SN74LS245ML1

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LS245ML1 is an octal bus transceiver manufactured by onsemi, designed for asynchronous two-way data communication between data buses. It features a single function with eight bits and utilizes Low-Power Schottky (LS-TTL) technology. The device is housed in a 20-pin plastic Small Outline Package (SOP). It operates within a voltage range of 4.75 V to 5.25 V, with a maximum propagation delay of 12 ns at 5 V. The component supports bidirectional control and includes three-state outputs.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Hysteresis inputs are integrated to improve noise immunity during signal transmission.
• Input diodes are included to limit high-speed termination effects on the bus lines.
• The device provides three-state outputs that can isolate buses when disabled via the enable input.

Buffers, Drivers, Receivers, Transceivers Applications

• Asynchronous 2-way data communication between data buses
• Microprocessor systems requiring bus isolation
• Memory mapping applications

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'ML1' against official onsemi documentation to confirm package type and tape-and-reel specifications. Ensure compliance requirements are met as the component may not be RoHS compliant based on available parameter data. Confirm pinout compatibility with existing SOP-20 footprints before integration.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for designs requiring low-power TTL logic levels and robust noise immunity. The LS-TTL family offers a balance of speed and power consumption suitable for general-purpose digital interfaces. Verify that the 5V supply voltage aligns with the system's power architecture and that the SOP-20 package fits the board layout constraints.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74LS245 series of octal bus transceivers. It is functionally equivalent to other manufacturers' variants such as the TI SN74LS245N or Motorola MC74LS245P. The device serves as a standard interface solution for connecting microprocessors to memory or I/O devices in digital circuits.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Compatible substitutes include SN74LS245N (Texas Instruments), MC74LS245P (onsemi), and HD74LS245P (Hitachi). These parts share identical logical functions and pinouts but may differ in physical package dimensions or manufacturing origin.

Buffers, Drivers, Receivers, Transceivers FAQ

What is the primary function of the DIR input?

The Direction Input (DIR) controls the transmission direction of data, allowing it to flow from Bus A to Bus B or from Bus B to Bus A depending on its logic level.

How does the device handle bus isolation?

The Enable input (E) can be used to disable the device, effectively isolating the buses from each other to prevent unwanted data transfer.