Overview
The SN65C3243DBRG4, produced by Texas Instruments, is a multichannel RS-232 compatible line driver/receiver integrated circuit. This device is designed to provide the electrical interface between an asynchronous communication controller and the serial-port connector. It consists of three line drivers, five line receivers, and a dual charge-pump circuit, which allows operation from a single 3-V to 5.5-V supply. The SN65C3243DBRG4 features ±15-kV ESD protection on RS-232 bus pins, ensuring robust performance in various applications.
Key Specifications
| Parameter | Min | Nom | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 3.0 | 3.3 / 5.0 | 3.6 / 5.5 | V |
| Operating Free-Air Temperature (TA) | –40 | 85 | °C (SN65C3243) | |
| Operating Free-Air Temperature (TA) | 0 | 70 | °C (SN75C3243) | |
| Driver and Control High-Level Input Voltage (VIH) | 2.0 (VCC=3.3V), 2.4 (VCC=5V) | V | ||
| Driver and Control Low-Level Input Voltage (VIL) | 0.8 | V | ||
| Receiver Input Voltage (VI) | –25 | 25 | V | |
| ESD Protection (Human-Body Model) | ±15 | kV | ||
| Data Signaling Rate | 250 kbit/s | 1 Mbit/s | ||
| Standby Current (ICC) | 1 μA (typical) | A |
Key Features
- Operates with 3-V to 5.5-V VCC supply
- Always-active noninverting receiver output (ROUT2B)
- Low standby current: 1 μA typical
- External capacitors: 4 × 0.1 μF
- Accepts 5-V logic input with 3.3-V supply
- Inter-operable with SN65C3238, SN75C3238
- Supports operation from 250 kbit/s to 1 Mbit/s
- RS-232 bus-pin ESD protection exceeds ±15 kV using Human-Body Model (HBM)
Applications
- Battery-powered systems
- Personal electronics
- Notebooks
- Laptops
- Palmtop PCs
- Hand-held equipment
Q & A
- What is the operating voltage range of the SN65C3243DBRG4?
The SN65C3243DBRG4 operates with a supply voltage (VCC) range of 3.0 V to 5.5 V.
- What is the maximum data signaling rate supported by this device?
The device supports data signaling rates up to 1 Mbit/s.
- What type of ESD protection does the SN65C3243DBRG4 offer?
The device offers ±15 kV ESD protection on RS-232 bus pins using the Human-Body Model (HBM).
- Can the SN65C3243DBRG4 operate with 5-V logic input on a 3.3-V supply?
- What is the typical standby current of the SN65C3243DBRG4?
The typical standby current is 1 μA.
- What are the external capacitor requirements for this device?
The device requires four external capacitors, each 0.1 μF.
- Is the SN65C3243DBRG4 inter-operable with other Texas Instruments devices?
- What are some common applications for the SN65C3243DBRG4?
- What is the operating temperature range for the SN65C3243 and SN75C3243?
- Does the SN65C3243DBRG4 have an always-active noninverting receiver output?
