The 54ACT16827 and 74ACT16827 are members of the Texas Instruments Widebus family. They are 20-bit buffers/drivers with 3-state outputs. Inputs are TTL-voltage compatible. 3-state outputs drive bus lines directly. Flow-through architecture optimizes PCB layout. Distributed VCC and GND pin configuration minimizes high-speed switching noise. EPIC (Enhanced-Performance Implanted CMOS) 1-µm process. Typical latch-up immunity at 125°C is 500 mA. Package options include plastic 300-mil shrink small-outline (DL) packages using 25-mil center-to-center pin spacings and 380-mil fine-pitch ceramic flat (WD) packages using 25-mil center-to-center pin spacings.
The document details the electrical characteristics of the 54ACT16827 and 74ACT16827, which are noninverting 20-bit buffers composed of two 10-bit sections. These devices feature separate output-enable signals for each section, allowing independent control of the outputs.
| Supply voltage range (54ACT16827) | 4.5 V to 5.5 V |
|---|---|
| Operating temperature range (54ACT16827) | -55°C to 125°C |
| High-level output current | 24 mA |
| Low-level output current | -24 mA |
| Number of bits | 20-bit |
Each 10-bit buffer section has two separate output-enable signals.
The device has a typical latch-up immunity of 500 mA at 125°C.