74HCT123 datasheet, PDF - EEWORLD Datasheet

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74HCT123: Description8-Line To 1-Line Data Selectors/Multiplexers 16-SOIC -40 to 85; File Size127KB，24 Pages; ManufacturerNXP; Websitehttps://www.nxp.com

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74HCT123 Overview

8-Line To 1-Line Data Selectors/Multiplexers 16-SOIC -40 to 85

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74HC123; 74HCT123

Dual retriggerable monostable multivibrator with reset

Rev. 05 — 13 July 2009

Product data sheet

1. General description

The 74HC123; 74HCT123 are high-speed Si-gate CMOS devices and are pin compatible

with Low-power Schottky TTL (LSTTL). They are speciﬁed in compliance with JEDEC

standard no. 7A.

The 74HC123; 74HCT123 are dual retriggerable monostable multivibrators with output

pulse width control by three methods:

1. The basic pulse is programmed by selection of an external resistor (R

EXT

) and

capacitor (C

EXT

2. Once triggered, the basic output pulse width may be extended by retriggering the

gated active LOW-going edge input (nA) or the active HIGH-going edge input (nB). By

repeating this process, the output pulse period (nQ = HIGH, nQ = LOW) can be made

as long as desired. Alternatively an output delay can be terminated at any time by a

LOW-going edge on input nRD, which also inhibits the triggering.

3. An internal connection from nRD to the input gates makes it possible to trigger the

circuit by a HIGH-going signal at input nRD as shown in the function table.

Schmitt-trigger action in the nA and nB inputs, makes the circuit highly tolerant to slower

input rise and fall times.

The 74HC123; 74HCT123 are identical to the 74HC423; 74HCT423 but can be triggered

via the reset input.

2. Features

DC triggered from active HIGH or active LOW inputs

Retriggerable for very long pulses up to 100 % duty factor

Direct reset terminates output pulse

Schmitt-trigger action on all inputs except for the reset input

ESD protection:

HBM JESD22-A114E exceeds 2000 V

MM JESD22-A115-A exceeds 200 V

Speciﬁed from

−40 °C

to +85

°C

and from

−40 °C

to +125

°C

74HCT123 Related Products

	74HCT123	74HC123	74HC123N	74HC123BQ	74HC123PW	74HCT123PW	74HCT123N
Description	8-Line To 1-Line Data Selectors/Multiplexers 16-SOIC -40 to 85	HC/UH SERIES, DUAL MONOSTABLE MULTIVIBRATOR, PDSO16	HC/UH SERIES, DUAL MONOSTABLE MULTIVIBRATOR, PDIP16	HC/UH SERIES, DUAL MONOSTABLE MULTIVIBRATOR, PDSO16	HC/UH SERIES, DUAL MONOSTABLE MULTIVIBRATOR, PDSO16	HC/UH SERIES, DUAL MONOSTABLE MULTIVIBRATOR, PDSO16	HC/UH SERIES, DUAL MONOSTABLE MULTIVIBRATOR, PDSO16
Number of functions	-	2	2	2	2	2	2
Number of terminals	-	16	16	16	16	16	16
Maximum operating temperature	-	125 Cel	125 °C	125 °C	125 °C	125 °C	125 °C
Minimum operating temperature	-	-40 Cel	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C
surface mount	-	Yes	NO	YES	YES	YES	NO
Terminal form	-	GULL WING	THROUGH-HOLE	NO LEAD	GULL WING	GULL WING	THROUGH-HOLE
Terminal location	-	pair	DUAL	QUAD	DUAL	DUAL	DUAL
Temperature level	-	AUTOMOTIVE	AUTOMOTIVE	AUTOMOTIVE	AUTOMOTIVE	AUTOMOTIVE	AUTOMOTIVE
series	-	HC/UH	HC/UH	HC/UH	HC/UH	HCT	HCT
Output polarity	-	COMPLEMENTARY	COMPLEMENTARY	COMPLEMENTARY	COMPLEMENTARY	COMPLEMENTARY	COMPLEMENTARY
Is it lead-free?	-	-	Lead free	-	Lead free	Lead free	Lead free
Is it Rohs certified?	-	-	conform to	conform to	conform to	conform to	conform to
Maker	-	-	NXP	NXP	NXP	NXP	NXP
Parts packaging code	-	-	MO-001	QFN	TSSOP	TSSOP	MO-001
package instruction	-	-	DIP, DIP16,.3	2.50 X 3.50 MM, 0.85 MM HEIGHT, PLASTIC, MO-241, SOT-763-1, DHVQFN-16	4.40 MM, PLASTIC, MO-153, SOT-403-1, TSSOP-16	TSSOP, TSSOP16,.25	DIP, DIP16,.3
Contacts	-	-	16	16	16	16	16
Reach Compliance Code	-	-	unknow	compli	unknow	unknow	unknow
Other features	-	-	RETRIGGERABLE; TRIGGERABLE FROM CLEAR INPUT ALSO	-	RETRIGGERABLE; TRIGGERABLE FROM CLEAR INPUT ALSO	RETRIGGERABLE; TRIGGERABLE FROM CLEAR INPUT ALSO	RETRIGGERABLE; TRIGGERABLE FROM CLEAR INPUT ALSO
JESD-30 code	-	-	R-PDIP-T16	R-PQCC-N16	R-PDSO-G16	R-PDSO-G16	R-PDIP-T16
JESD-609 code	-	-	e4	e4	e4	-	e4
length	-	-	21.6 mm	3.5 mm	5 mm	5 mm	21.6 mm
Load capacitance (CL)	-	-	50 pF	-	50 pF	50 pF	50 pF
Logic integrated circuit type	-	-	MONOSTABLE MULTIVIBRATOR	MONOSTABLE MULTIVIBRATOR	MONOSTABLE MULTIVIBRATOR	MONOSTABLE MULTIVIBRATOR	MONOSTABLE MULTIVIBRATOR
Number of data/clock inputs	-	-	2	2	2	2	2
Package body material	-	-	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	-	-	DIP	HVQCCN	TSSOP	TSSOP	DIP
Encapsulate equivalent code	-	-	DIP16,.3	LCC16,.1X.14,20	TSSOP16,.25	TSSOP16,.25	DIP16,.3
Package shape	-	-	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	-	-	IN-LINE	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	IN-LINE
Peak Reflow Temperature (Celsius)	-	-	NOT SPECIFIED	260	260	260	NOT SPECIFIED
power supply	-	-	2/6 V	2/6 V	2/6 V	5 V	5 V
propagation delay (tpd)	-	-	385 ns	385 ns	385 ns	77 ns	77 ns
Certification status	-	-	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	-	-	4.7 mm	1 mm	1.1 mm	1.1 mm	4.7 mm
Maximum supply voltage (Vsup)	-	-	6 V	6 V	6 V	5.5 V	5.5 V
Minimum supply voltage (Vsup)	-	-	2 V	2 V	2 V	4.5 V	4.5 V
Nominal supply voltage (Vsup)	-	-	5 V	5 V	5 V	5 V	5 V
technology	-	-	CMOS	CMOS	CMOS	CMOS	CMOS
Terminal surface	-	-	Nickel/Palladium/Gold (Ni/Pd/Au)	NICKEL PALLADIUM GOLD	NICKEL PALLADIUM GOLD	NICKEL/PALLADIUM/GOLD (NI/PD/AU)	Nickel/Palladium/Gold (Ni/Pd/Au)
Terminal pitch	-	-	2.54 mm	0.5 mm	0.65 mm	0.65 mm	2.54 mm
Maximum time at peak reflow temperature	-	-	NOT SPECIFIED	30	30	30	NOT SPECIFIED
width	-	-	7.62 mm	2.5 mm	4.4 mm	4.4 mm	7.62 mm
Base Number Matches	-	-	1	1	1	1	1

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