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MC74HC245ADTR2
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Product Detailed Parameters
- Description：IC TXRX NON-INVERT 6V 20TSSOP
- Series：74HC
- Mfr：onsemi
- Package：Tape & Reel (TR)
- Logic Type：Transceiver, Non-Inverting
- Number of Elements：1
- Number of Bits per Element：8
- Input Type：-
- Output Type：3-State
- Current - Output High, Low：7.8mA, 7.8mA
- Voltage - Supply：2V ~ 6V
- Operating Temperature：-55°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：20-TSSOP (0.173", 4.40mm Width)
- Supplier Device Package：20-TSSOP
- Grade：-
- Qualification：-
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Overview
The MC74HC245ADTR2 is an octal 3-state noninverting bus transceiver manufactured by onsemi. It utilizes high-performance silicon-gate CMOS technology and operates within a voltage range of 2.0 V to 6.0 V. The device features bidirectional data flow control via a direction pin and includes an active-low output enable for high-impedance states. It provides an output drive capability of 15 LSTTL loads and maintains low input current of 1 µA. The component is housed in a TSSOP-20 package.
Feature Summary
- Bidirectional octal bus transceiver with 3-state outputs
- Compatible with standard CMOS, NMOS, and TTL logic families
- Direction control determines data flow between ports A and B
Applications
- Two-way asynchronous communication between data buses
- Input buffering for systems requiring high noise immunity
- I/O port expansion in microcontroller-based designs
Procurement Notes
Verify the specific suffix 'DTR2' against the official datasheet to confirm the TSSOP-20 package and tape-and-reel orientation. Ensure the order quantity matches the manufacturer's standard reel specifications. Confirm RoHS compliance status for the specific production batch prior to integration into final assemblies.
Selection Notes
Select this component when an octal transceiver compatible with LS245 pinouts is required. It is suitable for applications needing interface between CMOS, NMOS, and TTL devices. Consider the 2.0 V to 6.0 V operating range and 15 LSTTL load drive capability for system compatibility.
Part Context
This part belongs to the HC/UH series of high-speed CMOS logic devices. It serves as a direct replacement for older LS245 equivalents while offering improved noise immunity and lower power consumption typical of modern CMOS technology. The device supports bidirectional data transfer across two 8-bit ports.
Replacement Considerations
The MC74HC245A is pin-compatible with the SN74LS245. Verify that the receiving circuitry can handle the CMOS input thresholds if replacing TTL-based designs.
