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Product Detailed Parameters
- Description：IC BINARY COUNTR DL 4BIT 14CDIP
- Series：74HCT
- Mfr：Harris Corporation
- Package：Bulk
- Logic Type：Binary Counter
- Direction：Up
- Number of Elements：2
- Number of Bits per Element：4
- Reset：Asynchronous
- Timing：-
- Count Rate：27 MHz
- Trigger Type：Negative Edge
- Operating Temperature：-55°C ~ 125°C (TA)
- Mounting Type：Through Hole
- Package / Case：14-CDIP (0.300", 7.62mm)
- Supplier Device Package：14-CDIP
- Voltage - Supply：4.5 V ~ 5.5 V
- Grade：-
- Qualification：-
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Overview
The CD74HCT646M is a non-inverting transceiver manufactured by Harris Corporation, housed in a 24-SOIC package. It operates within a supply voltage range of 4.5V to 5.5V and supports output currents of 6mA for both high and low states. The device functions as an 8-bit transceiver with tri-state outputs and is rated for an operating temperature range of -55°C to 125°C. While the model number indicates HCT logic, the specific part 5962-8989001CA is identified as a binary counter IC.
Feature Summary
- Non-inverting transceiver functionality
- Tri-state output capability
- Surface mount packaging
Applications
- Data bus interfacing
- Memory interface circuits
- Digital signal routing
Procurement Notes
Verify the exact component type against datasheets, as the model number CD74HCT646M denotes a transceiver while 5962-8989001CA is listed as a binary counter. Confirm RoHS compliance status, as some sources indicate non-compliance. Ensure the manufacturer and package details match your design requirements before procurement.
Selection Notes
Select this component based on its 24-SOIC form factor and wide temperature rating. Consider the 6mA drive strength for load requirements. Verify compatibility with 5V logic systems due to the specified supply voltage range. Cross-reference the MIL-spec number with the commercial equivalent to ensure functional equivalence.
Part Context
This component belongs to the 74HCT series of logic devices, known for CMOS performance with TTL-compatible inputs. The 5962 prefix indicates a military-grade or specialized variant. Harris Corporation was a prominent semiconductor manufacturer before its acquisition, contributing to this product line's availability in industrial and aerospace sectors.
Replacement Considerations
Check for direct equivalents from other manufacturers offering the same 24-SOIC footprint and electrical characteristics. Verify pinout compatibility if substituting with similar transceivers. For the counter variant, identify compatible binary counters with matching element counts and package styles.
