Overview
The MAX3238IPWG4Q1, produced by Texas Instruments, is a 3-V to 5.5-V multichannel RS-232 line driver/receiver designed for robust and efficient serial communication. This device is particularly suited for automotive and other applications requiring high reliability and ESD protection. It features five line drivers and three line receivers, along with a dual charge-pump circuit that enables operation from a single supply voltage. The MAX3238IPWG4Q1 meets or exceeds the requirements of TIA/EIA-232-F and ITU v.28 standards, ensuring compatibility with a wide range of serial communication systems.
Key Specifications
| Parameter | Min | Typical | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 3.0 | 3.3 / 5.0 | 5.5 | V |
| Operating Temperature (TA) | -40 | - | 85 | °C |
| Driver Output Voltage (VOH/VOL) | -5.4 / 5.4 | - | -5 / 5 | V |
| Maximum Data Rate | 150 | 250 | - | kbit/s |
| ESD Protection | ±15 kV | - | - | - |
| Standby Current | - | 1 µA | - | - |
| External Capacitors | 4 × 0.1 µF | - | - | - |
Key Features
- Operates with 3-V to 5.5-V VCC supply, allowing flexibility in system design.
- Five line drivers and three line receivers, providing multiple channels for serial communication.
- Dual charge-pump circuit for generating the necessary RS-232 voltage levels from a single supply.
- Low standby current of 1 µA typical, reducing power consumption in idle states.
- Accepts 5-V logic input with a 3.3-V supply, enhancing compatibility with various logic levels.
- Always-active noninverting receiver output (ROUT1B) for continuous monitoring of the ring indicator.
- ESD protection exceeds ±15 kV using the Human-Body Model (HBM), ensuring robustness against electrical surges.
- Meets or exceeds TIA/EIA-232-F and ITU v.28 standards for reliable serial communication.
- Auto-powerdown plus feature to reduce power consumption when the device is inactive.
Applications
- Notebook and subnotebook computer applications requiring serial communication interfaces.
- Automotive systems where high reliability and ESD protection are critical.
- Industrial control systems that need robust serial communication capabilities.
- Medical devices requiring reliable and low-power serial interfaces.
- Any application needing multiple RS-232 channels with low power consumption and high ESD protection.
Q & A
- What is the operating voltage range of the MAX3238IPWG4Q1? The device operates with a supply voltage (VCC) range of 3.0 V to 5.5 V.
- How many line drivers and receivers does the MAX3238IPWG4Q1 have? It features five line drivers and three line receivers.
- What is the maximum data rate supported by the MAX3238IPWG4Q1? The device supports data rates up to 250 kbit/s.
- What level of ESD protection does the MAX3238IPWG4Q1 offer? It provides ESD protection exceeding ±15 kV using the Human-Body Model (HBM).
- Does the MAX3238IPWG4Q1 support auto-powerdown? Yes, it includes an auto-powerdown plus feature to reduce power consumption when inactive.
- What type of capacitors are required for the MAX3238IPWG4Q1? The device requires four external capacitors, typically 0.1 µF each.
- Is the MAX3238IPWG4Q1 suitable for automotive applications? Yes, it is qualified for automotive applications and meets relevant standards.
- Can the MAX3238IPWG4Q1 accept 5-V logic input with a 3.3-V supply? Yes, it can accept 5-V logic input even when the supply voltage is 3.3 V.
- What is the standby current of the MAX3238IPWG4Q1? The standby current is typically 1 µA.
- Does the MAX3238IPWG4Q1 meet TIA/EIA-232-F standards? Yes, it meets or exceeds the requirements of TIA/EIA-232-F and ITU v.28 standards.
