The ST3243B/ST3243C devices consist of 3 drivers, 5 receivers and a dual charge pump circuit. The devices meet the requirements of EIA/TIA and V.28/V.24 communication standards providing high data rate capability and enhanced electrostatic discharge (ESD) protection.
All transmitter outputs and receiver inputs are protected to ±8 kV using IEC61000-4-2 contact discharge and ±15 kV IEC61000-4-2 air discharge.
The receiver R2 is always active to implement a wake-up feature for the serial port.
The ST3243B/ST3243C devices have a proprietary low-dropout transmitter output stage enabling true RS-232 performance from a 3.0 V to 5.5 V supply with a dual charge pump. The devices are guaranteed to run at data rates of 250 kbps while maintaining RS-232 output levels.
The auto-power-down feature functions when FORCEON is low and FORCEOFFis high. During this mode of operation, if the device does not sense a valid RS-232 signal, the driver outputs are disabled. If FORCEOFFis set low, both drivers and receivers (expert R2B) are shut off, and supply current is reduced to 1 μA. Disconnecting the serial port or turning off the peripheral drives causes the auto-power-down condition to occur.
Auto-power-down can be disabled when FORCEON and FORCEOFFare high, and should be done when driving a serial mouse. With auto-power-down enabled, the device is activated automatically when a valid signal is applied to any receiver input.
Typical application are in notebook, subnotebook, palmtop computers, battery-powered equipment, hand-held equipment, peripherals, and printers.
Key Features
| Description | Version | Size |
|---|---|---|
| DS2153: ±15 kV ESD protected 3 to 5.5 V, 400 kbps, RS-232 transceiver with auto-power-down | 12.0 | 468 KB |
| Description | Version | Size |
|---|---|---|
| Products and Solutions for Factory Automation and Control | 1.0 | 3 MB |
| Part Number | Package | Packing Type | Operating Temperature (°C) (min) | Operating Temperature (°C) (max) | Unit Price (US$) * | Quantity | ECCN (EU) | ECCN (US) | Country of Origin |
|---|---|---|---|---|---|---|---|---|---|
| ST3243CPR | SSOP 28 10.2x5.3 | Tape And Reel | 0 | 70 | 1.29 | 1000 | NEC | EAR99 | PHILIPPINES |
| Part Number | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|
| ST3243CPR | SSOP 28 10.2x5.3 | Industrial | Ecopack3 | md_b2-wspc-ssop-wspc-28-wspc-10.2x5.3_e2b2-wspc-uf46jc5.pdf md_b2-wspc-ssop-wspc-28-wspc-10.xml |
