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Product Detailed Parameters
- Description：OCTAL D-TYPE FLIP-FLOPS
- Series：*
- Mfr：Renesas Electronics Corporation
- 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：-
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- Input Capacitance：-
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Overview
The HD74LS37P-E is an octal D-type flip-flop element manufactured by Renesas Electronics Corporation. It features eight independent D-type flip-flops with edge-triggered clock inputs and three-state outputs, designed for high-speed logic applications. The device operates within a standard 5V supply voltage range and utilizes a 20-pin DIP package. It is part of the LS (Low-power Schottky) series, offering improved speed-to-power product compared to standard TTL. The component includes built-in latch functionality for data storage and bus interface applications.
Feature Summary
- Octal configuration providing eight independent D-type flip-flops in a single package
- Three-state outputs enabling direct connection to system buses without external pull-up components
- Edge-triggered operation ensuring precise data capture at clock transitions
- Compatible with standard 5V logic families for seamless integration
Applications
- Buffer registers in digital systems
- I/O port interfacing for microprocessor-based designs
- Bidirectional bus driver implementations
- Working registers for temporary data storage
Procurement Notes
Verify RoHS compliance status and lead-free certification when sourcing. Confirm package type matches design requirements. Check manufacturer datasheet for latest revision history. Ensure supplier provides official documentation. Validate pinout compatibility with existing PCB layouts before procurement.
Selection Notes
Select this component for applications requiring octal D-type flip-flop functionality with three-state output capability. Consider the LS series characteristics for balanced speed and power consumption. Verify operating temperature range meets system requirements. Evaluate package availability against manufacturing constraints. Compare performance specifications with alternative logic families if needed.
Part Context
The HD74LS37P-E belongs to Renesas' HD74LS series of general-purpose bipolar logic ICs. This family has over 30 years of market presence and high penetration in industrial applications. The device represents a standard solution for octal flip-flop requirements in 5V logic systems, maintaining compatibility with established design practices while offering reliable performance.
Replacement Considerations
HD74LS373 serves as a related transparent latch variant but differs in latching behavior. HD74LS175 provides quad D-type flip-flops with different pin configuration. HD74LS273 offers similar functionality with fewer bits. Verify pin compatibility and functional equivalence before substitution.
