TRSF23243
TRSF23243 is 3-V TO 5.5-V DUAL RS-232 PORT manufactured by Texas Instruments.
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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 μA Typical
- External Capacitors . . . 4 × 0.22 μF
- 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
±15 k V Using Human-Body Model (HBM)
APPLICATIONS
- Battery-Powered Systems
- Notebooks
- Laptops
- Palmtop PCs
- Hand-Held Equipment
TRSF23243 3-V TO 5.5-V DUAL RS-232 PORT
SLLS855
- AUGUST 2007
DESCRIPTION/ORDERING INFORMATION
The TRSF23243 consists of two ports, each containing three line drivers and five line receivers, and a dual charge-pump circuit with ±15-k V ESD protection pin to pin (serial-port connection pins, including GND). This device meets the requirements of TIA/EIA-232-F and provides the electrical interface between an asynchronous munication controller and the serial-port connector. This bination of drivers and receivers matches that needed for two typical serial ports used in an IBM PC/AT, or patible. The charge pump and four small external capacitors allow operation from a single 3-V to 5.5-V supply. In addition, this device includes an always-active noninverting output (ROUT2) per port, which allows applications using the ring indicator to transmit data while the device is powered down. The device operates at data signaling rates up to 250 kbit/s and a maximum of 30-V/μs driver output slew-rate.
TA 0°C to 70°C
- 40°C to 85°C
ORDERING...
