Texas Instruments 74AHC series, SN74AHC240DW, Buffer, Inverting, 3-State output, 2V to 5.5V supply, 8mA output drive, 20-SOIC package, -40°C to 85°C operating temperature.
| Parameter | Value |
|---|---|
| Series | 74AHC |
| Logic type | Buffer, Inverting |
| Output type | 3-State |
| Mounting | Surface Mount |
| Supply voltage | 2V ~ 5.5V |
| Current - output high, low | 8mA, 8mA |
| Operating temperature | -40°C ~ 85°C (TA) |
| Package | Tube |
| Case | 20-SOIC (0.295\", 7.50mm Width) |
| Number of elements | 2 |
| Number of bits per element | 4 |
The Texas Instruments SN74AHC240DW is an octal inverting buffer with 3-state outputs from the 74AHC family.
Two independent buffer elements, each handling four bits. The inverting logic means the output is the complement of the input — a detail that matters if you are replacing a non-inverting part and the firmware expects active-high enables.
No — the product status is Active. No discontinuation notice or last-time-buy has been issued for this order code.
Yes, within limits — the 2V to 5.5V supply range allows the part to translate between 3.3V and 5V domains, but the 8mA output drive and inverting logic must match the target bus requirements.
The AHCT variant has TTL-compatible input thresholds, while the AHC version uses CMOS thresholds. For a 5V TTL bus the AHCT is the drop-in; for a pure CMOS or 3.3V rail the AHC is the correct choice. Both share the same 20-SOIC footprint.