SN54HCT645, SN74HCT645
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS

SCLS019B - MARCH 1984 - REVISED MAY 1997

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features

• Inputs Are TTL-Voltage Compatible
• True Logic
• High-Current 3-State Outputs Can Drive up to 15 LSTTL Loads
• Package Options Include Plastic Small-Outline (DW) and Ceramic Flat (W) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs

description

These octal bus transceivers are designed for asynchronous two-way communication between data buses. These devices transmit data from the A bus to the B bus or from the B bus to the A bus, depending upon the level at the direction-control (DIR) input. The output-enable () input can be used to disable the device so the buses are effectively isolated.

The SN54HCT645 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74HCT645 is characterized for operation from -40°C to 85°C.