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Home > Logic ICs > Bus Transceivers > Motorola MC74HC646DW IC Octal 3-state Bus Transeceivers And D Flip-Flops SOIC-24

Motorola MC74HC646DW IC Octal 3-state Bus Transeceivers And D Flip-Flops SOIC-24

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Quick Overview

MC74HC646DW Motorola Octal 3-State Bus transceivers and D Flip-Flops

Motorola MC74HC646DW IC Octal 3-state Bus Transeceivers And D Flip-Flops SOIC-24

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Details

MC74HC646DW Motorola Octal Tri-State Bus Transceiver 2-6V 500mW Surface Mount SMD SOIC-24

The MC54/74HC646 is identical in pinout to the LS646. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LSTTL outputs


Output Drive Capability: 15 LSTTL Loads

Outputs Directly Interface to CMOS, NMOS, and TTL

Operating Voltage Range: 2 to 6 V

Low Input Current: 1
µ
A

High Noise Immunity Characteristic of CMOS Devices

In Compliance with the Requirements Defined by JEDEC Standard
No. 7A

Chip Complexity: 780 FETs or 195 Equivalent Gates

The MC54/74HC646 is identical in pinout to the LS646. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LSTTL outputs. These devices are bus transceivers with D flip­flops. Depending on the status of the Data­Source Selection pins, data may be routed to the outputs either from the flip­flops or transmitted real­time from the inputs (see Function Table and Application Information). The Output Enable and the Direction pins control the transceiver's function. Bus A and Bus B cannot be routed as outputs to each other simultaneously, but can be routed as inputs to the A and B flip­flops. Also, the A and B flip­flops can be routed as outputs to Bus A and Bus B. Additionally, when either or both of the ports are in the high­impedance state, these I/O pins may be used as inputs to the D flip­flops for data storage. The user should note that because the clocks are not gated with the Direction and Output Enable pins, data at the A and B ports may be clocked into the storage flip­flops at any time. Output Drive Capability: 15 LSTTL Loads Outputs Directly Interface to CMOS, NMOS, and TTL Operating Voltage Range: 6 V Low Input Current: 1 µA High Noise Immunity Characteristic of CMOS Devices In Compliance with the Requirements Defined by JEDEC Standard No. 7A Chip Complexity: 780 FETs or 195 Equivalent Gates

Additional Information

MC74HC646DW
Manufacturer: Motorola
Product Category: Bus Transceivers
Brand: Motorola
Logic Type: CMOS
Logic Family: 74HC
Number of Channels per Chip: 8
Output Type: 3-State
Propagation Delay Time: 265 ns
Supply Voltage - Max: 6 V
Maximum Operating Temperature: + 85 C
Package / Case: SOIC-24
Function: Tri-State Octal Bus
Mounting Style: SMD/SMT
Number of Circuits: 8
Polarity: Non-Inverting
Click here to Download Datasheet I
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