONAL			-55 Cel		DUAL		R-CDFP-F16	20 V	2.38 mm	6.91 mm		3 V				9.94 mm	HC
M54HC161KG	STMicroelectronics	BINARY COUNTER		FLAT	16	DFP	RECTANGULAR		CERAMIC, METAL-SEALED COFIRED	YES	2		CMOS			NO					FLATPACK		SYNCHRONOUS					125 Cel	UP			-55 Cel		DUAL		R-CDFP-F16	6 V				2 V					HC
RHFACT161K03V	STMicroelectronics	BINARY COUNTER		FLAT	16	DFP	RECTANGULAR	300k Rad(Si)	CERAMIC, METAL-SEALED COFIRED	YES	1		CMOS	MIL-PRF-38535 Class V	4	NO		5			FLATPACK	FL16,.3	SYNCHRONOUS				1.27 mm	150 Cel	UP			-55 Cel		DUAL		R-CDFP-F16	5.5 V	2.38 mm	6.91 mm		4.5 V				9.94 mm	ACT
HCC40103BKT	STMicroelectronics	BINARY COUNTER	MILITARY	FLAT	16	DFP	RECTANGULAR	100k Rad(Si)	CERAMIC, METAL-SEALED COFIRED	YES	1		CMOS		8	YES	TR	5			FLATPACK		SYNCHRONOUS	600 ns			1.27 mm	125 Cel	DOWN		POSITIVE EDGE	-55 Cel		DUAL	1.4 MHz	R-CDFP-F16	20 V	2.38 mm	6.91 mm		3 V		NOT SPECIFIED	NOT SPECIFIED	9.94 mm	4000/14000/40000
HCC40161BKG	STMicroelectronics	BINARY COUNTER		FLAT	16	DFP	RECTANGULAR	100k Rad(Si)	CERAMIC, METAL-SEALED COFIRED	YES	1		CMOS			NO		10			FLATPACK	FL16,.3	ASYNCHRONOUS				1.27 mm	125 Cel	UP			-55 Cel		DUAL		R-CDFP-F16	20 V	2.38 mm	6.91 mm		3 V				9.94 mm	HC
RHFACT161K1	STMicroelectronics	BINARY COUNTER		FLAT	16	DFP	RECTANGULAR	300k Rad(Si)	CERAMIC, METAL-SEALED COFIRED	YES	1		CMOS		4	NO		5			FLATPACK	FL16,.3	SYNCHRONOUS				1.27 mm	150 Cel	UP			-55 Cel		DUAL		R-CDFP-F16	5.5 V	2.38 mm	6.91 mm		4.5 V				9.94 mm	ACT
HCC4060BKT	STMicroelectronics	BINARY COUNTER		FLAT	16	DFP	RECTANGULAR	100k Rad(Si)	CERAMIC, METAL-SEALED COFIRED	YES	1		CMOS		4	NO		10			FLATPACK	FL16,.3					1.27 mm	125 Cel	UP			-55 Cel		DUAL		R-CDFP-F16	20 V	2.38 mm	6.91 mm		3 V				9.94 mm	HC
8500401XA	STMicroelectronics	BINARY COUNTER	MILITARY	FLAT	16	DFP	RECTANGULAR		CERAMIC, METAL-SEALED COFIRED	YES	1	19000000 Hz	CMOS	MIL-PRF-38535	12	NO		4.5	2/6	50 pF	FLATPACK	FL16,.3	ASYNCHRONOUS	225 ns	4 Amp	Counters	1.27 mm	125 Cel	UP		NEGATIVE EDGE	-55 Cel		DUAL	22 MHz	R-CDFP-F16	6 V			Not Qualified	2 V					HC/UH
HCC4516BKT	STMicroelectronics	BINARY COUNTER		FLAT	16	DFP	RECTANGULAR	100k Rad(Si)	CERAMIC, METAL-SEALED COFIRED	YES	1		CMOS		4	YES		10			FLATPACK	FL16,.3					1.27 mm	125 Cel	BIDIRECTIONAL			-55 Cel		DUAL		R-CDFP-F16	20 V	2.38 mm	6.91 mm		3 V				9.94 mm	HC
M54HC161KT	STMicroelectronics	BINARY COUNTER		FLAT	16	DFP	RECTANGULAR		CERAMIC, METAL-SEALED COFIRED	YES	2		CMOS			NO					FLATPACK		SYNCHRONOUS					125 Cel	UP			-55 Cel		DUAL		R-CDFP-F16	6 V				2 V					HC
M54HC4040KT	STMicroelectronics	BINARY COUNTER		FLAT	16	DFP	RECTANGULAR		CERAMIC, METAL-SEALED COFIRED	YES	2		CMOS		12	NO					FLATPACK							125 Cel	UP			-55 Cel		DUAL		R-CDFP-F16	6 V				2 V					HC
M54HC160K1	STMicroelectronics	DECADE COUNTER	MILITARY	FLAT	16	DFP	RECTANGULAR	50k Rad(Si)	CERAMIC, METAL-SEALED COFIRED	YES	1	21000000 Hz	CMOS		4		TR	4.5	2/6	50 pF	FLATPACK	FL16,.3	SYNCHRONOUS	190 ns	4 Amp	Counters	1.27 mm	125 Cel	UP		POSITIVE EDGE	-55 Cel	TIN LEAD	DUAL	25 MHz	R-CDFP-F16	6 V	2.38 mm	6.91 mm	Not Qualified	2 V	e0			9.94 mm	HC/UH
RHFACT191K02V	STMicroelectronics	BINARY COUNTER	MILITARY	FLAT	16	DFP	RECTANGULAR	300k Rad(Si)	CERAMIC	YES	1		CMOS	38535V;38534K;883S		YES	TR	5	5		FLATPACK	FL16,.3	SYNCHRONOUS			Counters	1.27 mm	125 Cel	BIDIRECTIONAL			-55 Cel		DUAL		R-XDFP-F16				Not Qualified
M54HC4040K	STMicroelectronics	BINARY COUNTER	MILITARY	FLAT	16	DFP	RECTANGULAR	50k Rad(Si)	CERAMIC, METAL-SEALED COFIRED	YES	1	4000000 Hz	CMOS		12	NO		4.5	2/6	50 pF	FLATPACK	FL14,.3	ASYNCHRONOUS	220 ns	4 Amp	Counters	1.27 mm	125 Cel	UP		NEGATIVE EDGE	-55 Cel	TIN LEAD	DUAL	24 MHz	R-CDFP-F16	6 V	2.38 mm	6.91 mm	Not Qualified	2 V	e0			9.94 mm	HC/UH
RHFAC191K04V	STMicroelectronics	BINARY COUNTER	MILITARY	FLAT	14	DFP	RECTANGULAR	300k Rad(Si)	CERAMIC, METAL-SEALED COFIRED	YES	1		CMOS	MIL-PRF-38535 Class V	4	YES		3			FLATPACK	FL14,.25	SYNCHRONOUS				1.27 mm	150 Cel	BIDIRECTIONAL			-55 Cel		DUAL		R-CDFP-F14	6 V	2.72 mm	6.345 mm		2 V				9.5 mm	AC
M54HC4060K	STMicroelectronics	BINARY COUNTER	MILITARY	FLAT	16	DFP	RECTANGULAR	50k Rad(Si)	CERAMIC, METAL-SEALED COFIRED	YES	1	20000000 Hz	CMOS	ESCC9000	14	NO		4.5	2/6	50 pF	FLATPACK	FL16,.3	ASYNCHRONOUS	450 ns	4 Amp	Counters	1.27 mm	125 Cel	UP		NEGATIVE EDGE	-55 Cel	TIN LEAD	DUAL	24 MHz	R-CDFP-F16	6 V	2.38 mm	6.91 mm	Not Qualified	2 V	e0			9.94 mm	HC/UH
HCC4018BKG	STMicroelectronics	DIVIDE BY N COUNTER		FLAT	16	DFP	RECTANGULAR	100k Rad(Si)	CERAMIC, METAL-SEALED COFIRED	YES	1		CMOS		4	YES		10			FLATPACK	FL16,.3					1.27 mm	125 Cel	UP			-55 Cel		DUAL		R-CDFP-F16	20 V	2.38 mm	6.91 mm		3 V				9.94 mm	HC
RHFACT161K04V	STMicroelectronics	BINARY COUNTER		FLAT	16	DFP	RECTANGULAR	300k Rad(Si)	CERAMIC, METAL-SEALED COFIRED	YES	1		CMOS	MIL-PRF-38535 Class V	4	NO		5			FLATPACK	FL16,.3	SYNCHRONOUS				1.27 mm	150 Cel	UP			-55 Cel		DUAL		R-CDFP-F16	5.5 V	2.38 mm	6.91 mm		4.5 V				9.94 mm	ACT
RHFACT191K01V	STMicroelectronics	BINARY COUNTER	MILITARY	FLAT	16	DFP	RECTANGULAR	300k Rad(Si)	CERAMIC	YES	1		CMOS	38535V;38534K;883S		YES	TR	5	5		FLATPACK	FL16,.3	SYNCHRONOUS			Counters	1.27 mm	125 Cel	BIDIRECTIONAL			-55 Cel		DUAL		R-XDFP-F16				Not Qualified
HCC4020BK	STMicroelectronics	BINARY COUNTER	MILITARY	FLAT	16	DFP	RECTANGULAR	100k Rad(Si)	CERAMIC	YES	1		CMOS	ESCC9000		NO			5/15		FLATPACK	FL16,.3	ASYNCHRONOUS			Counters	1.27 mm	125 Cel	UP			-55 Cel		DUAL		R-XDFP-F16				Not Qualified
HCC4022BKT	STMicroelectronics	RING COUNTER		FLAT	16	DFP	RECTANGULAR	100k Rad(Si)	CERAMIC, METAL-SEALED COFIRED	YES			CMOS					5			FLATPACK	FL16,.3					1.27 mm	125 Cel	UP			-55 Cel		DUAL		R-CDFP-F16	15 V	2.38 mm	6.91 mm		3 V		NOT SPECIFIED	NOT SPECIFIED	9.94 mm	HC
HCC4022BK	STMicroelectronics	DIVIDE BY 8 COUNTER	MILITARY	FLAT	16	DFP	RECTANGULAR	100k Rad(Si)	CERAMIC	YES	1		CMOS	ESCC9000		NO			5/15		FLATPACK	FL16,.3	SYNCHRONOUS			Counters	1.27 mm	125 Cel	UP			-55 Cel		DUAL		R-XDFP-F16				Not Qualified
RHFAC191K01V	STMicroelectronics	BINARY COUNTER	MILITARY	FLAT	16	DFP	RECTANGULAR	300k Rad(Si)	CERAMIC	YES	1		CMOS	38535V;38534K;883S		YES	TR		3.3/5		FLATPACK	FL16,.3	SYNCHRONOUS			Counters	1.27 mm	125 Cel	BIDIRECTIONAL			-55 Cel		DUAL		R-XDFP-F16				Not Qualified
M54HC193K1	STMicroelectronics	BINARY COUNTER	MILITARY	FLAT	16	DFP	RECTANGULAR	50k Rad(Si)	CERAMIC, METAL-SEALED COFIRED	YES	1	17000000 Hz	CMOS		4		TR	4.5	2/6		FLATPACK	FL16,.3	SYNCHRONOUS	285 ns	4 Amp	Counters	1.27 mm	125 Cel	BIDIRECTIONAL		POSITIVE EDGE	-55 Cel	TIN LEAD	DUAL	20 MHz	R-CDFP-F16	6 V	2.38 mm	6.91 mm	Not Qualified	2 V	e0			9.94 mm	HC/UH
M54HC393KG	STMicroelectronics	BINARY COUNTER		FLAT	16	DFP	RECTANGULAR		CERAMIC, METAL-SEALED COFIRED	YES	2		CMOS			NO					FLATPACK							125 Cel	UP			-55 Cel		DUAL		R-CDFP-F16	6 V				2 V					HC
M54HC4020KG	STMicroelectronics	BINARY COUNTER		FLAT	16	DFP	RECTANGULAR		CERAMIC, METAL-SEALED COFIRED	YES	2		CMOS		14	NO					FLATPACK							125 Cel	UP			-55 Cel		DUAL		R-CDFP-F16	6 V				2 V					HC
M54HC4020K	STMicroelectronics	BINARY COUNTER	MILITARY	FLAT	16	DFP	RECTANGULAR	50k Rad(Si)	CERAMIC, METAL-SEALED COFIRED	YES	1	4000000 Hz	CMOS		14	NO		4.5	2/6	50 pF	FLATPACK	FL16,.3	ASYNCHRONOUS	220 ns	4 Amp	Counters	1.27 mm	125 Cel	UP		NEGATIVE EDGE	-55 Cel	TIN LEAD	DUAL	24 MHz	R-CDFP-F16	6 V	2.38 mm	6.91 mm	Not Qualified	2 V	e0			9.94 mm	HC/UH
HCC4510BK	STMicroelectronics	DECADE COUNTER	MILITARY	FLAT	16	DFP	RECTANGULAR		CERAMIC	YES	1	2000000 Hz	CMOS			YES			5/15	50 pF	FLATPACK	FL16,.3	SYNCHRONOUS		.64 Amp	Counters	1.27 mm	125 Cel	BIDIRECTIONAL			-55 Cel	TIN LEAD	DUAL		R-XDFP-F16				Not Qualified		e0
HCC4029BK1	STMicroelectronics	BINARY COUNTER		FLAT	16	DFP	RECTANGULAR	100k Rad(Si)	CERAMIC, METAL-SEALED COFIRED	YES			CMOS					5			FLATPACK	FL16,.3					1.27 mm	125 Cel	UP/DOWN			-55 Cel		DUAL		R-CDFP-F16	15 V	2.38 mm	6.91 mm		3 V				9.94 mm	HC
HCC4020BKG	STMicroelectronics	BINARY COUNTER		FLAT	16	DFP	RECTANGULAR	100k Rad(Si)	CERAMIC, METAL-SEALED COFIRED	YES			CMOS					5			FLATPACK	FL16,.3					1.27 mm	125 Cel	UP			-55 Cel		DUAL		R-CDFP-F16	15 V	2.38 mm	6.91 mm		3 V		NOT SPECIFIED	NOT SPECIFIED	9.94 mm	HC
M54HC393KT	STMicroelectronics	BINARY COUNTER		FLAT	16	DFP	RECTANGULAR		CERAMIC, METAL-SEALED COFIRED	YES	2		CMOS			NO					FLATPACK							125 Cel	UP			-55 Cel		DUAL		R-CDFP-F16	6 V				2 V					HC
RHFAC191K03V	STMicroelectronics	BINARY COUNTER	MILITARY	FLAT	14	DFP	RECTANGULAR	300k Rad(Si)	CERAMIC, METAL-SEALED COFIRED	YES	1		CMOS	MIL-PRF-38535 Class V	4	YES		3			FLATPACK	FL14,.25	SYNCHRONOUS				1.27 mm	150 Cel	BIDIRECTIONAL			-55 Cel		DUAL		R-CDFP-F14	6 V	2.72 mm	6.345 mm		2 V				9.5 mm	AC
HCC4516BK	STMicroelectronics	BINARY COUNTER	MILITARY	FLAT	16	DFP	RECTANGULAR		CERAMIC	YES	1	2000000 Hz	CMOS			YES			5/15	50 pF	FLATPACK	FL16,.3	SYNCHRONOUS		.64 Amp	Counters	1.27 mm	125 Cel	BIDIRECTIONAL			-55 Cel	TIN LEAD	DUAL		R-XDFP-F16				Not Qualified		e0
8607601XA	STMicroelectronics	BINARY COUNTER	MILITARY	FLAT	16	DFP	RECTANGULAR		CERAMIC, METAL-SEALED COFIRED	YES	1	21000000 Hz	CMOS	38535Q/M;38534H;883B	4	YES		4.5	2/6	50 pF	FLATPACK	FL16,.3	SYNCHRONOUS	310 ns	4 Amp	Counters	1.27 mm	125 Cel	UP		POSITIVE EDGE	-55 Cel		DUAL	25 MHz	R-CDFP-F16	6 V			Not Qualified	2 V					HC/UH
HCC40161BK	STMicroelectronics	BINARY COUNTER	MILITARY	FLAT	16	DFP	RECTANGULAR	100k Rad(Si)	CERAMIC	YES	1		CMOS	ESCC9000		YES			5/15		FLATPACK	FL16,.3	SYNCHRONOUS			Counters	1.27 mm	125 Cel	UP			-55 Cel		DUAL		R-XDFP-F16				Not Qualified
HCC4040BK	STMicroelectronics	BINARY COUNTER	MILITARY	FLAT	16	DFP	RECTANGULAR	100k Rad(Si)	CERAMIC	YES	1		CMOS	ESCC9000		NO			5/15		FLATPACK	FL16,.3	ASYNCHRONOUS			Counters	1.27 mm	125 Cel	UP			-55 Cel		DUAL		R-XDFP-F16				Not Qualified
HCC40193BK	STMicroelectronics	BINARY COUNTER	MILITARY	FLAT	16	DFP	RECTANGULAR	100k Rad(Si)	CERAMIC	YES	1		CMOS	ESCC9000		YES			5/15		FLATPACK	FL16,.3	SYNCHRONOUS			Counters	1.27 mm	125 Cel	BIDIRECTIONAL			-55 Cel		DUAL		R-XDFP-F16				Not Qualified
HCC4520BK1	STMicroelectronics	BINARY COUNTER		FLAT	16	DFP	RECTANGULAR	100k Rad(Si)	CERAMIC, METAL-SEALED COFIRED	YES			CMOS					5			FLATPACK	FL16,.3					1.27 mm	125 Cel	UP/DOWN			-55 Cel		DUAL		R-CDFP-F16	15 V	2.38 mm	6.91 mm		3 V				9.94 mm	HC

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.