Overview
The MAX3238EIPWR, produced by Texas Instruments, is a highly integrated RS-232 transceiver designed to operate from a single 3.0V to 5.5V supply. This device is ideal for battery-powered systems, PDAs, notebooks, subnotebooks, laptops, palmtop PCs, hand-held equipment, modems, and printers. It features a proprietary, high-efficiency dual charge-pump power supply and low-dropout transmitters to deliver true RS-232 performance.
The MAX3238EIPWR includes five line drivers, three line receivers, and an always-active noninverting receiver output, which allows for continuous monitoring of external devices even when the main power is off. The device also includes an auto-powerdown plus feature that disables the transmitters and receivers when no valid signal is detected, reducing power consumption to 1 µA typical in standby mode.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 3.0 | - | 5.5 | V |
| Operating Temperature | -40 | - | 85 | °C |
| Data Signaling Rate | - | - | 250 | kbit/s |
| Driver Output Slew Rate | - | - | 30 | V/µs |
| ESD Protection | ±15 | - | - | kV (HBM) |
| Standby Current | - | 1 | - | µA |
| Receiver Input Voltage Range | -25 | - | 25 | V |
| High-Level Output Voltage (VOH) | 5 | 5.4 | - | V |
| Low-Level Output Voltage (VOL) | -5 | -5.4 | - | V |
Key Features
- Operates from a single 3.0V to 5.5V supply.
- Includes five line drivers and three line receivers.
- Dual charge-pump circuit provides ±15-kV ESD protection.
- Always-active noninverting receiver output (ROUT1B) for continuous monitoring.
- Auto-powerdown plus feature to reduce power consumption when no valid signal is detected.
- Low standby current of 1 µA typical.
- Meets or exceeds the requirements of TIA/EIA-232-F and ITU v.28 standards.
- Accepts 5-V logic input with 3.3-V supply.
- Available in space-saving SSOP and TSSOP packages.
Applications
- Battery-powered systems.
- PDAs, notebooks, subnotebooks, laptops, and palmtop PCs.
- Hand-held equipment.
- Modems and printers.
- Any system requiring true RS-232 performance from a low-voltage supply.
Q & A
- What is the operating voltage range of the MAX3238EIPWR?
The MAX3238EIPWR operates from a single 3.0V to 5.5V supply.
- How many line drivers and receivers does the MAX3238EIPWR have?
The MAX3238EIPWR includes five line drivers and three line receivers.
- What is the ESD protection level of the MAX3238EIPWR?
The MAX3238EIPWR has ±15-kV ESD protection using the Human-Body Model (HBM).
- What is the purpose of the auto-powerdown plus feature?
The auto-powerdown plus feature disables the transmitters and receivers when no valid signal is detected, reducing power consumption to 1 µA typical in standby mode.
- Can the MAX3238EIPWR accept 5-V logic input with a 3.3-V supply?
Yes, the MAX3238EIPWR can accept 5-V logic input with a 3.3-V supply.
- What are the typical applications of the MAX3238EIPWR?
The MAX3238EIPWR is typically used in battery-powered systems, PDAs, notebooks, subnotebooks, laptops, palmtop PCs, hand-held equipment, modems, and printers.
- What is the maximum data signaling rate of the MAX3238EIPWR?
The MAX3238EIPWR supports data signaling rates up to 250 kbit/s.
- What is the driver output slew rate of the MAX3238EIPWR?
The driver output slew rate of the MAX3238EIPWR is up to 30 V/µs.
- What is the standby current of the MAX3238EIPWR?
The standby current of the MAX3238EIPWR is 1 µA typical.
- What standards does the MAX3238EIPWR meet or exceed?
The MAX3238EIPWR meets or exceeds the requirements of TIA/EIA-232-F and ITU v.28 standards.
