Overview
The SN65C3243DWR, produced by Texas Instruments, is a 3- 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 and includes three line drivers, five line receivers, and robust ESD protection. The SN65C3243DWR is suitable for a wide range of applications, particularly in battery-powered systems and personal electronics, due to its low standby current and ability to operate from a single supply voltage.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VCC) | 3 to 5.5 | V |
| Data Signaling Rate | 250 kbit/s to 1 Mbit/s | |
| ESD Protection | ±15 kV | |
| Standby Current | 1 μA (typical) | A |
| External Capacitors | 4 × 0.1 μF | |
| Operating Temperature | –40°C to 85°C | °C |
| Package Type | SOIC-28, SSOP-28, TSSOP-28 |
Key Features
- Operates with 3-V to 5.5-V VCC supply
- Always-active noninverting receiver output (ROUT2B)
- Low standby current: 1 μA typical
- 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)
- Latch-up performance exceeds 100 mA per JESD 78, Class II
Applications
- Battery-powered systems
- Personal electronics
- Notebooks
- Laptops
- Palmtop PCs
- Hand-held equipment
Q & A
- What is the operating voltage range of the SN65C3243DWR?
The SN65C3243DWR operates with a supply voltage (VCC) range of 3 to 5.5 volts. - What is the maximum data signaling rate supported by the SN65C3243DWR?
The device supports data signaling rates up to 1 Mbit/s. - What level of ESD protection does the SN65C3243DWR offer?
The SN65C3243DWR offers ±15 kV ESD protection using the Human-Body Model (HBM). - What is the typical standby current of the SN65C3243DWR?
The typical standby current is 1 μA. - What types of packages are available for the SN65C3243DWR?
The device is available in SOIC-28, SSOP-28, and TSSOP-28 packages. - Can the SN65C3243DWR 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 are some common applications for the SN65C3243DWR?
Common applications include battery-powered systems, personal electronics, notebooks, laptops, palmtop PCs, and hand-held equipment. - Does the SN65C3243DWR require external capacitors for operation?
Yes, it requires four external capacitors, each 0.1 μF. - Is the SN65C3243DWR inter-operable with other Texas Instruments devices?
Yes, it is inter-operable with SN65C3238 and SN75C3238. - What is the operating temperature range of the SN65C3243DWR?
The operating temperature range is –40°C to 85°C.
