Refer to the PDF data sheet for device specific package drawings
The SNx4HC157 contains four data selectors/multiplexers to select one of two data sources. All channels are controlled by the same address select (A/B) input, and strobe (G) input. A high level at the strobe terminal forces all outputs low.
PART NUMBER | PACKAGE(1) | BODY SIZE (NOM)(2) |
---|---|---|
SN74HC157 | D (SOIC, 16) | 9.90 mm × 3.90 mm |
DB (SSOP, 16) | 6.20 mm × 5.30 mm | |
N (PDIP, 16) | 19.31 mm × 6.35 mm | |
NS (SOP, 16) | 6.20 mm × 5.30 mm | |
PW (TSSOP, 16) | 5.00 mm × 4.40 mm | |
SN54HC157 | J (CDIP, 16) | 24.38 mm × 6.92 mm |
FK (LCCC, 20) | 8.89 mm × 8.45 mm | |
W (CFP, 16) | 10.16 mm × 6.73 mm |
Pin numbers shown are for the D, DB, J, N, NS, PW, and W packages.
Functional Block DiagramPIN | TYPE(1) | DESCRIPTION | |
---|---|---|---|
SOIC or TSSOP NO. | NAME | ||
1 | A/B | I | Address select |
2 | 1A | I | Channel 1, data input A |
3 | 1B | I | Channel 1, data input B |
4 | 1Y | I | Channel 1, data output |
5 | 2A | O | Channel 2, data input A |
6 | 2B | O | Channel 2, data input B |
7 | 2Y | I | Channel 2, data output |
8 | GND | — | Ground |
9 | 3Y | I | Channel 3, data output |
10 | 3B | I | Channel 3, data input B |
11 | 3A | I | Channel 3, data input A |
12 | 4Y | I | Channel 4, data output |
13 | 4B | I | Channel 4, data input B |
14 | 4A | I | Channel 4, data input A |
15 | G | I | Output strobe, active low |
16 | VCC | — | Positive supply |