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Product Detailed Parameters
- Description：BUS DRIVER/TRANSCEIVER, 4-BIT
- Series：*
- Mfr：Texas Instruments
- Package：Bulk
- Logic Type：-
- Number of Elements：-
- Number of Bits per Element：-
- Input Type：-
- Output Type：-
- Current - Output High, Low：-
- Voltage - Supply：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The SNJ54HC242J is a high-speed CMOS octal bus transceiver manufactured by Texas Instruments. It features 3-state outputs and operates within a voltage range of 2V to 6V. The device supports bidirectional data transmission with independent direction control for each port. It is housed in a 20-pin ceramic dual in-line package (CDIP) designed for military-grade reliability. The component functions as an octal buffer or bus driver, providing robust signal integrity across wide temperature ranges.
Feature Summary
- Octal configuration providing eight independent bidirectional data paths
- Independent direction control allows flexible data flow management between ports
- 3-state outputs enable direct connection to system buses without additional drivers
- Military-grade construction ensures operation under extreme environmental conditions
Applications
- Military communication systems requiring high reliability
- Aerospace data bus interfaces
- Industrial control systems operating in harsh environments
- High-density memory buffer applications
Procurement Notes
Verify the specific suffix J indicates the ceramic DIP package variant. Confirm RoHS compliance status as legacy military parts may differ from commercial standards. Check datasheet for exact electrical characteristics matching your system requirements. Ensure handling procedures account for the ceramic package type during assembly.
Selection Notes
Select this component when military-grade reliability and wide temperature operation are required. Compare propagation delay specifications against system timing constraints. Verify pin compatibility with existing PCB layouts due to the specific CDIP footprint. Consider power consumption differences compared to standard commercial logic families.
Part Context
This part belongs to the 54HC series of high-speed CMOS logic devices. The 54-series designation typically indicates military qualification standards. It serves as a critical interface component in digital systems requiring isolated bidirectional data transfer. The HC technology offers low power consumption while maintaining high switching speeds.
Replacement Considerations
SNJ54LS242J: Lower speed but compatible pinout. SNJ54ALS242J: Faster switching with similar power profile. SNJ54F242J: Higher speed performance. Verify package dimensions and electrical parameters before substitution.
