TRSF23243
3-V TO 5.5-V DUAL RS-232 PORT
www.ti.com SLLS855 – AUGUST 2007 FEATURES Single-Chip and Single-Supply Interface for
Two IBM PC/AT Serial Ports
Meets or Exceeds the Requirements of
TIA/EIA-232-F and ITU v.28 Standards
Operates With 3-V to 5.5-V VCC Supply
Always-Active Noninverting Receiver Output
(ROUT2) Per Port
Operates Up To 250 kbit/s
Low Standby Current . 1 ОјA Typical
External Capacitors . 4 Г— 0.22 ОјF
Accepts 5-V Logic Input With 3.3-V Supply
Allows for Flexible Power Down of Either
Serial Port
Serial-Mouse Driveability
RS-232 Bus-Pin ESD Protection Exceeds
В±15 kV Using Human-Body Model (HBM) APPLICATIONS Battery-Powered Systems
Notebooks
Laptops
Palmtop PCs
Hand-Held Equipment DESCRIPTION/ORDERING INFORMATION
The TRSF23243 consists of two ports, each containing three line drivers and five line receivers, and a dual …
