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74AHC(T)157: Quad 2-input multiplexer (Based on PIP 74AHC_AHCT157)

The 74AHC/AHCT157 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 74AHC/AHCT157 are quad 2-input multiplexer which select 4 bits of data from two sources under the control of a common data select input (S). 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 74AHC/AHCT157. 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 74AHC/AHCT157 is logic implementation of a 4-pole, 2-position switch, where the position of the switch is determine by the logic levels applied to S.

The logic equations are:

The 74AHC/AHCT157 is identical to the 74AHC/AHCT158 but has non-inverting (true) outputs.

74AHC_T_157: Product Block Diagram

Outline 3d SOT403-1

Data Sheets (1)

Application Notes (5)

Brochures (2)

Selector Guides (2)

Package Information (3)

Packing (3)

Supporting Information (3)

Ordering Information

Package Information

Product ID	Package Description	Outline Version	Reflow/Wave Soldering	Packing	Product Status	Part NumberOrdering code(12NC)	Marking	Chemical Content	RoHS / Pb Free / RHF	LeadFree Conversion Date	EFR	IFR(FIT)	MTBF(hour)	MSL	MSL LF
74AHCT157BQ		SOT763-1		Reel 7" Q1/T1	Active	74AHCT157BQ,115 (9352 855 71115)	AHT157	74AHCT157BQ		Always Pb-free	84.9	6.62	1.51E8	1	1
74AHCT157D		SOT109-1	SO-SOJ-REFLOW SO-SOJ-WAVE SO-SOJ-REFLOW SO-SOJ-WAVE	Reel 13" Q1/T1	Active	74AHCT157D,118 (9352 640 00118)	74AHCT157D	74AHCT157D		Always Pb-free	84.9	6.62	1.51E8	1	1
				Bulk Pack	Active	74AHCT157D,112 (9352 640 00112)	74AHCT157D	74AHCT157D		Always Pb-free	84.9	6.62	1.51E8	1	1
74AHC157BQ		SOT763-1		Reel 7" Q1/T1	Active	74AHC157BQ,115 (9352 855 69115)	AHC157	74AHC157BQ		Always Pb-free	84.9	6.62	1.51E8	1	1
74AHCT157PW		SOT403-1	SSOP-TSSOP-VSO-WAVE	Reel 13" Q1/T1	Active	74AHCT157PW,118 (9352 640 01118)	AHCT157	74AHCT157PW		week 10, 2005	84.9	6.62	1.51E8	1	1
				Bulk Pack	Active	74AHCT157PW,112 (9352 640 01112)	AHCT157	74AHCT157PW		week 10, 2005	84.9	6.62	1.51E8	1	1
74AHC157D		SOT109-1	SO-SOJ-REFLOW SO-SOJ-WAVE SO-SOJ-REFLOW SO-SOJ-WAVE	Reel 13" Q1/T1	Active	74AHC157D,118 (9352 639 98118)	74AHC157D	74AHC157D		Always Pb-free	84.9	6.62	1.51E8	1	1
				Bulk Pack	Active	74AHC157D,112 (9352 639 98112)	74AHC157D	74AHC157D		Always Pb-free	84.9	6.62	1.51E8	1	1
74AHC157PW		SOT403-1	SSOP-TSSOP-VSO-WAVE	Reel 13" Q1/T1	Active	74AHC157PW,118 (9352 639 99118)	AHC157	74AHC157PW		week 10, 2005	84.9	6.62	1.51E8	1	1
				Bulk Pack	Active	74AHC157PW,112 (9352 639 99112)	AHC157	74AHC157PW		week 10, 2005	84.9	6.62	1.51E8	1	1