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SN54LS85J is listed in the Comparators range at ChipApex. The manufacturer field lists Texas Instruments. Its product description is 54LS85 4-BIT MAGNITUDE COMPARATO. Review the specifications below when checking this part for your BOM.
Comparators specifications for SN54LS85J
- Description：54LS85 4-BIT MAGNITUDE COMPARATO
- Series：*
- Mfr：Texas Instruments
- Package：Bulk
- Type：-
- Number of Bits：-
- Output：-
- Output Function：-
- Voltage - Supply：-
- Current - Output High, Low：-
- Max Propagation Delay @ V, Max CL：-
- Current - Quiescent (Iq)：-
- Operating Temperature：-
- Package / Case：-
- Supplier Device Package：-
- Mounting Type：-
- Grade：-
- Qualification：-
Comparators datasheet and documents for SN54LS85J
Comparators Overview
The SN54LS85J is a 4-bit magnitude comparator manufactured by Texas Instruments. It operates within an extended temperature range of -55°C to 125°C and utilizes a 16-lead ceramic dual in-line package (CDIP). The device provides true outputs for A<B, A=B, and A>B comparisons. It features cascading inputs to facilitate expansion to larger bit widths. The component is designed for military-grade reliability and high-speed logic applications requiring deterministic binary evaluation.
Comparators Feature Summary
- Provides simultaneous comparison of two 4-bit binary or BCD numbers
- Supports cascading for multi-bit magnitude comparison expansion
- Operates reliably across extended industrial and military temperature ranges
Comparators Applications
- Military-grade digital control systems
- High-reliability arithmetic logic units
- Industrial automation comparators
Comparators Procurement Notes
Verify the specific ordering suffix against the manufacturer's current datasheet to confirm pinout and electrical specifications. Ensure the CDIP package variant matches the target PCB footprint. Confirm RoHS compliance status as historical data may vary. Validate that the extended temperature rating meets the operational environment requirements before finalizing procurement.
Comparators Selection Notes
Select this component when military-grade temperature stability and ceramic packaging are required. Compare propagation delay characteristics against other LS series variants if speed is critical. Ensure the design accommodates the through-hole mounting style inherent to the CDIP package. Verify power supply voltage compatibility with standard TTL levels.
Comparators Part Context
This part belongs to the SN54/74LS85 family of 4-bit magnitude comparators. The SN54 prefix indicates military-grade qualification and extended temperature operation compared to commercial SN74 variants. It serves as a fundamental building block for arithmetic circuits and decision-making logic in digital systems.
Comparators Replacement Considerations
SN54S85J: Faster switching speed but higher power consumption. SN54LS85N: Plastic DIP package instead of ceramic. SN74LS85N: Commercial grade with limited temperature range.
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