SN74LS623DWR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LS623DWR is an octal bus transceiver from the Texas Instruments 74LS series, housed in a 20-pin SOIC package. It features bidirectional data transfer with local bus-latch capability, allowing independent control of input and output directions. The device operates within a supply voltage range of 4.75 V to 5.25 V and supports a wide operating temperature range from 0°C to 70°C. Key electrical characteristics include a propagation delay of 12 ns and output drive currents of 2.6 mA (high) and 24 mA (low). Hysteresis at the bus inputs enhances noise margins for reliable signal integrity.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Bidirectional octal bus transceiver with integrated local bus-latch functionality
• Hysteresis at bus inputs to improve noise margins and signal stability
• Tri-state outputs enabling effective bus line driving and isolation

Buffers, Drivers, Receivers, Transceivers Applications

• Local bus-latch applications requiring independent direction control
• Memory and memory interface systems
• Instrumentation and industrial control systems

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'DWR' corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the 74LS logic family specifications align with the target system's power and speed requirements before finalizing procurement orders.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when bidirectional data transfer with local latching is necessary. The 74LS series offers higher current drive compared to standard TTL but consumes more power than CMOS alternatives. Ensure the system operates strictly within the 4.75 V to 5.25 V supply voltage range to maintain specified performance parameters.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the Texas Instruments 74LS logic family, known for low-power Schottky technology. It serves as a functional equivalent to other octal bus transceivers like the SN74LS646 or SN74LS645, though pinouts and specific latch capabilities may vary. The DWR suffix indicates surface-mount packaging suitable for high-volume manufacturing.

Buffers, Drivers, Receivers, Transceivers FAQ

What is the primary advantage of the local bus-latch capability?

It allows the device to capture data on one side while maintaining independent control over the direction of data flow on the other side, facilitating complex bus architectures.

How does hysteresis benefit this device?

Hysteresis at the bus inputs improves noise margins, ensuring stable operation in electrically noisy environments by preventing false triggering due to signal fluctuations.