LTC488ISW#PBF

Drivers, Receivers, Transceivers Overview

The LTC488ISW#PBF is a low-power quad RS-485 line receiver manufactured by Analog Devices Inc. It operates on a single 5V supply with a voltage range of 4.75V to 5.25V and draws a typical supply current of 7mA. The device features four receivers with three-state outputs, supporting data rates up to 10Mb/s. It provides an extended common-mode range from -7V to +12V, allowing for significant ground differences between devices. Key electrical parameters include a typical propagation delay of 28ns, input hysteresis of 60mV, and ESD protection rated at 2kV. The component is housed in a 16-lead plastic wide SOIC (SW) package and supports industrial temperature ranges from -40°C to +85°C.

Drivers, Receivers, Transceivers Feature Summary

• Low power CMOS design offering significant savings over bipolar counterparts while maintaining ruggedness against overload and ESD damage.
• Fail-safe feature guarantees a high output state when differential inputs are left open or floating.
• Three-state outputs maintain high impedance across the entire common-mode range, including during power-off conditions.
• Extended common-mode range permits up to ±7V ground difference between devices connected to the bus.

Drivers, Receivers, Transceivers Applications

• Multipoint data transmission systems adhering to RS-485 standards.
• Level translation interfaces between different logic families.
• RS-422 compliant communication networks requiring robust line reception.

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix #PBF indicates lead-free finish compliance. Confirm the ISW suffix corresponds to the industrial temperature grade (-40°C to +85°C) and the Wide SOIC package type. Ensure the source documentation explicitly lists this part number as available through authorized channels before proceeding with acquisition.

Drivers, Receivers, Transceivers Selection Notes

Select this component when a quad receiver configuration is required without integrated drivers. It serves as a pin-compatible replacement for the SN75173 in existing designs. Consider the 7mA supply current and 28ns propagation delay for system timing analysis. Verify that the application does not require shutdown functionality, as this specific variant lacks control pins for power-down modes.

Drivers, Receivers, Transceivers Part Context

This component belongs to the LTC488/LTC489 family of low-power differential bus receivers. The LTC488 variant specifically provides four independent receivers controlled by two enable pins. It is designed to complement driver ICs like the LTC486 in half-duplex multipoint networks. The series emphasizes low power consumption and high noise immunity for industrial communication environments.

Drivers, Receivers, Transceivers Replacement Considerations

The datasheet identifies the SN75173 as a pin-compatible alternative. Designers migrating from other RS-485 receivers should verify that the replacement maintains compatibility with the existing board layout and signal integrity requirements, particularly regarding the common-mode range and output drive capabilities.