Data Sheet
SN74LVC157A-Q1 Automotive Quadruple 2-Line to 1-Line Data Selector/Multiplexer
1 Features
- Qualified for automotive applications
- ESD protection exceeds 2000V per
MIL-STD-883, method 3015 - Operates from 2V to 3.6V
- Inputs accept voltages to 5.5V
- Max tpd of 5.4ns at 3.3V
- Typical VOLP (output ground bounce) < 0.8V at VCC = 3.3V, TA = 25°C
- Typical VOHV (output VOH undershoot) > 2V at VCC = 3.3V, TA = 25°C
2 Description
The SN74LVC157A quadruple 2-line to 1-line data selector/multiplexer is designed for 2.7V to 3.6V VCC operation.
Package Information
| PART NUMBER | PACKAGE(1) | PACKAGE SIZE(2) | BODY SIZE(3) |
|---|---|---|---|
| SN74LVC157A-Q1 | BQB (WQFN, 16) | 3.5mm × 2.5mm | 3.5mm × 2.5mm |
| D (SOIC, 16) | 9.90 mm × 6mm | 9.90 mm × 3.90 mm | |
| PW (TSSOP, 16) | 5.00 mm × 6.4mm | 5.00 mm × 4.40 mm |
(1) For more information, see Mechanical, Packaging, and Orderable Information.
(2) The package size (length × width)
is a nominal value and includes pins, where applicable.
(3) The body size (length × width) is
a nominal value and does not include pins.
Logic Diagram (Positive Logic)3 Pin Configuration and Functions
Figure 3-1 SN74LVC157A-Q1 D or PW Package, 16-Pin SOIC or TSSOP (Top
View)
Figure 3-2 SN74LVC157A-Q1 BQB Package, 16-Pin WQFN (Top View)Table 3-1 Pin Functions
| PIN | TYPE(1) | DESCRIPTION | |
|---|---|---|---|
| NAME | NO. | ||
| A/B | 1 | I | Address select |
| 1A | 2 | I | Channel 1, data input A |
| 1B | 3 | I | Channel 1, data input B |
| 1Y | 4 | O | Channel 1, data output |
| 2A | 5 | I | Channel 2, data input A |
| 2B | 6 | I | Channel 2, data input B |
| 2Y | 7 | O | Channel 2, data output |
| GND | 8 | G | Ground |
| 3Y | 9 | O | Channel 3, data output |
| 3B | 10 | I | Channel 3, data input B |
| 3A | 11 | I | Channel 3, data input A |
| 4Y | 12 | O | Channel 4, data output |
| 4B | 13 | I | Channel 4, data input B |
| 4A | 14 | I | Channel 4, data input A |
| G | 15 | I | Output strobe, active low |
| VCC | 16 | P | Positive supply |
| Thermal pad(2) | — | The thermal pad can be connected to GND or left floating. Do not connect to any other signal or supply. | |
(1) Signal Types: I = Input, O =
Output, I/O = Input or Output, P = Power, G = Ground.
(2) WBQB package only.
