20 Prescaler & Multivibrators 111

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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	Nominal Supply Voltage / Vsup (V)	Power Supplies (V)	Load Capacitance (CL)	Package Style (Meter)	Package Equivalence Code	Propagation Delay (tpd)	Sub-Category	Terminal Pitch	Maximum Operating Temperature	Minimum Operating Temperature	No. of Data/Clock Inputs	Terminal Finish	Terminal Position	Minimum fmax	JESD-30 Code	Maximum Supply Voltage (Vsup)	Maximum Seated Height	Width	Qualification	Output Polarity	Minimum Supply Voltage (Vsup)	Additional Features	JESD-609 Code	Length	Family
M74HC7294C1R	STMicroelectronics	PRESCALER	INDUSTRIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1	26000000 Hz	CMOS	5	2/6	50 pF	CHIP CARRIER	LDCC20,.4SQ	83 ns	Prescaler/Multivibrators	1.27 mm	85 Cel	-40 Cel	2	MATTE TIN	QUAD	26 MHz	S-PQCC-J20	6 V	4.57 mm	8.965 mm	Not Qualified		2 V	SELECTABLE DIVISION RATIO 2 TO THE POWER OF 2 TO 2 TO THE POWER OF15	e3	8.965 mm	HC/UH
M74HC4538C1R	STMicroelectronics	MONOSTABLE MULTIVIBRATOR	INDUSTRIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	2		CMOS	5	2/6	50 pF	CHIP CARRIER	LDCC20,.4SQ	63 ns	Prescaler/Multivibrators	1.27 mm	85 Cel	-40 Cel	2	TIN LEAD	QUAD		S-PQCC-J20	6 V	4.57 mm	8.9662 mm	Not Qualified	COMPLEMENTARY	2 V	RETRIGGERABLE	e0	8.9662 mm	HC/UH
M74HC423AC1R	STMicroelectronics	MONOSTABLE MULTIVIBRATOR	INDUSTRIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	2		CMOS	5	2/6	50 pF	CHIP CARRIER	LDCC20,.4SQ	53 ns	Prescaler/Multivibrators	1.27 mm	85 Cel	-40 Cel	2	MATTE TIN	QUAD		S-PQCC-J20	6 V	4.57 mm	8.9662 mm	Not Qualified	COMPLEMENTARY	2 V	RETRIGGERABLE	e3	8.9662 mm	HC/UH
M74HC294C1	STMicroelectronics	PRESCALER	INDUSTRIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1	26000000 Hz	CMOS		2/6		CHIP CARRIER	LDCC20,.4SQ	571 ns	Prescaler/Multivibrators	1.27 mm	85 Cel	-40 Cel	2	TIN LEAD	QUAD	31 MHz	S-PQCC-J20	6 V	4.57 mm	8.9662 mm	Not Qualified	INVERTED	2 V		e0	8.9662 mm	HC/UH
M74HC123C1R	STMicroelectronics	MONOSTABLE MULTIVIBRATOR	INDUSTRIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	2		CMOS	5	2/6	50 pF	CHIP CARRIER	LDCC20,.4SQ	53 ns	Prescaler/Multivibrators	1.27 mm	85 Cel	-40 Cel	2	MATTE TIN	QUAD		S-PQCC-J20	6 V	4.57 mm	8.9662 mm	Not Qualified	COMPLEMENTARY	2 V	RETRIGGERABLE; TRIGGERABLE FROM CLEAR INPUT ALSO	e3	8.9662 mm	HC/UH
M74HC292C1R	STMicroelectronics	PRESCALER	INDUSTRIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1	22000000 Hz	CMOS	5	2/6	50 pF	CHIP CARRIER	LDCC20,.4SQ	88 ns	Prescaler/Multivibrators	1.27 mm	85 Cel	-40 Cel	2	MATTE TIN	QUAD	22 MHz	S-PQCC-J20	6 V	4.57 mm	8.965 mm	Not Qualified		2 V	SELECTABLE DIVISION RATIO 2 TO THE POWER OF 2 TO 2 TO THE POWER OF 31	e3	8.965 mm	HC/UH
M74HC7294C1	STMicroelectronics	PRESCALER	INDUSTRIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1	26000000 Hz	CMOS		2/6		CHIP CARRIER	LDCC20,.4SQ	571 ns	Prescaler/Multivibrators	1.27 mm	85 Cel	-40 Cel	2	TIN LEAD	QUAD	31 MHz	S-PQCC-J20	6 V	4.57 mm	8.9662 mm	Not Qualified	INVERTED	2 V		e0	8.9662 mm	HC/UH
M74HC123AC1R	STMicroelectronics	MONOSTABLE MULTIVIBRATOR	INDUSTRIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	2		CMOS	5	2/6	50 pF	CHIP CARRIER	LDCC20,.4SQ	53 ns	Prescaler/Multivibrators	1.27 mm	85 Cel	-40 Cel	2	MATTE TIN	QUAD		S-PQCC-J20	6 V	4.57 mm	8.9662 mm	Not Qualified	COMPLEMENTARY	2 V	RETRIGGERABLE; TRIGGERABLE FROM CLEAR INPUT ALSO	e3	8.9662 mm	HC/UH
M74HC294C1R	STMicroelectronics	PRESCALER	INDUSTRIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1	26000000 Hz	CMOS	5	2/6	50 pF	CHIP CARRIER	LDCC20,.4SQ	83 ns	Prescaler/Multivibrators	1.27 mm	85 Cel	-40 Cel	2	MATTE TIN	QUAD	26 MHz	S-PQCC-J20	6 V	4.57 mm	8.965 mm	Not Qualified		2 V	SELECTABLE DIVISION RATIO 2 TO THE POWER OF 2 TO 2 TO THE POWER OF15	e3	8.965 mm	HC/UH
HCF4538BC1	STMicroelectronics	MONOSTABLE MULTIVIBRATOR	INDUSTRIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	2		CMOS	5	5/15	50 pF	CHIP CARRIER	LDCC20,.4SQ	600 ns	Prescaler/Multivibrators	1.27 mm	85 Cel	-40 Cel	2	TIN LEAD	QUAD		S-PQCC-J20	15 V	4.57 mm	8.965 mm	Not Qualified	COMPLEMENTARY	3 V	RETRIGGERABLE	e0	8.965 mm	4000/14000/40000
HCF4098BC1	STMicroelectronics	MONOSTABLE MULTIVIBRATOR	INDUSTRIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	2		CMOS	5	3/15	50 pF	CHIP CARRIER	LDCC20,.4SQ	500 ns	Prescaler/Multivibrators	1.27 mm	85 Cel	-40 Cel	2	MATTE TIN	QUAD		S-PQCC-J20	15 V	4.57 mm	8.9662 mm	Not Qualified	COMPLEMENTARY	3 V	RETRIGGERABLE	e3	8.9662 mm	4000/14000/40000
HCF4047BC1	STMicroelectronics	MONOSTABLE MULTIVIBRATOR	INDUSTRIAL	J BEND	20	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1		CMOS	5	3/15	50 pF	CHIP CARRIER	LDCC20,.4SQ	1000 ns	Prescaler/Multivibrators	1.27 mm	85 Cel	-40 Cel	2	MATTE TIN	QUAD		S-PQCC-J20	15 V	4.57 mm	8.9662 mm	Not Qualified	COMPLEMENTARY	3 V	RETRIGGERABLE; FREE RUNNING/GATABLE ASTABLE OPERATING MODES WITH OSCILLATOR OUTPUT	e3	8.9662 mm	4000/14000/40000
M38510/31403B2X	NXP Semiconductors	MONOSTABLE MULTIVIBRATOR	MILITARY	NO LEAD	20	QCCN	SQUARE	CERAMIC, METAL-SEALED COFIRED	YES	1		TTL	5			CHIP CARRIER		92 ns			125 Cel	-55 Cel	2		QUAD		S-CQCC-N20	5.5 V			Not Qualified	COMPLEMENTARY	4.5 V				LS
KA2185	Samsung	PRESCALER		THROUGH-HOLE	20	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1						IN-LINE				2.54 mm				Tin/Lead (Sn/Pb)	DUAL		R-PDIP-T20		5.08 mm	7.62 mm	Not Qualified				e0	26.4 mm	KA21
KA2187	Samsung	PRESCALER		THROUGH-HOLE	20	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1						IN-LINE				2.54 mm					DUAL		R-PDIP-T20		5.08 mm	7.62 mm	Not Qualified					26.4 mm	KA21

Prescaler & Multivibrators

Prescalers and multivibrators are electronic circuits used in digital systems for various purposes.

A prescaler is a digital circuit that divides the frequency of an input signal by a certain factor to produce a lower frequency output signal. Prescalers are used in frequency synthesizers, where a high-frequency signal needs to be divided down to a lower frequency for further processing. Prescalers can be designed using various technologies, including TTL, CMOS, and FPGAs.

A multivibrator is a digital circuit that can generate a square wave output signal with a specified frequency and duty cycle. Multivibrators can be classified into two types: astable multivibrators and monostable multivibrators. Astable multivibrators can generate a continuous square wave output signal without any external triggering, while monostable multivibrators can generate a single pulse output signal in response to an external trigger signal.

Astable multivibrators are commonly used in digital systems to generate clock signals for synchronous circuits. They can also be used in digital signal processing applications, such as frequency modulation and pulse width modulation.

Monostable multivibrators are commonly used in digital systems to generate pulse signals for timing and control purposes. They can also be used in electronic circuits for pulse shaping and pulse stretching.

Prescalers and multivibrators are essential components of digital systems and can be found in many electronic devices, such as computers, mobile phones, and digital cameras.