Data Sheet
SN74AHC238-Q1Automotive 3- to 8-Line Noninverting Decoder/Demultiplexer
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 range 2V to 5.5V VCC
- Low delay, 10.5ns max (VCC = 5V, CL = 50pF)
- Latch-up performance exceeds 250mA
per JESD 17
2 Applications
- Memory device selection with shared data bus
- Reduce required number of outputs for chip select applications
- Route data
3 Description
The SN74AHC238-Q1 is a three to eight decoder with one standard output strobe (G2) and two active low output strobes (G1 and G0). When the outputs are gated by any of the strobe inputs, they are all forced into the low state. When the outputs are not disabled by the strobe inputs, only the selected output is high while all others are low.
Package
Information
| PART NUMBER | PACKAGE(1) | PACKAGE SIZE(2) | BODY SIZE (NOM)(3) |
|---|---|---|---|
| SN74AHC238-Q1 | BQB (WQFN, 16) | 3.5mm × 2.5mm | 3.5mm × 2.5mm |
| PW (TSSOP, 16) | 5mm × 6.4mm | 5mm × 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.
Logic
Diagram (Positive
Logic)