ST26C31BTR

Product Overview

The ST26C31BTR from STMicroelectronics is a 16-TSSOP interface driver for RS422 and RS485 communication. The device uses a 4/0 driver/receiver configuration, providing four driver channels and no receiver channels. It operates from a 4.5 V to 5.5 V supply and is specified for an ambient operating temperature range from -40°C to 85°C. The package is a surface-mount 16-TSSOP with a 0.173 in (4.40 mm) body width. The 4/0 arrangement supports circuits that require driver outputs but do not require integrated receiver channels.

Key Features

• Manufacturer part number: ST26C31BTR.
• Type: driver.
• 4/0 driver configuration: four driver channels and no receiver channels.
• Protocol: RS422 and RS485.
• Supply voltage range: 4.5 V to 5.5 V.
• Operating temperature range: -40°C to 85°C.
• Mounting type: surface mount.
• Package: 16-TSSOP (0.173 in, 4.40 mm width).

Applications

• Differential serial communication links in equipment interconnects.
• Multi-drop bus systems that require transmit-only driver channels.
• Controller-to-peripheral communication paths using RS422 or RS485 signaling.

Design & Procurement Notes

When selecting the ST26C31BTR, confirm that the system requires a transmit-only interface device with four driver channels and no receiver channels, since the 4/0 configuration does not provide receiver functions. The 4.5 V to 5.5 V supply range should be matched to the board's logic or interface supply, and the 16-TSSOP surface-mount package requires an appropriate reflow footprint and land pattern. The -40°C to 85°C operating range should be checked against the expected ambient conditions in the final equipment. The package width and pad layout should also be reviewed for available board area and automated assembly.