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Product Detailed Parameters
- Description：54ALS244 OCTAL BUFFERS AND LINE
- 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 SNJ54ALS244CJ is an octal buffer and line driver featuring three-state outputs, manufactured by Texas Instruments. It 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. The device utilizes a 20-pin ceramic dual in-line package (CDIP). Electrical characteristics include a maximum propagation delay of 16 ns at 4.5 V and 10 ns at 5.5 V, with low-level output current capabilities up to 24 mA.
Feature Summary
- Designed for high-performance memory address drivers, clock drivers, and bus-oriented receivers and transmitters.
- Features pnp inputs that reduce DC loading on driving circuits.
- Provides symmetrical active-low output-enable inputs for controlled bus interfacing.
Applications
- Driving bus lines
- Buffering memory address registers
- Clock distribution systems
Procurement Notes
Verify the specific ordering suffix 'CJ' corresponds to the CDIP package configuration. Confirm RoHS compliance status as indicated in official documentation, noting potential lead finish variations. Ensure the procurement source provides valid traceability for military-grade specifications required for this component series.
Selection Notes
Select this component when military-grade temperature stability (-55 °C to 125 °C) is mandatory. Choose the ALS logic family for faster switching speeds compared to standard LS devices. Verify that the 3-state output requirements align with the system's bus architecture and that the 20-pin DIP footprint fits the mechanical constraints.
Part Context
This part belongs to the SN54ALS244C family of octal buffers and line drivers. The 'SNJ' prefix denotes a military-qualified version produced under specific quality standards. It shares functional similarities with the SN74ALS244C but differs in temperature rating and qualification level, targeting defense and aerospace applications requiring extended environmental resilience.
Replacement Considerations
Direct replacements include SN54ALS244CFK (LCCC package) or SN54AS244AJ (AS series). Verify pinout compatibility and ensure the substitute meets the -55 °C to 125 °C operating temperature requirement. Check if the alternative offers sufficient drive current for the specific load conditions.
