SN54F621, SN74F621 OCTAL BUS TRANSCEIVERS WITH OPEN-COLLECTOR OUTPUTS

SDFS004B - D2932, MARCH 1987 - REVISED OCTOBER 1993

features

Local Bus-Latch Capability
Noninverting Logic
Package Options Include Plastic Small-Outline Packages, Ceramic Chip Carriers, and Standard Plastic and Ceramic 300-mil DIPs

description

These octal bus transceivers are designed for asynchronouscommunication between data buses. The control function implementationallows for maximum flexibility in timing.

These devices allow data transmission from the A bus to the B busor from the B bus to the A bus depending upon the logic levels at theoutput enable (OEAB and )inputs.

The output-enable inputs can be used to disable the device so thatthe buses are effectively isolated. The dual-enable configurationgives the transceivers the capability of storing data bysimultaneously enabling OEAB and . Each output reinforces its input in thisconfiguration. When both OEAB and are enabled and all other data sources to the two setsof bus lines are at high impedance, both sets of bus lines (16 inall) will remain at their last states.

The SN54F621 is characterized for operation over the full militarytemperature range of -55°C to 125°C. The SN74F621 ischaracterized for operation from 0°C to 70°C.

Title: OCTAL BUS TRANSCEIVERS WITH OPEN-COLLECTOR OUTPUTS
Product Family: UNIVERSAL BUS TRANSCEIVERS (UBTS)
Device Functionality: BUS TRANSCEIVER
Orderable Devices: SN54F621J, SNJ54F621FK, SNJ54F621J, SN74F621DW, SN74F621DWR, SN74F621N

View the complete PDF datasheet: sdfs004b.pdf (71 K Bytes) (Requires Acrobat Reader 3.x)

View more information about generic part numbers:SN54F621, SN74F621

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