Overview
The TRS3243ECPWR, produced by Texas Instruments, is a 3-V to 5.5-V multichannel RS-232 line driver and receiver integrated circuit. This device is designed to provide a single-chip and single-supply interface for IBM PC/AT serial ports, ensuring compliance with TIA/EIA-232-F and ITU v.28 standards. It features advanced ESD protection, low power consumption, and flexible power management options, making it suitable for a variety of applications, particularly in battery-powered and portable electronic devices.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Supply Voltage (VCC) | 3 | 3.3 / 5 | 3.6 / 5.5 | V |
| Driver and Control Input Voltage (VIH) | 2 | - | 5.5 | V |
| Receiver Input Voltage | -25 | - | 25 | V |
| Operating Temperature | 0 | - | 70 / -40 to 85 (TRS3243EI) | °C |
| Data Rate | - | 250 / 500 | - | kbit/s |
| Driver Output Slew Rate | 4 | - | 30 | V/μs |
| Standby Current | - | 1 | - | μA |
| ESD Protection (HBM) | - | - | ±15 kV | - |
| ESD Protection (IEC61000-4-2, Contact Discharge) | - | - | ±8 kV | - |
| ESD Protection (IEC61000-4-2, Air-Gap Discharge) | - | - | ±15 kV | - |
Key Features
- Single-chip and single-supply interface for IBM PC/AT serial ports.
- Advanced ESD protection: ±15-kV HBM, ±8-kV IEC61000-4-2 contact discharge, and ±15-kV IEC61000-4-2 air-gap discharge.
- Operates with 3-V to 5.5-V VCC supply.
- Always-active noninverting receiver output (ROUT2B).
- Data transmission rate up to 500 kbit/s.
- Low standby current: 1 μA typical.
- Auto-powerdown feature to disable driver outputs when no valid RS-232 signal is sensed.
- Flexible control options for power management.
- Serial-mouse driveability.
- Meets or exceeds requirements of TIA/EIA-232-F and ITU v.28 standards.
Applications
- Battery-powered systems.
- Personal electronics.
- Notebooks and laptops.
- Palmtop PCs.
- Hand-held equipment.
Q & A
- What is the operating voltage range of the TRS3243ECPWR?
The TRS3243ECPWR operates with a supply voltage (VCC) range of 3-V to 5.5-V.
- What are the ESD protection levels of the TRS3243ECPWR?
The device has ESD protection levels of ±15-kV HBM, ±8-kV IEC61000-4-2 contact discharge, and ±15-kV IEC61000-4-2 air-gap discharge.
- What is the maximum data transmission rate of the TRS3243ECPWR?
The device can transmit data at rates up to 500 kbit/s.
- What is the standby current of the TRS3243ECPWR?
The standby current is typically 1 μA.
- Does the TRS3243ECPWR have an auto-powerdown feature?
Yes, the device has an auto-powerdown feature that disables driver outputs when no valid RS-232 signal is sensed.
- What are the package options for the TRS3243ECPWR?
The device is available in plastic small-outline (DW), shrink small-outline (DB), thin shrink small-outline (PW), and VQFN (RHB) packages.
- Is the TRS3243ECPWR compatible with industry-standard '3243E devices?
Yes, the TRS3243ECPWR is designed to be interchangeable with industry-standard '3243E devices.
- What is the purpose of the INVALID output in the TRS3243ECPWR?
The INVALID output notifies the user if an RS-232 signal is present at any receiver input, indicating valid or invalid data based on the signal levels.
- What are the operating temperature ranges for the TRS3243ECPWR?
The TRS3243ECPWR is characterized for operation from 0°C to 70°C, while the TRS3243EI is characterized for operation from –40°C to +85°C.
- Can the TRS3243ECPWR drive a serial mouse?
Yes, the device is capable of driving a serial mouse, but auto-powerdown should be disabled during this operation.
