74HC(T)157: Quad 2-input multiplexer
The 74HC157; 74HCT157 is a high-speed Si-gate CMOS device and is pin compatible with Low-power Schottky TTL. It is 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 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 74HC/HCT157. 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 74HC/HCT157 is 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 × (1I1 × S + 1I0 × S)
2Y = E × (2I1 × S + 2I0 × S)
3Y = E × (3I1 × S + 3I0 × S)
4Y = E × (4I1 × S + 4I0 × S)
The 74HC/HCT157 is identical to the 74HC158 but has non-inverting (true) outputs.
74HC_T_157: Product Block Diagram
Outline 3d SOT338-1
Data Sheets (1)
| Name/Description | Modified Date |
|---|---|
| Quad 2-input multiplexer (REV 8.0) PDF (195.0 kB) 74HC_HCT157 [English] | 28 Dec 2015 |
Application Notes (2)
| Name/Description | Modified Date |
|---|---|
| Live Insertion Aspects of Philips Logic Families (REV 1.0) PDF (73.0 kB) AN252 [English] | 13 Mar 2013 |
| Pin FMEA 74HC/74HCT family (REV 1.0) PDF (51.0 kB) AN11044 [English] | 16 Mar 2011 |
Users Guides (1)
| Name/Description | Modified Date |
|---|---|
| HC/T User Guide (REV 1.0) PDF (508.0 kB) HCT_USER_GUIDE [English] | 01 Nov 1997 |
Selector Guides (2)
| Name/Description | Modified Date |
|---|---|
| ロジック製品セレクションガイド... (REV 1.0) PDF (38.3 MB) LOGIC_SELECTION_GUIDE_2015_JP [English] | 19 Nov 2015 |
| Logic selection guide 2016 (REV 1.1) PDF (15.3 MB) 75017285 [English] | 08 Jan 2015 |
Package Information (4)
| Name/Description | Modified Date |
|---|---|
| plastic dual in-line compatible thermal enhanced very thin quad flat package; no leads; 16 terminals; body 2.5 x 3.5 x... (REV 1.1) PDF (191.0 kB) SOT763-1 [English] | 30 May 2016 |
| plastic small outline package; 16 leads; body width 3.9 mm (REV 1.0) PDF (192.0 kB) SOT109-1 [English] | 08 Feb 2016 |
| plastic shrink small outline package; 16 leads; body width 5.3 mm (REV 1.0) PDF (306.0 kB) SOT338-1 [English] | 08 Feb 2016 |
| plastic thin shrink small outline package; 16 leads; body width 4.4 mm (REV 1.0) PDF (300.0 kB) SOT403-1 [English] | 08 Feb 2016 |
Packing (2)
| Name/Description | Modified Date |
|---|---|
| DHVQFN16; Reel pack, SMD, 7" Q1/T1 standard product orientation Orderable part number ending ,115 or... (REV 2.0) PDF (191.0 kB) SOT763-1_115 [English] | 05 Jul 2016 |
| TSSOP16; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or... (REV 1.0) PDF (218.0 kB) SOT403-1_118 [English] | 08 Apr 2013 |
Supporting Information (4)
| Name/Description | Modified Date |
|---|---|
| Footprint for reflow soldering (REV 1.0) PDF (9.0 kB) SO-SOJ-REFLOW [English] | 08 Oct 2009 |
| Footprint for wave soldering (REV 1.0) PDF (8.0 kB) SO-SOJ-WAVE [English] | 08 Oct 2009 |
| Footprint for reflow soldering (REV 1.0) PDF (16.0 kB) SSOP-TSSOP-VSO-REFLOW [English] | 08 Oct 2009 |
| Footprint for wave soldering (REV 1.0) PDF (16.0 kB) SSOP-TSSOP-VSO-WAVE [English] | 08 Oct 2009 |
IBIS Model
- 74HC157 IBIS model (REV 1.0) ibs HC157 11/3/2015
- 74HCT157 IBIS model (REV 1.0) ibs HCT157 11/3/2015
Ordering Information
| Product | Status |
|---|---|
| 74HC157D | Active |
| 74HCT157PW | Active |
| 74HCT157BQ | Active |
| 74HCT157D | Active |
| 74HC157DB | Active |
| 74HC157BQ | Active |
| 74HC157PW | Active |
| 74HCT157DB | Active |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 74HCT157BQ |  | SOT763-1 | Reel 7" Q1/T1 | Active | 74HCT157BQ,115 (9352 944 24115) | HCT157 | 74HCT157BQ |    | Always Pb-free | 84.9 | 6.62 | 1.51E8 | 1 | 1 | |
| 74HCT157PW |  | SOT403-1 | SSOP-TSSOP-VSO-WAVE | Reel 13" Q1/T1 | Active | 74HCT157PW,118 (9351 885 40118) | HCT157 | 74HCT157PW | | week 10, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
| Bulk Pack | Active | 74HCT157PW,112 (9351 885 40112) | HCT157 | 74HCT157PW | | week 10, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 | ||||
| 74HCT157DB | | SOT338-1 | SSOP-TSSOP-VSO-REFLOW
SSOP-TSSOP-VSO-WAVE SSOP-TSSOP-VSO-REFLOW SSOP-TSSOP-VSO-WAVE | Reel 13" Q1/T1 | Active | 74HCT157DB,118 (9351 885 60118) | HCT157 | 74HCT157DB |  | week 12, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
| Bulk Pack | Active | 74HCT157DB,112 (9351 885 60112) | HCT157 | 74HCT157DB | | week 12, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 | ||||
| 74HCT157D |  | SOT109-1 | SO-SOJ-REFLOW
SO-SOJ-WAVE SO-SOJ-REFLOW SO-SOJ-WAVE | Reel 13" Q1/T1 CECC | Active | 74HCT157D,653 (9337 137 50653) | 74HCT157D | 74HCT157D | | week 12, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
| Bulk Pack, CECC | Active | 74HCT157D,652 (9337 137 50652) | 74HCT157D | 74HCT157D | | week 12, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 | ||||
| 74HC157BQ | | SOT763-1 | Reel 7" Q1/T1 | Active | 74HC157BQ,115 (9352 944 23115) | HC157 | 74HC157BQ | | Always Pb-free | 84.9 | 6.62 | 1.51E8 | 1 | 1 | |
| 74HC157PW | | SOT403-1 | SSOP-TSSOP-VSO-WAVE | Reel 13" Q1/T1 | Active | 74HC157PW,118 (9351 868 80118) | HC157 | 74HC157PW | | week 10, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
| Bulk Pack | Active | 74HC157PW,112 (9351 868 80112) | HC157 | 74HC157PW | | week 10, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 | ||||
| 74HC157DB | | SOT338-1 | SSOP-TSSOP-VSO-REFLOW
SSOP-TSSOP-VSO-WAVE SSOP-TSSOP-VSO-REFLOW SSOP-TSSOP-VSO-WAVE | Reel 13" Q1/T1 | Active | 74HC157DB,118 (9351 868 70118) | HC157 | 74HC157DB | | week 12, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
| Bulk Pack | Active | 74HC157DB,112 (9351 868 70112) | HC157 | 74HC157DB | | week 12, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 | ||||
| 74HC157D | | SOT109-1 | SO-SOJ-REFLOW
SO-SOJ-WAVE SO-SOJ-REFLOW SO-SOJ-WAVE | Reel 13" Q1/T1 CECC | Active | 74HC157D,653 (9337 137 40653) | 74HC157D | 74HC157D | | week 35, 2004 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
| Bulk Pack, CECC | Active | 74HC157D,652 (9337 137 40652) | 74HC157D | 74HC157D | | week 35, 2004 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
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