74HC/HCT157

Selection guide

Datasheet

74HC/HCT157
(Product Specification)
01-Dec-90, 7 pages, 43 kB

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74HC/HCT157 - Quad 2-input multiplexer

General description
Features
Products/packages
Quality/reliability/chemical content

Pricing/ordering/availability
Samples
Discontinued information
Applications
Block diagrams/pinning

Design support
Parametrics/similar products
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Disclaimers

All information hereunder is subject to the subsequent disclaimers

General description

The 74HC/HCT157 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 74HC/HCT157 are quad 2-input multiplexers which select 4 bits of data from two sources under the control of a common data select input (S). The four outputs present the selected data in the true (non-inverted) form. The enable input (E) is active LOW. When E is HIGH, all of the outputs (1Y to 4Y) are forced LOW regardless of all other input conditions.

Moving the data from two groups of registers to four common output buses is a common use of the '157'. The state of the common data select input (S) determines the particular register from which the data comes. It can also be used as function generator.

The device is useful for implementing highly irregular logic by generating any four of the 16 different functions of two variables with one variable common.

The '157' is the logic implementation of a 4-pole, 2-position switch, where the position of the switch is determined by the logic levels applied to S.

The logic equations are:

1Y = E.(1l₁.S + 1l₀.S)
2Y = E.(2l₁.S + 2l0₀.S)
3Y = E.(3l₁.S + 3l₀.S)
4Y = E.(4l₁.S + 4l₀.S)

The '157' is identical to the '158' but has non-inverting (true) outputs.

Features

Non-inverting data path
Output capability: standard
I_CC category: MSI

Products/packages

Type number	Orderable part number	Ordering code (12NC)	Product status	Package	Packing	Marking
74HC157D	74HC157D,652	9337 137 40652	Volume production	SOT109	Bulk Pack, CECC	Standard Marking
74HC157D	74HC157D,653	9337 137 40653	Volume production	SOT109	Reel Pack, SMD, 13", CECC	Standard Marking
74HC157DB	74HC157DB,112	9351 868 70112	Volume production	SOT338-1 (SSOP16)	Tube	Standard Marking
74HC157DB	74HC157DB,118	9351 868 70118	Volume production	SOT338-1 (SSOP16)	Reel Pack, SMD, 13"	Standard Marking
74HC157N	74HC157N,652	9336 693 40652	Volume production	SOT38-4 (DIP16)	Bulk Pack, CECC	Standard Marking
74HC157N/S208	74HC157N/S208,112	9337 854 30112	Volume production	SOT38-4 (DIP16)	Bulk Pack	Standard Marking
74HC157PW	74HC157PW,112	9351 868 80112	Volume production	SOT403-1 (TSSOP16)	Tube	Standard Marking
74HC157PW	74HC157PW,118	9351 868 80118	Volume production	SOT403-1 (TSSOP16)	Reel Pack, SMD, 13"	Standard Marking
74HCT157D	74HCT157D,652	9337 137 50652	Volume production	SOT109	Bulk Pack, CECC	Standard Marking
74HCT157D	74HCT157D,653	9337 137 50653	Volume production	SOT109	Reel Pack, SMD, 13", CECC	Standard Marking
74HCT157DB	74HCT157DB,112	9351 885 60112	Volume production	SOT338-1 (SSOP16)	Tube	Standard Marking
74HCT157DB	74HCT157DB,118	9351 885 60118	Volume production	SOT338-1 (SSOP16)	Reel Pack, SMD, 13"	Standard Marking
74HCT157N	74HCT157N,652	9336 699 70652	Volume production	SOT38-4 (DIP16)	Bulk Pack, CECC	Standard Marking
74HCT157PW	74HCT157PW,112	9351 885 40112	Volume production	SOT403-1 (TSSOP16)	Tube	Standard Marking
74HCT157PW	74HCT157PW,118	9351 885 40118	Volume production	SOT403-1 (TSSOP16)	Reel Pack, SMD, 13"	Standard Marking
74HCT157PW/C	74HCT157PW/C,118	9352 883 94118	Volume production	SOT403-1 (TSSOP16)	Reel Pack, SMD, 13"	Standard Marking
74HCT157U	74HCT157U,029	9338 249 50029	Volume production	Uncased die

Quality/reliability/chemical content

Type number	Orderable part number	Chemical content	Leadfree Conversion date	IRF (FIT)	MTBF (hours)	MSL
74HC157D	74HC157D,652	74HC157D	week 35, 2004	6,62	1,51E+08	1
74HC157D	74HC157D,653	74HC157D	week 35, 2004	6,62	1,51E+08	1
74HC157DB	74HC157DB,112	74HC157DB	week 12, 2005	6,62	1,51E+08	1
74HC157DB	74HC157DB,118	74HC157DB	week 12, 2005	6,62	1,51E+08	1
74HC157N	74HC157N,652	74HC157N	Always Pb-free	6,62	1,51E+08	NA
74HC157N/S208	74HC157N/S208,112	74HC157N_S208	Always Pb-free	6,62	1,51E+08	NA
74HC157PW	74HC157PW,112	74HC157PW	week 10, 2005	6,62	1,51E+08	1
74HC157PW	74HC157PW,118	74HC157PW	week 10, 2005	6,62	1,51E+08	1
74HCT157D	74HCT157D,652	74HCT157D	week 12, 2005	6,62	1,51E+08	1
74HCT157D	74HCT157D,653	74HCT157D	week 12, 2005	6,62	1,51E+08	1
74HCT157DB	74HCT157DB,112	74HCT157DB	week 12, 2005	6,62	1,51E+08	1
74HCT157DB	74HCT157DB,118	74HCT157DB	week 12, 2005	6,62	1,51E+08	1
74HCT157N	74HCT157N,652	74HCT157N	Always Pb-free	6,62	1,51E+08	NA
74HCT157PW	74HCT157PW,112	74HCT157PW	week 10, 2005	6,62	1,51E+08	1
74HCT157PW	74HCT157PW,118	74HCT157PW	week 10, 2005	6,62	1,51E+08	1
74HCT157PW/C	74HCT157PW/C,118	74HCT157PW_C	Always Pb-free	6,62	1,51E+08	1
74HCT157U	74HCT157U,029	74HCT157U	week 18, 2005	6,62	1,51E+08	NA

Quality and reliability disclaimer

Pricing/ordering/availability

Type number	Ordering code(12NC)	Orderable part number	Indicative price/unit($)	Region	Distributor	In stock	Order quantity	Inventory date	Buy online	Samples
74HC157D	9337 137 40652	74HC157D,652	0.2300	NA	NEWARK	504		11/20/2009	Buy online	not available
				NA	ARROW ELECTRONICS	869		11/19/2009	Buy online
				NA	DIGI-KEY CORPORATION	2,120		11/20/2009	Buy online
				NA	FUTURE ELECTRONICS	700		11/19/2009	Buy online
				NA	AVNET ELECTRONICS MARKETING	1,928		11/19/2009	Buy online
74HC157D	9337 137 40653	74HC157D,653	0.2300	NA	NEWARK	504		11/20/2009	Buy online	not available
				NA	ARROW ELECTRONICS	869		11/19/2009	Buy online
				NA	AVNET ELECTRONICS MARKETING	714		11/19/2009	Buy online
				NA	FUTURE ELECTRONICS	1,975		11/19/2009	Buy online
				NA	ARROW ELECTRONICS	5,000		11/19/2009	Buy online
				ASIA	WPI	5,000	2500	11/19/2009	Buy online
74HC157DB	9351 868 70112	74HC157DB,112	0.2600	NA	DIGI-KEY CORPORATION	6,131		11/20/2009	Buy online	not available
74HC157DB	9351 868 70118	74HC157DB,118	0.2600	NA	MOUSER ELECTRONICS	92		11/20/2009	Buy online	Order samples
				NA	FUTURE ELECTRONICS	100		11/19/2009	Buy online
				NA	MOUSER ELECTRONICS	92		11/20/2009	Buy online
74HC157N	9336 693 40652	74HC157N,652	0.2400	NA	NEWARK	249		11/20/2009	Buy online	Order samples
				NA	ARROW ELECTRONICS	1,525		11/19/2009	Buy online
				NA	FUTURE ELECTRONICS	550		11/19/2009	Buy online
				NA	AVNET ELECTRONICS MARKETING	6,772		11/19/2009	Buy online
74HC157N/S208	9337 854 30112	74HC157N/S208,112								not available
74HC157PW	9351 868 80112	74HC157PW,112	0.2300							not available
74HC157PW	9351 868 80118	74HC157PW,118	0.2300							not available
74HCT157D	9337 137 50652	74HCT157D,652	0.2300	NA	ARROW ELECTRONICS	201		11/19/2009	Buy online	not available
				NA	DIGI-KEY CORPORATION	1,811		11/20/2009	Buy online
				NA	FUTURE ELECTRONICS	1,000		11/19/2009	Buy online
				NA	AVNET ELECTRONICS MARKETING	2,550		11/19/2009	Buy online
74HCT157D	9337 137 50653	74HCT157D,653	0.2300	NA	ARROW ELECTRONICS	201		11/19/2009	Buy online	not available
				ASIA	SAC - Taiwan	yes	2500	11/20/2009	Buy online
74HCT157DB	9351 885 60112	74HCT157DB,112	0.2600	NA	DIGI-KEY CORPORATION	2,206		11/20/2009	Buy online	not available
				NA	MOUSER ELECTRONICS	102		11/20/2009	Buy online
				NA	MOUSER ELECTRONICS	102		11/20/2009	Buy online
74HCT157DB	9351 885 60118	74HCT157DB,118	0.2600							not available
74HCT157N	9336 699 70652	74HCT157N,652	0.2600	NA	NEWARK	645		11/20/2009	Buy online	not available
				NA	ARROW ELECTRONICS	1,625		11/19/2009	Buy online
				NA	DIGI-KEY CORPORATION	631		11/20/2009	Buy online
				NA	FUTURE ELECTRONICS	75		11/19/2009	Buy online
				NA	AVNET ELECTRONICS MARKETING	1,950		11/19/2009	Buy online
74HCT157PW	9351 885 40112	74HCT157PW,112	0.2500							not available
74HCT157PW	9351 885 40118	74HCT157PW,118	0.2500	NA	FUTURE ELECTRONICS	100		11/19/2009	Buy online	not available
74HCT157PW/C	9352 883 94118	74HCT157PW/C,118								not available
74HCT157U	9338 249 50029	74HCT157U,029								not available

Applications

Thin and thick film circuits
General purpose fast switching applications.

Design support

Application Notes

AN99055; TDA8798HL - DUAL 8-BIT A/D CONVERTER WITH DPGA DEMONSTRATION BOARD (1999-10-01)

Support Documents

HCT_USER_GUIDE; HC/T User Guide (1997-11-01)

Parametrics/similar products

Type number	Package	Description	Propagation Delay(ns)	Voltage	No. of Pins	Power Dissipation Considerations	Logic Switching Levels	Output Drive Capability
74HC157D	SOT109	Quad 2-Input Multiplexer	11@5V	2.0-6.0 V	16	Low Power or Battery Applications	CMOS	+/- 5.2 mA
74HC157DB	SOT338-1 (SSOP16)	Quad 2-Input Multiplexer	11@5V	2.0-6.0 V	16	Low Power or Battery Applications	CMOS	+/- 5.2 mA
74HC157N	SOT38-4 (DIP16)	Quad 2-Input Multiplexer	11@5V	2.0-6.0 V	16	Low Power or Battery Applications	CMOS	+/- 5.2 mA
74HC157N/S208	SOT38-4 (DIP16)	Quad 2-Input Multiplexer	11@5V	2.0-6.0 V	16	Low Power or Battery Applications	CMOS	+/- 5.2 mA
74HC157PW	SOT403-1 (TSSOP16)	Quad 2-Input Multiplexer	11@5V	2.0-6.0 V	16	Low Power or Battery Applications	CMOS	+/- 5.2 mA
74HCT157D	SOT109	Quad 2-Input Multiplexer; TTL Enabled	13	4.5-5.5V	16	Low Power	TTL	+/- 4 mA
74HCT157DB	SOT338-1 (SSOP16)	Quad 2-Input Multiplexer; TTL Enabled	13	4.5-5.5V	16	Low Power	TTL	+/- 4 mA
74HCT157N	SOT38-4 (DIP16)	Quad 2-Input Multiplexer; TTL Enabled	13	4.5-5.5V	16	Low Power	TTL	+/- 4 mA
74HCT157PW	SOT403-1 (TSSOP16)	Quad 2-Input Multiplexer; TTL Enabled	13	4.5-5.5V	16	Low Power	TTL	+/- 4 mA
74HCT157PW/C	SOT403-1 (TSSOP16)	Quad 2-Input Multiplexer; TTL Enabled	13	4.5-5.5V	16	Low Power	TTL	+/- 4 mA
74HCT157U	Uncased die	Quad 2-Input Multiplexer; TTL Enabled	13	4.5-5.5V	16	Low Power	TTL	+/- 4 mA

Similar products
74HC/HCT157 links to the similar products page containing an overview of products that are similar in function or related to the type number(s) as listed on this page. The similar products page includes products from the same catalog tree(s), relevant selection guides and products from the same functional category.

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