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M74HCT125B1R
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Product Detailed Parameters
- Description：IC BUFFER NON-INVERT 5.5V 14DIP
- Series：74HCT
- Mfr：STMicroelectronics
- Package：Tube
- Logic Type：Buffer, Non-Inverting
- Number of Elements：4
- Number of Bits per Element：1
- Input Type：-
- Output Type：3-State
- Current - Output High, Low：6mA, 6mA
- Voltage - Supply：4.5V ~ 5.5V
- Operating Temperature：-55°C ~ 125°C (TA)
- Mounting Type：Through Hole
- Package / Case：14-DIP (0.300", 7.62mm)
- Supplier Device Package：14-DIP
- Grade：-
- Qualification：-
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Overview
The M74HCT125B1R is a high-speed CMOS quad bus buffer with three-state outputs manufactured by STMicroelectronics. It operates within a supply voltage range of 4.5V to 5.5V and supports an operating temperature from -55°C to +125°C. The device features balanced propagation delays (tPLH ≈ tPHL) and symmetrical output impedance, providing a minimum drive current of 6mA at VCC = 4.5V. Typical propagation delay is 13ns at 4.5V. Quiescent supply current is typically 4μA. It is pin and function compatible with the standard 74 series 125.
Feature Summary
- High-speed CMOS technology for fast signal buffering
- Three-state control input allows high-impedance output states
- Direct interface capability between HSC2MOS systems and TTL/NMOS components
- Balanced propagation delays and symmetrical output impedance
Applications
- Buffering signals in high-speed CMOS systems
- Interfacing HSC2MOS logic with TTL and NMOS components
- Bus-oriented applications requiring three-state control
Procurement Notes
Verify component authenticity through authorized channels as this part is obsolete. Confirm package type matches DIP-14 requirements. Check datasheet revisions for updated electrical characteristics before finalizing designs. Ensure environmental compliance documentation aligns with project specifications.
Selection Notes
Select this component when interfacing high-speed CMOS logic with TTL or NMOS systems requiring three-state bus control. Verify that the 4.5V to 5.5V supply voltage range meets system power constraints. Consider the -55°C to +125°C operating temperature range for harsh environment applications.
Part Context
The M74HCT125B1R belongs to the 74HCT logic family, designed for compatibility with TTL circuits while utilizing CMOS technology. It serves as a quad buffer with three-state outputs, facilitating data flow management in digital systems. The B1R suffix indicates the DIP-14 tube packaging variant.
Replacement Considerations
CD74HCT125E Texas Instruments SN74HCT125N Texas Instruments 74HCT125PW Nexperia 74HCT125T14-13 Diodes Incorporated MC74HCT125ADTR2G-Q onsemi
