18 Digital Counters 26

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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 Finish	Terminal Position	Minimum fmax	JESD-30 Code	Maximum Supply Voltage (Vsup)	Maximum Seated Height	Width	Qualification	Minimum Supply Voltage (Vsup)	Additional Features	JESD-609 Code	Maximum Time At Peak Reflow Temperature (s)	Peak Reflow Temperature (C)	Length	Family
MM74C926N	National Semiconductor	DISPLAY DRIVER COUNTER	INDUSTRIAL	THROUGH-HOLE	18	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1		CMOS	16	YES	5	3.3/5	50 pF	IN-LINE	DIP18,.3	ASYNCHRONOUS			Counters	2.54 mm	85 Cel	UP		NEGATIVE EDGE	-40 Cel	Tin/Lead (Sn/Pb)	DUAL	2 MHz	R-PDIP-T18	6 V	5.08 mm	7.62 mm	Not Qualified	3 V	4 DIGIT COUNTER	e0			21.78 mm	CMOS
MM74C927N	National Semiconductor	DISPLAY DRIVER COUNTER	INDUSTRIAL	THROUGH-HOLE	18	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1		CMOS	16	YES	5	3.3/5	50 pF	IN-LINE	DIP18,.3	ASYNCHRONOUS			Counters	2.54 mm	85 Cel	UP		NEGATIVE EDGE	-40 Cel	Tin/Lead (Sn/Pb)	DUAL	2 MHz	R-PDIP-T18	6 V	5.08 mm	7.62 mm	Not Qualified	3 V	4 DIGIT COUNTER TO READ MINUTES AND SECONDS	e0			21.78 mm	CMOS
933493470112	NXP Semiconductors	DECADE COUNTER	INDUSTRIAL	THROUGH-HOLE	18	DIP	RECTANGULAR	CERAMIC, GLASS-SEALED	NO	4		CMOS	17	YES	5			IN-LINE		ASYNCHRONOUS	1240 ns			2.54 mm	85 Cel	UP	3-STATE	POSITIVE EDGE	-40 Cel		DUAL	10 MHz	R-GDIP-T18	12.5 V	5.08 mm	7.62 mm	Not Qualified	4.5 V						4000/14000/40000
933407010112	NXP Semiconductors	DECADE COUNTER	INDUSTRIAL	THROUGH-HOLE	18	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	4		CMOS	17	YES	5			IN-LINE		ASYNCHRONOUS	1240 ns			2.54 mm	85 Cel	UP	3-STATE	POSITIVE EDGE	-40 Cel		DUAL	10 MHz	R-PDIP-T18	15 V	4.7 mm	7.62 mm	Not Qualified	3 V					21.6 mm	4000/14000/40000
933637610112	NXP Semiconductors	DECADE COUNTER	INDUSTRIAL	THROUGH-HOLE	18	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	4		CMOS	17	YES	5			IN-LINE		ASYNCHRONOUS	1240 ns			2.54 mm	85 Cel	UP	3-STATE	POSITIVE EDGE	-40 Cel		DUAL	10 MHz	R-PDIP-T18	12.5 V	4.7 mm	7.62 mm	Not Qualified	4.5 V					21.6 mm	4000/14000/40000
933450870112	NXP Semiconductors	DECADE COUNTER	INDUSTRIAL	THROUGH-HOLE	18	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	4		CMOS	17	YES	5			IN-LINE		ASYNCHRONOUS	1240 ns			2.54 mm	85 Cel	UP	3-STATE	POSITIVE EDGE	-40 Cel		DUAL	10 MHz	R-PDIP-T18	12.5 V	4.7 mm	7.62 mm	Not Qualified	4.5 V			NOT SPECIFIED	NOT SPECIFIED	21.6 mm	4000/14000/40000
HEF4737BDF	NXP Semiconductors	DECADE COUNTER	INDUSTRIAL	THROUGH-HOLE	18	DIP	RECTANGULAR	CERAMIC, METAL-SEALED COFIRED	NO	4		CMOS	17	YES				IN-LINE		ASYNCHRONOUS	1240 ns			2.54 mm	85 Cel	UP	3-STATE	POSITIVE EDGE	-40 Cel		DUAL	20 MHz	R-CDIP-T18	15 V	5.08 mm	7.62 mm	Not Qualified	3 V	4 AND HALF DIGIT COUNTER WITH OUTPUT LATCH MULTIPLEXER; TCO OUTPUT; SCHMITT TRIGGER ON CLOCK INPUT					4000/14000/40000
HEF4734VP	NXP Semiconductors	DECADE COUNTER	INDUSTRIAL	THROUGH-HOLE	18	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	4		CMOS	17	YES				IN-LINE		ASYNCHRONOUS	1240 ns			2.54 mm	85 Cel	UP	3-STATE	POSITIVE EDGE	-40 Cel	TIN/NICKEL PALLADIUM GOLD	DUAL	10 MHz	R-PDIP-T18	12.5 V	4.7 mm	7.62 mm	Not Qualified	4.5 V		e3/e4			21.675 mm	4000/14000/40000
HEF4734VD	NXP Semiconductors	DECADE COUNTER	INDUSTRIAL	THROUGH-HOLE	18	DIP	RECTANGULAR	CERAMIC, GLASS-SEALED	NO	4		CMOS	17	YES				IN-LINE		ASYNCHRONOUS	1240 ns			2.54 mm	85 Cel	UP	3-STATE	POSITIVE EDGE	-40 Cel		DUAL	10 MHz	R-GDIP-T18	12.5 V	5.08 mm	7.62 mm	Not Qualified	4.5 V						4000/14000/40000
HEF4734BD	NXP Semiconductors	DECADE COUNTER	INDUSTRIAL	THROUGH-HOLE	18	DIP	RECTANGULAR	CERAMIC, GLASS-SEALED	NO	4		CMOS	17	YES				IN-LINE		ASYNCHRONOUS	1240 ns			2.54 mm	85 Cel	UP	3-STATE	POSITIVE EDGE	-40 Cel		DUAL	10 MHz	R-GDIP-T18	15 V	5.08 mm	7.62 mm	Not Qualified	3 V						4000/14000/40000
HEF4737VDB	NXP Semiconductors	DECADE COUNTER	INDUSTRIAL	THROUGH-HOLE	18	DIP	RECTANGULAR	CERAMIC, GLASS-SEALED	NO	4		CMOS	17	YES	5		15 pF	IN-LINE		ASYNCHRONOUS	1240 ns			2.54 mm	85 Cel	UP	3-STATE	POSITIVE EDGE	-40 Cel		DUAL	3 MHz	R-GDIP-T18	12.5 V	5.08 mm	7.62 mm	Not Qualified	4.5 V	4 AND HALF DIGIT COUNTER WITH OUTPUT LATCH MULTIPLEXER; TCO OUTPUT; SCHMITT TRIGGER ON CLOCK INPUT					4000/14000/40000
HEF4737BP	NXP Semiconductors	DECADE COUNTER	INDUSTRIAL	THROUGH-HOLE	18	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	4	3000000 Hz	CMOS	17	YES	5		50 pF	IN-LINE	DIP18,.3	ASYNCHRONOUS	1240 ns	1.4 Amp	Counters	2.54 mm	85 Cel	UP	3-STATE	POSITIVE EDGE	-40 Cel		DUAL	20 MHz	R-PDIP-T18	15 V	4.7 mm	7.62 mm	Not Qualified	3 V	4 AND HALF DIGIT COUNTER WITH OUTPUT LATCH MULTIPLEXER; TCO OUTPUT; SCHMITT TRIGGER ON CLOCK INPUT				21.6 mm	4000/14000/40000
HEF4737BDB	NXP Semiconductors	DECADE COUNTER	INDUSTRIAL	THROUGH-HOLE	18	DIP	RECTANGULAR	CERAMIC, GLASS-SEALED	NO	4		CMOS	17	YES	5		50 pF	IN-LINE		ASYNCHRONOUS	1240 ns			2.54 mm	85 Cel	UP	3-STATE	POSITIVE EDGE	-40 Cel		DUAL	3 MHz	R-GDIP-T18	15 V	5.08 mm	7.62 mm	Not Qualified	3 V	4 AND HALF DIGIT COUNTER WITH OUTPUT LATCH MULTIPLEXER; TCO OUTPUT; SCHMITT TRIGGER ON CLOCK INPUT					4000/14000/40000
HEF4737VPN	NXP Semiconductors	DECADE COUNTER	INDUSTRIAL	THROUGH-HOLE	18	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	4		CMOS	17	YES	5			IN-LINE		ASYNCHRONOUS	1240 ns			2.54 mm	85 Cel	UP	3-STATE	POSITIVE EDGE	-40 Cel		DUAL	20 MHz	R-PDIP-T18	12.5 V	4.7 mm	7.62 mm	Not Qualified	4.5 V	4 AND HALF DIGIT COUNTER WITH OUTPUT LATCH MULTIPLEXER; TCO OUTPUT; SCHMITT TRIGGER ON CLOCK INPUT				21.6 mm	4000/14000/40000
HEF4737BPN	NXP Semiconductors	DECADE COUNTER	INDUSTRIAL	THROUGH-HOLE	18	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	4		CMOS	17	YES				IN-LINE		ASYNCHRONOUS	1240 ns			2.54 mm	85 Cel	UP	3-STATE	POSITIVE EDGE	-40 Cel		DUAL	20 MHz	R-PDIP-T18	15 V	4.7 mm	7.62 mm	Not Qualified	3 V	4 AND HALF DIGIT COUNTER WITH OUTPUT LATCH MULTIPLEXER; TCO OUTPUT; SCHMITT TRIGGER ON CLOCK INPUT				21.6 mm	4000/14000/40000
HEF4734BP	NXP Semiconductors	DECADE COUNTER	INDUSTRIAL	THROUGH-HOLE	18	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	4		CMOS	17	YES				IN-LINE		ASYNCHRONOUS	1240 ns			2.54 mm	85 Cel	UP	3-STATE	POSITIVE EDGE	-40 Cel	TIN/NICKEL PALLADIUM GOLD	DUAL	10 MHz	R-PDIP-T18	15 V	4.7 mm	7.62 mm	Not Qualified	3 V		e3/e4			21.675 mm	4000/14000/40000
HEF4737BD	NXP Semiconductors	DECADE COUNTER	INDUSTRIAL	THROUGH-HOLE	18	DIP	RECTANGULAR	CERAMIC, METAL-SEALED COFIRED	NO	4	3000000 Hz	CMOS	17	YES	5		50 pF	IN-LINE	DIP18,.3	ASYNCHRONOUS	1240 ns	1.4 Amp	Counters	2.54 mm	85 Cel	UP	3-STATE	POSITIVE EDGE	-40 Cel		DUAL	20 MHz	R-CDIP-T18	15 V	5.08 mm	7.62 mm	Not Qualified	3 V	4 AND HALF DIGIT COUNTER WITH OUTPUT LATCH MULTIPLEXER; TCO OUTPUT; SCHMITT TRIGGER ON CLOCK INPUT					4000/14000/40000
HEF4737VDF	NXP Semiconductors	DECADE COUNTER	INDUSTRIAL	THROUGH-HOLE	18	DIP	RECTANGULAR	CERAMIC, METAL-SEALED COFIRED	NO	4		CMOS	17	YES	5			IN-LINE		ASYNCHRONOUS	1240 ns			2.54 mm	85 Cel	UP	3-STATE	POSITIVE EDGE	-40 Cel		DUAL	20 MHz	R-CDIP-T18	12.5 V	5.08 mm	7.62 mm	Not Qualified	4.5 V	4 AND HALF DIGIT COUNTER WITH OUTPUT LATCH MULTIPLEXER; TCO OUTPUT; SCHMITT TRIGGER ON CLOCK INPUT					4000/14000/40000
HEF4737VD	NXP Semiconductors	DECADE COUNTER	INDUSTRIAL	THROUGH-HOLE	18	DIP	RECTANGULAR	CERAMIC, METAL-SEALED COFIRED	NO	4	3000000 Hz	CMOS	17	YES	5		15 pF	IN-LINE	DIP18,.3	ASYNCHRONOUS	1240 ns	1.4 Amp	Counters	2.54 mm	85 Cel	UP	3-STATE	POSITIVE EDGE	-40 Cel		DUAL	20 MHz	R-CDIP-T18	12.5 V	5.08 mm	7.62 mm	Not Qualified	4.5 V	4 AND HALF DIGIT COUNTER WITH OUTPUT LATCH MULTIPLEXER; TCO OUTPUT; SCHMITT TRIGGER ON CLOCK INPUT					4000/14000/40000
HEF4734BDF	NXP Semiconductors	DECADE COUNTER	INDUSTRIAL	THROUGH-HOLE	18	DIP	RECTANGULAR	CERAMIC, GLASS-SEALED	NO	4		CMOS	17	YES				IN-LINE		ASYNCHRONOUS	1240 ns			2.54 mm	85 Cel	UP	3-STATE	POSITIVE EDGE	-40 Cel		DUAL	10 MHz	R-GDIP-T18	15 V	5.08 mm	7.62 mm	Not Qualified	3 V						4000/14000/40000
HEF4734VDF	NXP Semiconductors	DECADE COUNTER	INDUSTRIAL	THROUGH-HOLE	18	DIP	RECTANGULAR	CERAMIC, GLASS-SEALED	NO	4		CMOS	17	YES				IN-LINE		ASYNCHRONOUS	1240 ns			2.54 mm	85 Cel	UP	3-STATE	POSITIVE EDGE	-40 Cel		DUAL	10 MHz	R-GDIP-T18	12.5 V	5.08 mm	7.62 mm	Not Qualified	4.5 V						4000/14000/40000
HEF4734BPN	NXP Semiconductors	DECADE COUNTER	INDUSTRIAL	THROUGH-HOLE	18	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	4		CMOS	17	YES				IN-LINE		ASYNCHRONOUS	1240 ns			2.54 mm	85 Cel	UP	3-STATE	POSITIVE EDGE	-40 Cel	TIN/NICKEL PALLADIUM GOLD	DUAL	10 MHz	R-PDIP-T18	15 V	4.7 mm	7.62 mm	Not Qualified	3 V		e3/e4			21.675 mm	4000/14000/40000
HEF4734VPN	NXP Semiconductors	DECADE COUNTER	INDUSTRIAL	THROUGH-HOLE	18	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	4		CMOS	17	YES				IN-LINE		ASYNCHRONOUS	1240 ns			2.54 mm	85 Cel	UP	3-STATE	POSITIVE EDGE	-40 Cel	TIN/NICKEL PALLADIUM GOLD	DUAL	10 MHz	R-PDIP-T18	12.5 V	4.7 mm	7.62 mm	Not Qualified	4.5 V		e3/e4			21.675 mm	4000/14000/40000
HEF4737VP	NXP Semiconductors	DECADE COUNTER	INDUSTRIAL	THROUGH-HOLE	18	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	4	3000000 Hz	CMOS	17	YES	5		15 pF	IN-LINE	DIP18,.3	ASYNCHRONOUS	1240 ns	1.4 Amp	Counters	2.54 mm	85 Cel	UP	3-STATE	POSITIVE EDGE	-40 Cel		DUAL	20 MHz	R-PDIP-T18	12.5 V	4.7 mm	7.62 mm	Not Qualified	4.5 V	4 AND HALF DIGIT COUNTER WITH OUTPUT LATCH MULTIPLEXER; TCO OUTPUT; SCHMITT TRIGGER ON CLOCK INPUT				21.6 mm	4000/14000/40000
HEF4737VPB	NXP Semiconductors	DECADE COUNTER	INDUSTRIAL	THROUGH-HOLE	18	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	4		CMOS	17	YES	5		15 pF	IN-LINE		ASYNCHRONOUS	1240 ns			2.54 mm	85 Cel	UP	3-STATE	POSITIVE EDGE	-40 Cel		DUAL	10 MHz	R-PDIP-T18	12.5 V	4.7 mm	7.62 mm	Not Qualified	4.5 V	4 AND HALF DIGIT COUNTER WITH OUTPUT LATCH MULTIPLEXER; TCO OUTPUT; SCHMITT TRIGGER ON CLOCK INPUT				21.6 mm	4000/14000/40000
HEF4737BPB	NXP Semiconductors	DECADE COUNTER	INDUSTRIAL	THROUGH-HOLE	18	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	4		CMOS	17	YES	5		50 pF	IN-LINE		ASYNCHRONOUS	1240 ns			2.54 mm	85 Cel	UP	3-STATE	POSITIVE EDGE	-40 Cel	TIN/NICKEL PALLADIUM GOLD	DUAL	3 MHz	R-PDIP-T18	15 V	4.7 mm	7.62 mm	Not Qualified	3 V	4 AND HALF DIGIT COUNTER WITH OUTPUT LATCH MULTIPLEXER; TCO OUTPUT; SCHMITT TRIGGER ON CLOCK INPUT	e3/e4				4000/14000/40000

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.