Data Sheet
SN74ACT139-Q1 Automotive Dual 2- to 4-Bit Decoders/Demultiplexers with TTL-Compatible Inputs
1 Features
- AEC-Q100 qualified for automotive applications:
- Device temperature grade 1: -40°C to +125°C
- Device HBM ESD classification level 2
- Device CDM ESD classification level C4B
- Available in wettable flank QFN package
- Operating voltage range of 4.5V to 5.5V
- TTL-compatible inputs
- Continuous ±24mA output drive at 5V
- Supports up to ±75mA
output drive at 5V
in short bursts - Drives 50Ω transmission lines
- Fast operation with delay of 10.2ns max
2 Applications
- Memory device selection with shared data bus
- Reduce required number of outputs for chip select applications
- Route data
3 Description
The SN74ACT139-Q1 contains two two-to-four decoders with one active low output strobe (G). When the strobe input is inactive (G = HIGH), the outputs for that channel are all forced into the high state. When strobe input is active (G = LOW), only the selected output is low while all others are high.
Device Information
| PART NUMBER | PACKAGE(1) | PACKAGE SIZE(2) | BODY SIZE(3) |
|---|---|---|---|
| SN74ACT139-Q1 | BQB (WQFN, 16) | 3.5mm × 2.5mm | 3.5mm × 2.5mm |
| PW (TSSOP , 16) | 5mm x 6.4mm | 5mm x 4.4mm |
(1) For more information, see
Section 11.
(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.
Functional Diagram