J BEND Digital Counters 323

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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	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 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	Maximum Time At Peak Reflow Temperature (s)	Peak Reflow Temperature (C)	Length	Family
SN74LS693FN	Texas Instruments	BINARY COUNTER	COMMERCIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1		TTL	4	YES	5		45 pF	CHIP CARRIER	LDCC20,.4SQ	SYNCHRONOUS	25 ns		Counters	1.27 mm	70 Cel	UP	3-STATE	POSITIVE EDGE	0 Cel	QUAD		S-PQCC-J20	5.25 V	4.57 mm	8.9662 mm	Not Qualified	4.75 V	70 mA	REGISTER/COUNTER OUTPUT SELECT; TCO OUTPUT; REGISTERED OUTPUTS	NOT SPECIFIED	NOT SPECIFIED	8.9662 mm	LS
SN74LS68FN3	Texas Instruments	DECADE COUNTER	COMMERCIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	2		TTL		NO				CHIP CARRIER	LDCC20,.4SQ	ASYNCHRONOUS			Counters	1.27 mm	70 Cel	UP			0 Cel	QUAD		S-PQCC-J20								NOT SPECIFIED	NOT SPECIFIED
SN74LS697FN	Texas Instruments	BINARY COUNTER	COMMERCIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1		TTL	4	YES	5		45 pF	CHIP CARRIER	LDCC20,.4SQ	SYNCHRONOUS	25 ns		Counters	1.27 mm	70 Cel	BIDIRECTIONAL	3-STATE	POSITIVE EDGE	0 Cel	QUAD		S-PQCC-J20	5.25 V	4.57 mm	8.9662 mm	Not Qualified	4.75 V	70 mA	REGISTER/COUNTER OUTPUT SELECT; TCO OUTPUT; REGISTERED OUTPUTS	NOT SPECIFIED	NOT SPECIFIED	8.9662 mm	LS
SN74AS161FN3	Texas Instruments	BINARY COUNTER	COMMERCIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1	75000000 Hz	TTL		YES	5	5		CHIP CARRIER	LDCC20,.4SQ	SYNCHRONOUS		20 Amp	Counters	1.27 mm	70 Cel	UP			0 Cel	QUAD		S-PQCC-J20						53 mA
SN74S163FN	Texas Instruments	BINARY COUNTER	COMMERCIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1		TTL	4	YES	5		15 pF	CHIP CARRIER	LDCC20,.4SQ	SYNCHRONOUS	15 ns		Counters	1.27 mm	70 Cel	UP		POSITIVE EDGE	0 Cel	QUAD	40 MHz	S-PQCC-J20	5.25 V	4.57 mm	8.9662 mm	Not Qualified	4.75 V	160 mA	TCO OUTPUT	NOT SPECIFIED	NOT SPECIFIED	8.9662 mm	S
SN74LS192FN	Texas Instruments	DECADE COUNTER	COMMERCIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1	25000000 Hz	TTL	4	YES	5	5	15 pF	CHIP CARRIER	LDCC20,.4SQ	SYNCHRONOUS	47 ns	8 Amp	Counters	1.27 mm	70 Cel	BIDIRECTIONAL		POSITIVE EDGE	0 Cel	QUAD	25 MHz	S-PQCC-J20	5.25 V	4.57 mm	8.9662 mm	Not Qualified	4.75 V	34 mA	TCO UP AND TCO DOWN OUTPUTS; SEPARATE UP/DOWN CLOCK	NOT SPECIFIED	NOT SPECIFIED	8.9662 mm	LS
SN74ALS192FN	Texas Instruments	DECADE COUNTER	COMMERCIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	2		TTL		YES	5	5		CHIP CARRIER	LDCC20,.4SQ	SYNCHRONOUS			Counters	1.27 mm	70 Cel	BIDIRECTIONAL			0 Cel	QUAD		S-PQCC-J20				Not Qualified
SN74LS160AFN	Texas Instruments	DECADE COUNTER	COMMERCIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1		TTL	4	YES	5	5	15 pF	CHIP CARRIER	LDCC20,.4SQ	SYNCHRONOUS	27 ns		Counters	1.27 mm	70 Cel	UP		POSITIVE EDGE	0 Cel	QUAD	25 MHz	S-PQCC-J20	5.25 V	4.57 mm	8.9662 mm	Not Qualified	4.75 V	32 mA	TCO OUTPUT	NOT SPECIFIED	NOT SPECIFIED	8.9662 mm	LS
SN74LS590FN3	Texas Instruments	BINARY COUNTER	COMMERCIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1		TTL		NO	5	5		CHIP CARRIER	LDCC20,.4SQ	ASYNCHRONOUS			Counters	1.27 mm	70 Cel	UP	3-STATE		0 Cel	QUAD		S-PQCC-J20								NOT SPECIFIED	NOT SPECIFIED
SN74AS867FN	Texas Instruments	BINARY COUNTER	COMMERCIAL	J BEND	28	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1		TTL		YES				CHIP CARRIER	LDCC28,.5SQ	SYNCHRONOUS			Counters	1.27 mm	70 Cel	BIDIRECTIONAL			0 Cel	QUAD		S-PQCC-J28				Not Qualified
SN74ALS569AFN	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	3-STATE		0 Cel	QUAD		S-PQCC-J20				Not Qualified				NOT SPECIFIED	NOT SPECIFIED
SN74LS160AFN3	Texas Instruments	DECADE 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	UP			0 Cel	QUAD		S-PQCC-J20
SN74LS691FN3	Texas Instruments	BINARY COUNTER	COMMERCIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1		TTL		YES				CHIP CARRIER	LDCC20,.4SQ	SYNCHRONOUS			Counters	1.27 mm	70 Cel	UP	3-STATE		0 Cel	QUAD		S-PQCC-J20								NOT SPECIFIED	NOT SPECIFIED
SN74ALS191FN3	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			0 Cel	QUAD		S-PQCC-J20
SN74HC4022FNP3	Texas Instruments	DIVIDE BY 8 COUNTER	COMMERCIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1	25000000 Hz	CMOS		NO	5	5	50 pF	CHIP CARRIER	LDCC20,.4SQ	SYNCHRONOUS			Counters	1.27 mm	70 Cel	UP			0 Cel	QUAD		S-PQCC-J20								NOT SPECIFIED	NOT SPECIFIED
SN74ALS190FN-00	Texas Instruments	DECADE COUNTER	COMMERCIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1		TTL	4	YES	5		50 pF	CHIP CARRIER		SYNCHRONOUS	18 ns			1.27 mm	70 Cel	BIDIRECTIONAL		POSITIVE EDGE	0 Cel	QUAD	25 MHz	S-PQCC-J20	5.5 V	4.57 mm	8.9662 mm	Not Qualified	4.5 V	22 mA	TCO OUTPUT			8.9662 mm	ALS
SN74LS293FN3	Texas Instruments	BINARY COUNTER	COMMERCIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1		TTL		NO	5	5		CHIP CARRIER	LDCC20,.4SQ	ASYNCHRONOUS			Counters	1.27 mm	70 Cel	UP			0 Cel	QUAD		S-PQCC-J20
SN74S162FN	Texas Instruments	DECADE COUNTER	COMMERCIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1		TTL	4	YES	5		15 pF	CHIP CARRIER	LDCC20,.4SQ	SYNCHRONOUS	15 ns		Counters	1.27 mm	70 Cel	UP		POSITIVE EDGE	0 Cel	QUAD	40 MHz	S-PQCC-J20	5.25 V	4.57 mm	8.9662 mm	Not Qualified	4.75 V	160 mA	TCO OUTPUT	NOT SPECIFIED	NOT SPECIFIED	8.9662 mm	S
SN74LS697FN3	Texas Instruments	BINARY COUNTER	COMMERCIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1		TTL		YES				CHIP CARRIER	LDCC20,.4SQ	SYNCHRONOUS			Counters	1.27 mm	70 Cel	BIDIRECTIONAL	3-STATE		0 Cel	QUAD		S-PQCC-J20								NOT SPECIFIED	NOT SPECIFIED
SN74S169FN	Texas Instruments	BINARY COUNTER	COMMERCIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1		TTL	4	YES	5	5	15 pF	CHIP CARRIER	LDCC20,.4SQ	SYNCHRONOUS	15 ns		Counters	1.27 mm	70 Cel	BIDIRECTIONAL		POSITIVE EDGE	0 Cel	QUAD	40 MHz	S-PQCC-J20	5.25 V	4.57 mm	8.9662 mm	Not Qualified	4.75 V	160 mA	TCO OUTPUT	NOT SPECIFIED	NOT SPECIFIED	8.9662 mm	S
SN74ALS561AFN-00	Texas Instruments	BINARY COUNTER	COMMERCIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1		TTL	4	YES	5		50 pF	CHIP CARRIER		SYNCHRONOUS	18 ns			1.27 mm	70 Cel	UP	3-STATE	POSITIVE EDGE	0 Cel	QUAD	30 MHz	S-PQCC-J20	5.5 V	4.57 mm	8.9662 mm	Not Qualified	4.5 V	33 mA	TCO OUTPUT; COUNT ENABLE INPUTS			8.9662 mm	ALS
SN74AS162FN-00	Texas Instruments	DECADE COUNTER	COMMERCIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1		TTL	4	YES	5		50 pF	CHIP CARRIER		SYNCHRONOUS	6 ns			1.27 mm	70 Cel	UP		POSITIVE EDGE	0 Cel	QUAD		S-PQCC-J20	5.5 V	4.57 mm	8.9662 mm	Not Qualified	4.5 V		TCO OUTPUT			8.9662 mm	AS
SN74ALS560AFN-00	Texas Instruments	DECADE COUNTER	COMMERCIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1		TTL	4	YES	5		50 pF	CHIP CARRIER		SYNCHRONOUS	18 ns			1.27 mm	70 Cel	UP	3-STATE	POSITIVE EDGE	0 Cel	QUAD	20 MHz	S-PQCC-J20	5.5 V	4.57 mm	8.9662 mm	Not Qualified	4.5 V	33 mA	TCO OUTPUT; COUNT ENABLE INPUTS			8.9662 mm	ALS
SN74LS393FN3	Texas Instruments	BINARY COUNTER	COMMERCIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	2		TTL		NO	5	5		CHIP CARRIER	LDCC20,.4SQ	ASYNCHRONOUS			Counters	1.27 mm	70 Cel	BIDIRECTIONAL			0 Cel	QUAD		S-PQCC-J20
SN74LS163AFN3	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	UP			0 Cel	QUAD		S-PQCC-J20
SN74ALS568AFN-00	Texas Instruments	DECADE COUNTER	COMMERCIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1		TTL	4	YES	5		50 pF	CHIP CARRIER		SYNCHRONOUS	16 ns			1.27 mm	70 Cel	BIDIRECTIONAL	3-STATE	POSITIVE EDGE	0 Cel	QUAD	20 MHz	S-PQCC-J20	5.5 V	4.57 mm	8.9662 mm	Not Qualified	4.5 V	32 mA	TCO OUTPUT; CLOCKED CARRY OUTPUT			8.9662 mm	ALS
SN74ALS168AFN	Texas Instruments	DECADE 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			0 Cel	QUAD		S-PQCC-J20				Not Qualified
SN74LS669FN	Texas Instruments	BINARY COUNTER	COMMERCIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1		TTL	4	YES	5	5	15 pF	CHIP CARRIER	LDCC20,.4SQ	SYNCHRONOUS	27 ns		Counters	1.27 mm	70 Cel	BIDIRECTIONAL		POSITIVE EDGE	0 Cel	QUAD	25 MHz	S-PQCC-J20	5.25 V	4.57 mm	8.9662 mm	Not Qualified	4.75 V	34 mA	TCO OUTPUT	NOT SPECIFIED	NOT SPECIFIED	8.9662 mm	LS
SN74ALS163AFN	Texas Instruments	BINARY COUNTER	COMMERCIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1	30000000 Hz	TTL		YES	5	5		CHIP CARRIER	LDCC20,.4SQ	SYNCHRONOUS			Counters	1.27 mm	70 Cel	UP			0 Cel	QUAD		S-PQCC-J20				Not Qualified
SN74AS169FN3	Texas Instruments	BINARY COUNTER	COMMERCIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1	75000000 Hz	TTL		YES	5	5		CHIP CARRIER	LDCC20,.4SQ	SYNCHRONOUS		20 Amp	Counters	1.27 mm	70 Cel	BIDIRECTIONAL			0 Cel	QUAD		S-PQCC-J20						63 mA
SN74ALS192FN3	Texas Instruments	DECADE COUNTER	COMMERCIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	2		TTL		YES	5	5		CHIP CARRIER	LDCC20,.4SQ	SYNCHRONOUS			Counters	1.27 mm	70 Cel	BIDIRECTIONAL			0 Cel	QUAD		S-PQCC-J20
SN74ALS161AFN3	Texas Instruments	BINARY COUNTER	COMMERCIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1	30000000 Hz	TTL		YES	5	5		CHIP CARRIER	LDCC20,.4SQ	SYNCHRONOUS			Counters	1.27 mm	70 Cel	UP			0 Cel	QUAD		S-PQCC-J20
SN74S197FN	Texas Instruments	BINARY COUNTER	COMMERCIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	2		TTL	3	YES	5		15 pF	CHIP CARRIER	LDCC20,.4SQ	ASYNCHRONOUS	33 ns		Counters	1.27 mm	70 Cel	UP		NEGATIVE EDGE	0 Cel	QUAD	100 MHz	S-PQCC-J20	5.25 V	4.57 mm	8.9662 mm	Not Qualified	4.75 V	120 mA	DIVIDE BY 2 AND DIVIDE BY 8 FUNCTIONS	NOT SPECIFIED	NOT SPECIFIED	8.9662 mm	S
SN74S196FN	Texas Instruments	DECADE COUNTER	COMMERCIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	2		TTL	3	YES	5		15 pF	CHIP CARRIER	LDCC20,.4SQ	ASYNCHRONOUS	24 ns		Counters	1.27 mm	70 Cel	UP		NEGATIVE EDGE	0 Cel	QUAD	100 MHz	S-PQCC-J20	5.25 V	4.57 mm	8.9662 mm	Not Qualified	4.75 V	120 mA	DIVIDE BY 2 AND DIVIDE BY 5 FUNCTIONS	NOT SPECIFIED	NOT SPECIFIED	8.9662 mm	S
SN74AS869FN3	Texas Instruments	BINARY COUNTER	COMMERCIAL	J BEND	28	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1		TTL		YES	5	5		CHIP CARRIER	LDCC28,.5SQ	SYNCHRONOUS			Counters	1.27 mm	70 Cel	BIDIRECTIONAL			0 Cel	QUAD		S-PQCC-J28
SN74LS693FN3	Texas Instruments	BINARY COUNTER	COMMERCIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1		TTL		YES				CHIP CARRIER	LDCC20,.4SQ	SYNCHRONOUS			Counters	1.27 mm	70 Cel	UP	3-STATE		0 Cel	QUAD		S-PQCC-J20								NOT SPECIFIED	NOT SPECIFIED
SN74LS668FN	Texas Instruments	DECADE COUNTER	COMMERCIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1		TTL	4	YES	5	5	15 pF	CHIP CARRIER	LDCC20,.4SQ	SYNCHRONOUS	27 ns		Counters	1.27 mm	70 Cel	BIDIRECTIONAL		POSITIVE EDGE	0 Cel	QUAD	25 MHz	S-PQCC-J20	5.25 V	4.57 mm	8.9662 mm	Not Qualified	4.75 V	34 mA	TCO OUTPUT; COUNT ENABLE INPUT	NOT SPECIFIED	NOT SPECIFIED	8.9662 mm	LS
SN74HC162FN3	Texas Instruments	DECADE COUNTER	INDUSTRIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1		CMOS		YES		2/6		CHIP CARRIER	LDCC20,.4SQ	SYNCHRONOUS			Counters	1.27 mm	85 Cel	UP			-40 Cel	QUAD		S-PQCC-J20
SN74ALS162AFN	Texas Instruments	DECADE COUNTER	COMMERCIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1	30000000 Hz	TTL		YES	5	5		CHIP CARRIER	LDCC20,.4SQ	SYNCHRONOUS			Counters	1.27 mm	70 Cel	UP			0 Cel	QUAD		S-PQCC-J20				Not Qualified
SN74ALS160AFN3	Texas Instruments	DECADE COUNTER	COMMERCIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1	30000000 Hz	TTL		YES	5	5		CHIP CARRIER	LDCC20,.4SQ	SYNCHRONOUS			Counters	1.27 mm	70 Cel	UP			0 Cel	QUAD		S-PQCC-J20
SN74HC163FN3	Texas Instruments	BINARY COUNTER	INDUSTRIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1		CMOS		YES		2/6		CHIP CARRIER	LDCC20,.4SQ	SYNCHRONOUS			Counters	1.27 mm	85 Cel	UP			-40 Cel	QUAD		S-PQCC-J20								NOT SPECIFIED	NOT SPECIFIED
SN74AS169AFN	Texas Instruments	BINARY COUNTER	COMMERCIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1	75000000 Hz	TTL		YES	5	5		CHIP CARRIER	LDCC20,.4SQ	SYNCHRONOUS		20 Amp	Counters	1.27 mm	70 Cel	BIDIRECTIONAL			0 Cel	QUAD		S-PQCC-J20				Not Qualified		63 mA
SN74LS69FN3	Texas Instruments	BINARY COUNTER	COMMERCIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	2		TTL		NO				CHIP CARRIER	LDCC20,.4SQ	ASYNCHRONOUS			Counters	1.27 mm	70 Cel	UP			0 Cel	QUAD		S-PQCC-J20								NOT SPECIFIED	NOT SPECIFIED
SN74HC490FN	Texas Instruments	DECADE COUNTER	INDUSTRIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	2		CMOS		NO				CHIP CARRIER	LDCC20,.4SQ	ASYNCHRONOUS			Counters	1.27 mm	85 Cel	UP			-40 Cel	QUAD		S-PQCC-J20				Not Qualified
SN74LS193FN	Texas Instruments	BINARY COUNTER	COMMERCIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1		TTL	4	YES	5	5	15 pF	CHIP CARRIER	LDCC20,.4SQ	SYNCHRONOUS	47 ns		Counters	1.27 mm	70 Cel	BIDIRECTIONAL		POSITIVE EDGE	0 Cel	QUAD	25 MHz	S-PQCC-J20	5.25 V	4.57 mm	8.9662 mm	Not Qualified	4.75 V	34 mA	TCO UP AND TCO DOWN OUTPUTS; SEPARATE UP/DOWN CLOCK	NOT SPECIFIED	NOT SPECIFIED	8.9662 mm	LS
SN74ALS168BFN	Texas Instruments	DECADE 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			0 Cel	QUAD		S-PQCC-J20				Not Qualified
SN74ALS163AFN-00	Texas Instruments	BINARY 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	0 Cel	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
SN74ALS568AFN	Texas Instruments	DECADE 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	3-STATE		0 Cel	QUAD		S-PQCC-J20				Not Qualified				NOT SPECIFIED	NOT SPECIFIED

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.