The HD74BC244A is an octal buffer/line driver with three-state outputs. It utilizes Bi-CMOS process to provide high drivability and operation equal to or better than high speed bipolar standard logic ICs. The device features low power dissipation, approximately 1/5 of high speed bipolar logic ICs at a frequency of 10 MHz. It has a 20-pin package and is a non-inverting buffer with two active low enables (1G and 2G), each controlling 4 buffers independently.
The HD74BC244A is an octal buffer/line driver with three‑state outputs, featuring low power dissipation (about one‑fifth of comparable bipolar logic) and two independent active‑low enables. It is supplied in a 20‑pin package and is intended for high‑speed logic applications.
The document provides absolute maximum ratings, recommended operating conditions, electrical characteristics, switching test methods, waveform examples, package dimensions and legal cautions. Key parameters include supply voltage ranges, operating temperature limits, propagation delays and output drive capabilities.
| Supply voltage (absolute max) | -0.5 to +7.0 V |
|---|---|
| Supply voltage (recommended) | 4.5 V – 5.5 V |
| Operating temperature | -40 °C to 85 °C |
| Input voltage (absolute max) | -0.5 to +7.5 V |
| Storage temperature | -65 °C to 150 °C |
The device can be powered from –0.5 V up to +7.0 V (absolute maximum) and is recommended to operate between 4.5 V and 5.5 V.
It operates from –40 °C to 85 °C.