Overview
The SN65C3232EPWR, produced by Texas Instruments, is a 3-V to 5.5-V two-channel RS-232 line driver and receiver. This device is designed to provide the electrical interface between an asynchronous communication controller and the serial-port connector. It operates at data signaling rates up to 1 Mbit/s and features a dual charge-pump circuit that allows operation from a single 3-V to 5.5-V supply. The SN65C3232EPWR includes ±15-kV IEC ESD protection for RS-232 pins, ensuring robustness against electrostatic discharge.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 3 | 3.3 / 5 | 3.6 / 5.5 | V |
| Driver High-Level Input Voltage (VIH) | 2 | - | - | V |
| Driver Low-Level Input Voltage (VIL) | 0.8 | - | - | V |
| Receiver Input Voltage | -25 | - | 25 | V |
| Operating Free-Air Temperature | -40 | - | 85 | °C |
| Driver Output Slew Rate | 14 | - | 150 | V/μs |
| ESD Protection (HBM) | ±15 | - | - | kV |
| ESD Protection (IEC 61000-4-2 Air-Gap Discharge) | ±15 | - | - | kV |
| ESD Protection (IEC 61000-4-2 Contact Discharge) | ±8 | - | - | kV |
Key Features
- Operates with 3-V to 5.5-V VCC supply
- Operates up to 1 Mbit/s data signaling rate
- Low supply current: 300 μA typical
- External capacitors required: 4 × 0.1 μF
- Accepts 5-V logic input with 3.3-V supply
- Latch-up performance exceeds 100 mA per JESD 78, class II
- ±15-kV IEC ESD protection for RS-232 pins
- Two line drivers and two line receivers with dual charge-pump circuit
- Outputs protected against shorts to ground
Applications
- Industrial PCs
- Wired networking
- Data center and enterprise computing
- Battery-powered systems
- PDAs
- Notebooks
- Palmtop PCs
- Hand-held equipment
Q & A
- What is the operating voltage range of the SN65C3232EPWR?
The SN65C3232EPWR operates with a supply voltage (VCC) range of 3 V to 5.5 V.
- What is the maximum data signaling rate supported by the SN65C3232EPWR?
The device supports data signaling rates up to 1 Mbit/s.
- What kind of ESD protection does the SN65C3232EPWR offer?
The device offers ±15-kV IEC ESD protection for RS-232 pins.
- What are the typical supply current requirements of the SN65C3232EPWR?
The typical supply current is 300 μA.
- What external components are required for the SN65C3232EPWR to operate?
Four external capacitors (4 × 0.1 μF) are required.
- Can the SN65C3232EPWR accept 5-V logic input with a 3.3-V supply?
- What is the latch-up performance of the SN65C3232EPWR?
The latch-up performance exceeds 100 mA per JESD 78, class II.
- What are the typical operating temperatures for the SN65C3232EPWR?
The operating free-air temperature range is -40°C to 85°C.
- How many line drivers and receivers does the SN65C3232EPWR have?
The device has two line drivers and two line receivers.
- What is the purpose of the dual charge-pump circuit in the SN65C3232EPWR?
The dual charge-pump circuit allows operation from a single 3-V to 5.5-V supply.
