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Product Detailed Parameters
- Description：OCTAL BUS TRANSCEIVERS WITH 3-ST
- Series：54BCT
- Mfr：Texas Instruments
- Package：Tube
- Logic Type：Transceiver, Inverting
- Number of Elements：1
- Number of Bits per Element：8
- Input Type：-
- Output Type：3-State
- Current - Output High, Low：12mA, 48mA
- Voltage - Supply：4.5V ~ 5.5V
- Operating Temperature：-55°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：20-CLCC
- Supplier Device Package：20-LCCC (8.89x8.89)
- Grade：-
- Qualification：-
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Overview
The SNJ54BCT640FK is a military-grade octal bus transceiver utilizing state-of-the-art BiCMOS technology. It facilitates asynchronous communication between data buses with direction control and output enable functions. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating free-air temperature range from -55 °C to 125 °C. It features undershoot-protection circuitry, power-up high-impedance states, and ESD protection exceeding 2000 V per MIL-STD-883C Method 3015.
Feature Summary
- State-of-the-art BiCMOS design substantially reduces standby current
- Outputs include undershoot-protection circuitry for signal integrity
- ESD protection exceeds 2000 V per MIL-STD-883C Method 3015
- Buffered control inputs reduce DC loading effects on control lines
Applications
- Military and defense applications requiring full temperature range operation
- Asynchronous communication interfaces between data buses
- Systems requiring high-impedance isolation between bus segments
Procurement Notes
Verify the specific ordering suffix FK corresponds to the ceramic leadless chip carrier package. Confirm that the SN prefix indicates military qualification standards. Ensure the component meets the required MIL-STD-883C reliability criteria for your specific application environment before finalizing procurement.
Selection Notes
Select this component when military-grade temperature stability (-55 °C to 125 °C) is mandatory. The BiCMOS technology offers lower standby current compared to standard CMOS alternatives. Verify that the 20-pin LCCC package fits the mechanical constraints of the target assembly.
Part Context
This part belongs to the SN54BCT640 family, which includes variants like SNJ54BCT640J and SNJ54BCT640W. These devices are designed for bidirectional data transfer with controlled directionality. The SNJ prefix denotes military qualification, distinguishing it from commercial SN74 series counterparts.
Replacement Considerations
SNJ54BCT640J (CDIP package), SNJ54BCT640W (CFP package)
