Overview
The SN65C3221PWR, produced by Texas Instruments, is a 3-V to 5.5-V multichannel RS-232 line driver/receiver. This device is designed to provide the electrical interface between an asynchronous communication controller and the serial-port connector. It features a dual charge-pump circuit with ±15-kV ESD protection on serial-port connection pins, including GND. The SN65C3221PWR operates at data signaling rates up to 1 Mbit/s and includes a driver output slew rate of 24 V/µs to 150 V/µs, making it suitable for various high-speed serial communication applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | TSSOP | |
| Number of Pins | 16 | |
| Operating Temperature Range | -40 to 85 | °C |
| Data Rate (Max) | 1000 | kbps |
| Drivers Per Package | 1 | |
| Receivers Per Package | 1 | |
| ESD HBM | ±15 | kV |
| Main Supply Voltage (Nom) | 3.3, 5 | V |
| Logic Voltage (Min) | 3.3 | V |
| Standby Current | 1 | µA |
| External Capacitors | 4 x 0.1 µF |
Key Features
- Operates with 3-V to 5.5-V VCC supply.
- Operates up to 1 Mbit/s data signaling rate.
- Low standby current: 1 µA typical.
- Requires four small external capacitors (0.1 µF each).
- Accepts 5-V logic input with 3.3-V supply.
- RS-232 bus-pin ESD protection exceeds ±15 kV using human-body model (HBM).
- Auto-powerdown feature automatically disables drivers for power savings.
Applications
- Industrial PCs
- Wired networking
- Data center and enterprise computing
- Battery-powered systems
- PDAs, notebooks, laptops, and palmtop PCs
- Hand-held equipment
Q & A
- What is the operating temperature range of the SN65C3221PWR?
The operating temperature range is -40°C to 85°C.
- What is the maximum data rate supported by the SN65C3221PWR?
The device supports up to 1 Mbit/s data signaling rate.
- How many drivers and receivers are included in the SN65C3221PWR?
The device includes one driver and one receiver.
- What is the ESD protection level of the SN65C3221PWR?
The device has ±15 kV ESD protection using the human-body model (HBM).
- Does the SN65C3221PWR support auto-powerdown?
Yes, it features an auto-powerdown feature for power savings.
- What type of package does the SN65C3221PWR come in?
The device comes in a TSSOP (Thin Shrink Small Outline Package) with 16 pins.
- Is the SN65C3221PWR RoHS compliant?
Yes, the SN65C3221PWR is RoHS compliant.[
- What are the typical standby current and supply current values for the SN65C3221PWR?
The typical standby current is 1 µA, and the supply current is 1 mA when auto-powerdown is disabled.[
- Can the SN65C3221PWR accept 5-V logic input with a 3.3-V supply?
Yes, it can accept 5-V logic input with a 3.3-V supply.[
- What is the purpose of the INVALID output in the SN65C3221PWR?
The INVALID output notifies the user if an RS-232 signal is present at the receiver input, indicating valid or invalid data based on the receiver input voltage levels.[
