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74LCXZ245MTC
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Product Detailed Parameters
- Description：IC TXRX NON-INVERT 3.6V 20TSSOP
- Series：74LCXZ
- Mfr：onsemi
- Package：Tube
- 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：24mA, 24mA
- Voltage - Supply：2.7V ~ 3.6V
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：20-TSSOP (0.173", 4.40mm Width)
- Supplier Device Package：20-TSSOP
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Overview
The onsemi 74LCXZ245MTC is an octal bus transceiver featuring non-inverting bidirectional buffers with three-state outputs. It operates within a supply voltage range of 2.3V to 3.6V and supports 5V tolerant inputs and outputs, enabling direct interfacing with 5V signal environments. The device utilizes advanced CMOS technology for high-speed operation while maintaining low power dissipation. It includes dedicated OE and T/R control inputs to manage data flow direction and output states. The component is housed in a 20-lead Thin Shrink Small Outline Package (TSSOP).
Feature Summary
- Provides five-volt tolerant inputs and outputs for mixed-voltage system compatibility.
- Maintains high impedance state during power-up or power-down to prevent bus loading.
- Implements patented noise and EMI reduction circuitry for signal integrity.
Applications
- Bus-oriented applications requiring bidirectional data transfer.
- Low voltage (2.5V and 3.3V) systems interfacing with 5V signal environments.
- Live insertion and withdrawal support in bus architectures.
Procurement Notes
Verify the specific ordering code suffix to confirm package type and tape/reel configuration. Ensure the procurement matches the required operating temperature range of -40°C to 85°C. Confirm lead-free compliance status if required by assembly specifications. Cross-reference the manufacturer datasheet revision date against production lot requirements.
Selection Notes
Select this component when designing systems that require bidirectional data buffering between different voltage domains. The 5V tolerance feature allows seamless integration with legacy 5V peripherals without additional level shifting components. Consider the package dimensions and thermal characteristics of the TSSOP-20 form factor for PCB layout constraints.
Part Context
This part belongs to the LCX family of low-voltage CMOS logic devices. It serves as a bidirectional buffer designed for high-speed data transmission in portable and battery-powered applications. The device complements other logic families by offering improved speed and lower power consumption compared to older standards.
Replacement Considerations
Direct replacements include the 74LCX245 from Fairchild Semiconductor or ON Semiconductor. Verify pinout compatibility and electrical specifications such as propagation delay and drive current before substitution.
FAQ
How does the device handle power-down conditions?
When VCC is between 0V and 1.5V, the device enters a high impedance state, preventing intermittent low impedance loading or glitching on the bus.
What controls the direction of data flow?
The T/R (Transmit/Receive) input determines the direction of data flow through the device.
