Overview
The SN65C3232, produced by Texas Instruments, is a dual-channel RS-232 transceiver designed to provide the electrical interface between an asynchronous communication controller and a serial-port connector. This device is part of the SN65C3232 and SN75C3232 family, which includes two line drivers, two line receivers, and a dual charge-pump circuit. It operates with a single 3-V to 5.5-V supply and supports data signaling rates up to 1 Mbit/s. The SN65C3232 is particularly notable for its high ESD protection, meeting the requirements of TIA/EIA-232-F and providing robust protection against electrostatic discharge.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VCC) | 3.3 V to 5.5 V | V |
| Data Signaling Rate | Up to 1 Mbit/s | Mbit/s |
| Supply Current (ICC) | 0.3 mA (typical) | mA |
| External Capacitors | 4 × 0.1 μF | μF |
| Driver Output Slew Rate | 14 V/μs to 150 V/μs | V/μs |
| ESD Protection (HBM) | ±15 kV | V |
| Operating Temperature (SN65C3232) | -40°C to 85°C | °C |
| Package Options | D (SOIC), DB (SSOP), DW (SOIC), PW (TSSOP) |
Key Features
- Operates with a single 3-V to 5.5-V supply.
- Supports data signaling rates up to 1 Mbit/s.
- Low supply current: 300 μA typical.
- Accepts 5-V logic input with a 3.3-V supply.
- High ESD protection: ±15 kV using the human-body model (HBM) and IEC 61000-4-2 air-gap and contact discharge.
- Latch-up performance exceeds 100 mA per JESD 78, class II.
- Outputs are protected against shorts to ground.
Applications
- Industrial PCs
- Wired networking
- Data center and enterprise computing
- Battery-powered systems
- Notebooks and laptops
- Palmtop PCs and hand-held equipment
- PDAs
Q & A
- What is the operating voltage range of the SN65C3232?
The SN65C3232 operates with a single 3-V to 5.5-V supply.
- What is the maximum data signaling rate supported by the SN65C3232?
The device supports data signaling rates up to 1 Mbit/s.
- What is the typical supply current of the SN65C3232?
The typical supply current is 300 μA.
- Does the SN65C3232 support 5-V logic input with a 3.3-V supply?
- What level of ESD protection does the SN65C3232 offer?
The device offers ±15 kV ESD protection using the human-body model (HBM) and IEC 61000-4-2 air-gap and contact discharge.
- What are the package options available for the SN65C3232?
The device is available in D (SOIC), DB (SSOP), DW (SOIC), and PW (TSSOP) packages.
- What is the operating temperature range for the SN65C3232?
The operating temperature range is -40°C to 85°C.
- Does the SN65C3232 meet any specific industry standards?
- How many external capacitors are required for the SN65C3232?
- What is the driver output slew rate of the SN65C3232?
The driver output slew rate is 14 V/μs to 150 V/μs.
