Texas Instruments 74AC series CD74AC646M, 8-bit non-inverting transceiver with 3-state outputs, 24-SOIC wide-body package, 1.5V to 5.5V supply, 24 mA output drive, -55°C to 125°C military temperature range.
| Parameter | Value |
|---|---|
| Series | 74AC |
| Logic type | Transceiver, Non-Inverting |
| Output type | 3-State |
| Mounting type | Surface Mount |
| Voltage | 1.5V ~ 5.5V |
| Current - output high, low | 24mA, 24mA |
| Operating temperature | -55°C ~ 125°C (TA) |
| Package | Tube |
| Case | 24-SOIC (0.295\", 7.50mm Width) |
| Number of elements | 1 |
| Number of bits per element | 8 |
The CD74AC646M is an 8-bit non-inverting transceiver with 3-state outputs from TI's 74AC logic family. It sits between the slower 74LS and the faster 74ABT/74LVTH families, offering a balanced speed-power point for bus-oriented data flow. The 24 mA symmetric output drive at both high and low levels is enough to drive a heavily loaded backplane or a memory-address bus with a dozen loads.
Yes, the CD74AC646M is listed as ROHS3 Compliant.
For a drop-in replacement that keeps the wide supply range and military temperature rating, the CD74AC646M itself is the part to source.