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Product Detailed Parameters
- Description：IC FF D-TYPE SNGL 8BIT 20DIP
- Series：74HCT
- Mfr：Harris Corporation
- Package：Bulk
- Function：Standard
- Type：D-Type
- Output Type：Non-Inverted
- Number of Elements：1
- Number of Bits per Element：8
- Clock Frequency：50 MHz
- Max Propagation Delay @ V, Max CL：38ns @ 4.5V, 50pF
- Trigger Type：Positive Edge
- Current - Output High, Low：4mA, 4mA
- Voltage - Supply：4.5V ~ 5.5V
- Current - Quiescent (Iq)：8 µA
- Operating Temperature：-55°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：20-SOIC
- Package / Case：20-SOIC (0.295", 7.50mm Width)
- Input Capacitance：10 pF
- Grade：-
- Qualification：-
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Overview
The CD74HCT377EX is an octal D-type flip-flop manufactured by Harris Corporation, belonging to the 74HCT logic series. It features a single element with eight bits per element and utilizes positive-edge triggering for data capture. The device operates within a supply voltage range of 4.5V to 5.5V and supports surface-mount installation in a 20-TSSOP package measuring 0.173 inches (4.40mm) in width. It provides non-inverting outputs with specified high and low output currents of 4mA each. The component is rated for operation across a temperature range of -55°C to 125°C (TA).
Feature Summary
- Octal D-type flip-flop architecture with positive-edge trigger functionality.
- Non-inverting output configuration providing stable signal transmission.
- High-temperature operational capability suitable for demanding environments.
Applications
- Parallel data storage systems requiring multi-bit retention.
- Digital signal processing circuits utilizing edge-triggered state changes.
- Computer peripheral interfaces managing parallel data transfer.
Procurement Notes
Verify manufacturer identification as Harris Corporation, noting that production rights for this logic family may have transferred to other entities such as Texas Instruments. Confirm the specific suffix 'EX' corresponds to the TSSOP-20 package variant. Ensure compliance with RoHS directives if required for the target application, checking against the provided datasheet specifications for environmental status.
Selection Notes
Select this component when an octal D-type flip-flop with HCT-compatible input levels is required. The 74HCT series ensures compatibility with standard TTL logic inputs while offering CMOS performance characteristics. Consider the 20-TSSOP package for surface-mount assembly needs and verify the extended temperature range meets the operational requirements of the specific electronic system design.
Part Context
This part belongs to the widely adopted 74HCT logic family, designed for high-speed digital applications. The CD74HCT377 specifically implements an octal D-type flip-flop structure, essential for storing eight bits of data simultaneously. As a product of Harris Corporation, it represents a legacy component in the evolution of standard logic integrated circuits used in various consumer and industrial electronics.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Cross-reference with CD74HCT377 variants from other manufacturers only if electrical parameters and pinouts match exactly.
