Overview
The SN65C3243DBR, produced by Texas Instruments, is a multichannel RS-232 line driver/receiver designed to provide an electrical interface between an asynchronous communication controller and a serial-port connector. This device features three line drivers, five line receivers, and a dual charge-pump circuit, offering robust ESD protection of ±15 kV using the Human-Body Model (HBM). It operates with a single 3-V to 5.5-V supply and includes an always-active noninverting receiver output (ROUT2B), enabling data transmission even when the device is powered down. The SN65C3243DBR supports data signaling rates up to 1 Mbit/s and is suitable for various applications requiring reliable serial communication.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SSOP (DB) | - |
| Pins | 28 | - |
| Operating Temperature Range | -40 to 85 | °C |
| Supply Voltage | 3 to 5.5 | V |
| Driver and Control Input Voltage | 0 to 5.5 | V |
| Receiver Input Voltage | -25 to 25 | V |
| Data Signaling Rate | Up to 1 Mbit/s | - |
| ESD Protection | ±15 kV (HBM) | - |
| Standby Current | 1 µA (Typical) | - |
| External Capacitors | 4 × 0.1 µF | - |
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 SN65C3243DBR?
The SN65C3243DBR operates with a supply voltage range of 3 V to 5.5 V.
- How many line drivers and receivers does the SN65C3243DBR have?
The device features three line drivers and five line receivers.
- What is the maximum data signaling rate supported by the SN65C3243DBR?
The device supports data signaling rates up to 1 Mbit/s.
- What level of ESD protection does the SN65C3243DBR offer?
The device offers ESD protection exceeding ±15 kV using the Human-Body Model (HBM).
- Can the SN65C3243DBR accept 5-V logic input with a 3.3-V supply?
- What is the typical standby current of the SN65C3243DBR?
The typical standby current is 1 µA.
- What external capacitors are required for the SN65C3243DBR?
The device requires four external capacitors of 0.1 µF each.
- Is the SN65C3243DBR inter-operable with other Texas Instruments devices?
- What is the operating temperature range of the SN65C3243DBR?
The operating temperature range is -40°C to 85°C.
- What package types are available for the SN65C3243DBR?
The device is available in SSOP (DB), SOIC (DW), and TSSOP (PW) packages.
