Texas Instruments 74ALS series, SN74ALS20ANSR, dual 4-input NAND gate, 12.5 ns propagation delay at 5V/50pF, 4.5V-5.5V supply, 0°C to 70°C, 14-SOIC surface mount.
| Parameter | Value |
|---|---|
| Series | 74ALS |
| Logic type | NAND Gate |
| Mounting type | Surface Mount |
| Voltage | 4.5V ~ 5.5V |
| Current - output high, low | 400µA, 8mA |
| Number of inputs | 4 |
| Operating temperature | 0°C ~ 70°C |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Case | 14-SOIC (0.209\", 5.30mm Width) |
| Number of circuits | 2 |
| Input logic level - low | 0.8V |
| Input logic level - high | 2V |
| Max propagation delay @ v, max CL | 12.5ns @ 5V, 50pF |
The 12.5 ns max propagation delay at 5 V, 50 pF sets the timing budget for address decoding or control signal gating.
The SN74ALS20ANSR carries an Active product status and is ROHS3 compliant. No last-time-buy or end-of-life notices are on record.
Yes, the SN74ALS20ANSR is ROHS3 compliant.
The SN74ALS20ANSR is the surface-mount 14-SOIC variant; the SN74ALS20AN is the through-hole DIP version. Both are dual 4-input NAND gates with identical electrical specs — the package is the only difference.
A functional equivalent within the same 74ALS series is the SN74ALS38BNSR — also a NAND gate in 14-SOIC, but with open-collector outputs and 33 ns propagation delay. For a direct pin-compatible drop-in, stick with the SN74ALS20ANSR.