LTC488CSW#PBF

Drivers, Receivers, Transceivers Overview

The LTC488CSW#PBF is a low-power quad RS-485 line receiver manufactured by Analog Devices Inc. It operates on a single 5V supply with a specified range of 4.75V to 5.25V and draws a typical supply current of 7mA. The device features four independent receivers with three-state outputs, designed for multipoint data transmission in RS-485 applications. It supports a bus common mode range from -7V to +12V, allowing up to ±7V ground difference between devices. Key electrical parameters include a typical propagation delay of 28ns, an input hysteresis of 60mV, and ESD protection rated at 2kV. The component is housed in a 16-lead plastic wide SOIC (SW) package and is rated for operation within the commercial temperature range of 0°C to 70°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 of -7V to +12V permits substantial ground differences between devices on the bus.

Drivers, Receivers, Transceivers Applications

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

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and RoHS adherence as per manufacturer specifications. Confirm the SW package designation matches the required 16-lead wide SOIC footprint for PCB layout compatibility. Ensure the 'C' grade variant meets the intended operational temperature requirements of 0°C to 70°C for the target environment.

Drivers, Receivers, Transceivers Selection Notes

Select this component when a dedicated quad receiver is needed without integrated drivers. Verify that the system requires pin compatibility with SN75173 equivalents if replacing legacy designs. Consider the 28ns propagation delay and 60mV hysteresis for signal integrity in noisy industrial environments. Ensure the application does not require shutdown modes, as this specific receiver variant lacks them.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC488/LTC489 family of low-power differential bus receivers. The LTC488 variant provides two enable pins for controlling all four receivers simultaneously, whereas the LTC489 offers separate enables for pairs of receivers. Both share identical electrical characteristics and pinouts, differing primarily in control logic configuration for system integration flexibility.

Drivers, Receivers, Transceivers Replacement Considerations

The datasheet explicitly notes pin compatibility with the SN75173 for the LTC488. Designers replacing legacy components should verify that the SN75173's electrical specifications align with the LTC488's extended common mode range and fail-safe features before substitution.