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74AC646 Datasheet Octal Transceiver/register

Manufacturer: Fairchild (now onsemi)

Overview: 74AC646 • 74ACT646 Octal Transceiver/Register with 3-STATE Outputs November 1988 Revised December 1998 74AC646 • 74ACT646 Octal Transceiver/Register with 3-STATE.

General Description

The AC/ACT646 consist of registered bus transceiver circuits, with outputs, D-type flip-flops and control circuitry providing multiplexed transmission of data directly from the input bus or from the internal storage registers.

Data on the A or B bus will be loaded into the respective registers on the LOW-to-HIGH transition of the appropriate clock pin (CPAB or CPBA).

The four fundamental data handling functions available are illustrated in Figure 1, Figure 2, Figure 3, and Figure 4.

Key Features

  • s Independent registers for A and B buses s Multiplexed real-time and stored data transfers s 3-STATE outputs s 300 mil dual-in-line package s Outputs source/sink 24 mA s ACT646 has TTL compatible inputs Ordering Code: Order Number 74AC646SC 74AC646SPC 74ACT646SPC Package Number M24B N24C N24C Package.

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