74LCXZ245MSA

Overview

The onsemi 74LCXZ245MSA is an octal bus transceiver with three-state outputs in a 20-lead SSOP package. It operates at 2.3V to 3.6V VCC and supports 5V tolerant inputs and outputs. Propagation delay is 7.0 ns max at 3.3V, with output drive of ±24 mA at 3.0V. Quiescent supply current is 10 µA max. Operating temperature range is -40°C to +85°C.

Feature Summary

• Provides bidirectional data transfer across eight channels with non-inverting logic.
• Features five-volt tolerant inputs and outputs for mixed-voltage system interfacing.
• Maintains high-impedance state during power-up or power-down to prevent bus loading.
• Includes patented noise and EMI reduction circuitry for signal integrity.

Applications

• Bus-oriented applications requiring low voltage operation
• Memory and flash memory modules
• High-density microcontroller systems

Procurement Notes

Verify the specific ordering code suffix matches the required package type. Confirm RoHS compliance status as per JEDEC standards. Ensure the supplier provides valid traceability documentation for the manufacturing lot. Check for any specific handling requirements related to electrostatic discharge protection during storage and transport.

Selection Notes

Select this component when designing systems that require interface between 2.5V or 3.3V logic and 5V environments. The device is suitable for applications demanding low power dissipation alongside high-speed data transmission. Consider the SSOP package constraints regarding thermal management and board space availability compared to SOIC or TSSOP alternatives.

Part Context

This part belongs to the LCX family of low-voltage CMOS logic devices. It serves as a standard solution for bidirectional data buffering in digital circuits. The MSASuffix indicates the Shrink Small Outline Package variant, distinguishing it from wider SOIC or thinner TSSOP versions within the same logical specification set.

Replacement Considerations

Direct replacements include other manufacturers' 74LCX245 variants in SSOP packages. Verify pin compatibility and electrical specifications such as propagation delay and output drive strength 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 determines the direction of data flow?

The T/R (Transmit/Receive) input determines the direction of data flow through the device.