Texas Instruments 74ABT series SN74ABT646ADW, 8-bit non-inverting transceiver with 3-state outputs, 4.5V-5.5V supply, 32mA/64mA drive, -40°C to 85°C, 24-SOIC wide-body package.
| Parameter | Value |
|---|---|
| Series | 74ABT |
| Logic type | Transceiver, Non-Inverting |
| Output type | 3-State |
| Mounting | Surface Mount |
| Supply voltage | 4.5V ~ 5.5V |
| Current - output high, low | 32mA, 64mA |
| Operating temperature | -40°C ~ 85°C (TA) |
| Package | Tube |
| Case | 24-SOIC (0.295\", 7.50mm Width) |
| Number of elements | 1 |
| Number of bits per element | 8 |
The wide-body 24-SOIC (0.295", 7.50 mm width) footprint is a standard for 8-bit transceivers and registers, making it a drop-in for many 74ABT/74F/74ALS sockets.
For dual-sourcing resilience, the 74ABT2245 family (also a non-inverting transceiver in the same 24-SOIC footprint) is a functional cross-reference worth qualifying if the BOM needs a second source.
Pricing impacts BOM cost and sourcing decisions.
Stock availability determines if the part can be procured without lead time delay.
Pinout is critical for PCB layout and compatibility.
Knowing replacements ensures continuity if the part becomes obsolete.
Operating temperature range determines suitability for the application environment.
Cross-compatibility avoids redesign costs.