74HC243DB,118

Overview

The 74HC243DB,118 is a high-speed Si-gate CMOS quad bus transceiver with non-inverting 3-state outputs. It supports bidirectional asynchronous data communication across four lines. The device operates within a supply voltage range of 2.0 V to 6.0 V and features an SSOP-14 package (SOT337-1). Propagation delay is typically 6 ns at 5.0 V with 15 pF load. It complies with JEDEC standard no. 7A and offers ESD protection exceeding 2000 V (HBM) and 200 V (MM).

Feature Summary

• Non-inverting 3-state outputs for bus isolation
• Bidirectional 4-line asynchronous data communication
• High electrostatic discharge protection capabilities

Applications

• Data bus communication systems
• Bus driver applications
• Memory interface circuits

Procurement Notes

Verify the specific ordering suffix against current manufacturer documentation to confirm package type and temperature range specifications. Confirm availability status as product lifecycles may change. Ensure compatibility with existing system voltage levels and logic families before integration.

Selection Notes

Select this component for designs requiring bidirectional data transfer between buses with tri-state isolation. Compare propagation delays and power dissipation requirements against system timing constraints. Verify that the SSOP-14 footprint matches the PCB layout design rules.

Part Context

This part belongs to the 74HC series of high-speed CMOS logic devices. It is pin-compatible with low-power Schottky TTL (LSTTL) standards. The device functions similarly to the 74HC242 but provides true non-inverting outputs rather than inverting ones.

Replacement Considerations

The 74HC242 serves as a functional alternative if inverting outputs are acceptable. Other quad bus transceivers from the same family may offer different packaging options or speed grades.