MC74AC138: 1-of-8 Decoder/Demultiplexer
The MC74AC138/74ACT138 is a high-speed 1-of-8 decoder/demultiplexer. This device is ideally suited for high-speed bipolar memory chip select address decoding. The multiple input enables allow parallel expansion to a 1-of-24 decoder using just three MC74AC138/74ACT138 devices or a 1-of-32 decoder using four MC74AC138/ 74ACT138 devices and one inverter.
Features- Demultiplexing Capability
- Multiple Input Enable for Easy Expansion
- Active LOW Mutually Exclusive Outputs
- Outputs Source/Sink 24 mA
- ACT138 Has TTL Compatible Inputs
- These devices are available in Pb-free package(s). Specifications herein apply to both standard and Pb-free devices. Please see our website at www.onsemi.com for specific Pb-free orderable part numbers, or contact your local ON Semiconductor sales office or representative.
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Simulation Models (4)
Package Drawings (2)
Data Sheets (1)
Order Information
| Product | Status | Compliance | Package | MSL* | Container | Budgetary Price/Unit |
|---|
| MC74AC138DG | Active | Pb-free
Halide free | SOIC-16 | 751B-05 | 1 | Tube | 48 | $0.2533 |
| MC74AC138DR2G | Active | Pb-free
Halide free | SOIC-16 | 751B-05 | 1 | Tape and Reel | 2500 | $0.2533 |
| MC74AC138DTR2G | Active | Pb-free
Halide free | TSSOP-16 | 948F-01 | 1 | Tape and Reel | 2500 | $0.2441 |
Specifications
| Product | Channels | VCC Min (V) | VCC Max (V) | tpd Max (ns) | IO Max (mA) |
|---|
| MC74AC138DG | 1 | 2 | 6 | 9.5 | 24 |
| MC74AC138DR2G | 1 | 2 | 6 | 9.5 | 24 |
| MC74AC138DTR2G | 1 | 2 | 6 | 9.5 | 24 |
