SN65C23243DLR 6/10 Transceiver Full RS232 48-SSOP Integrated Circuits ICs

Description

The SN65C23243 and SN75C23243 consist of two ports, each containing three line drivers and five line

receivers, and a dual charge-pump circuit with ±15-kV ESD protection pin to pin (serial-port connection

pins, including GND). These devices meet the requirements of TIA/EIA-232-F and provide the electrical

interface between an asynchronous communication controller and the serial-port connector. This

combination of drivers and receivers matches that needed for two typical serial ports used in an IBM PC/AT

, or compatible. The charge pump and four small external capacitors allow operation from a single 3-V

to 5.5-V supply. In addition, these devices include an always-active noninverting output (ROUT2) per port,

which allows applications using the ring indicator to transmit data while the devices are powered down.

The devices operate at data signaling rates up to 250 kbit/s and a maximum of 30-V/µs driver output slew-rate.

Single-Chip and Single-Supply Interface for Two IBM

PC/AT Serial Ports

Meet or Exceed the Requirements of TIA/EIA-232-F and ITU v.28 Standards

Operate With 3-V to 5.5-V VCC Supply Always-Active Noninverting Receiver Output (ROUT2) Per Port

Operate Up To 250 kbit/s

Low Standby Current . . . 1 µA Typical

External Capacitors . . . 4 × 0.22 µF

Accept 5-V Logic Input With 3.3-V Supply

Allow for Flexible Power Down of Either Serial Port

Serial-Mouse Driveability

RS-232 Bus-Pin ESD Protection Exceeds ±15 kV Using Human-Body Model (HBM)

 Applications

− Battery-Powered Systems, Notebooks, Laptops, Palmtop PCs, and Hand-Held Equipment