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Product Detailed Parameters
- Description：SN54LS374 OCTAL D-TYPE EDGE TRIG
- Series：*
- Mfr：Texas Instruments
- Package：Bulk
- Function：-
- Type：-
- Output Type：-
- Number of Elements：-
- Number of Bits per Element：-
- Clock Frequency：-
- Max Propagation Delay @ V, Max CL：-
- Trigger Type：-
- Current - Output High, Low：-
- Voltage - Supply：-
- Current - Quiescent (Iq)：-
- Operating Temperature：-
- Mounting Type：-
- Supplier Device Package：-
- Package / Case：-
- Input Capacitance：-
- Grade：-
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Overview
The SN54LS374 (part number 7801102SA) is an octal D-type edge-triggered flip-flop manufactured by Texas Instruments. It features three-state outputs for efficient bus driving and operates within a military-grade temperature range of -55°C to 125°C. The device is housed in a CFP (W) package with 20 pins, designed for high-reliability applications requiring robust digital storage capabilities under extreme environmental conditions.
Feature Summary
- Octal configuration providing eight independent D-type edge-triggered flip-flops
- Three-state outputs enabling direct connection to system buses without external buffers
- Military-grade operational capability spanning -55°C to 125°C for harsh environments
Applications
- High-reliability aerospace and defense digital systems
- Industrial control systems requiring extended temperature tolerance
- Bus-oriented memory register architectures
Procurement Notes
Verify the specific manufacturer source and lot traceability when sourcing this component, as it falls under military specifications. Confirm that the physical package matches the CFP (W) 20-pin configuration required for your design. Ensure that the supplier provides documentation confirming the -55°C to 125°C operating range compliance. Check for any specific handling requirements associated with ceramic flatpack packages during assembly.
Selection Notes
Select this component when designing systems that require octal storage with bus-compatible outputs in extreme thermal environments. It is suitable for applications where standard commercial-grade logic devices would fail due to temperature constraints. Consider the pin count and package style compatibility with your PCB layout before finalizing the selection.
Part Context
This part belongs to the SN54LS series, which represents low-power Schottky logic family components designed for military and industrial use. The SN54 series typically offers wider temperature ranges compared to the SN74 series. The 7801102SA designation specifically identifies the octal flip-flop variant within this lineage, emphasizing its role in complex digital signal processing tasks.
Replacement Considerations
Direct replacements must match the SN54LS374 specification, including the octal D-type architecture and three-state outputs. Verify that alternative sources provide equivalent military-grade temperature ratings (-55°C to 125°C). Ensure the replacement package is compatible with the existing footprint or allows for necessary adapter modifications.
