Texas Instruments 74ABT series SN74ABT16543DL, Logic Type Transceiver, Non-Inverting, 3-State Output, 4.5 V ~ 5.5 V Supply, 2 Elements, 8 Bits per Element, 32 mA / 64 mA Output Current, -40°C ~ 85°C, 56-BSSOP (0.295", 7.50mm Width) Surface Mount, Tube.
| 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 | 56-BSSOP (0.295\", 7.50mm Width) |
| Number of elements | 2 |
| Number of bits per element | 8 |
The 3-state outputs let multiple transceivers share the same bus without contention — a standard feature for backplane or memory-interface buffering. The output drive is rated 32 mA source and 64 mA sink per channel — enough to drive a heavily loaded parallel bus or a bank of LED indicators without external buffers.
This is not a part you swap on site with a screwdriver — it needs a reflow station or hot-air rework.
The two order codes share the same silicon — a 16-bit non-inverting transceiver in a 56-pin SSOP package. The difference is the shipping medium: the DL suffix ships in a Tube, while the DGGR suffix ships in Tape & Reel. The device itself is identical.
The SN74ABT2245DW is a single-element (8-bit) transceiver in a 20-pin SOIC package. It is not a pin-compatible drop-in for the 56-pin SSOP layout.