Overview
The MAX3227ECDBR, produced by Texas Instruments, is a 3-V to 5.5-V single-channel RS-232 line driver/receiver. This device is designed to provide an electrical interface between an asynchronous communication controller and a serial-port connector. It features a dual charge-pump circuit and offers robust ESD protection, making it suitable for a variety of applications, especially in battery-powered and portable devices.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 16-SSOP (DB) |
| Pins | 16 |
| Operating Temperature Range | 0°C to 70°C (MAX3227EC), -40°C to 85°C (MAX3227EI) |
| Supply Voltage | 3-V to 5.5-V |
| Data Signaling Rate | At least 1 Mbit/s |
| Driver Output Slew Rate | Maximum of 30-V/μs |
| Standby Current | 1 μA (typical) |
| External Capacitors | 4 × 0.1 μF |
| ESD Protection | ±15 kV (Human-Body Model), ±8 kV (IEC61000-4-2, Contact Discharge), ±15 kV (IEC61000-4-2, Air-Gap Discharge) |
Key Features
- Meets or exceeds the requirements of TIA/EIA-232-F and ITU v.28 standards
- Operates with 3-V to 5.5-V VCC supply
- Accepts 5-V logic input with 3.3-V supply
- Designed to be interchangeable with Maxim™ MAX3227E
- Latch-up performance exceeds 100 mA per JESD 78, Class II
- Auto-powerdown plus feature for power savings
- Packaged in plastic shrink small-outline package (SSOP)
- Logic-level output (READY) indicates when the charge pump is regulating and the device is ready to begin transmitting
Applications
- Battery-powered, hand-held, and portable equipment
- PDAs and palmtop PCs
- Notebooks, sub-notebooks, and laptops
- Digital cameras
- Mobile phones and wireless devices
Q & A
- What is the operating voltage range of the MAX3227ECDBR?
The MAX3227ECDBR operates with a supply voltage range of 3-V to 5.5-V. - What is the data signaling rate of the MAX3227ECDBR?
The device operates at data-signaling rates of at least 1 Mbit/s. - What kind of ESD protection does the MAX3227ECDBR offer?
The device offers ±15 kV ESD protection (Human-Body Model), ±8 kV ESD protection (IEC61000-4-2, Contact Discharge), and ±15 kV ESD protection (IEC61000-4-2, Air-Gap Discharge). - What is the standby current of the MAX3227ECDBR?
The standby current is typically 1 μA. - Does the MAX3227ECDBR support auto-powerdown?
Yes, the device features an auto-powerdown plus feature that automatically disables drivers for power savings. - What type of package is the MAX3227ECDBR available in?
The device is packaged in a plastic shrink small-outline package (SSOP) with 16 pins. - What are the operating temperature ranges for the MAX3227ECDBR?
The MAX3227EC is characterized for operation from 0°C to 70°C, and the MAX3227EI is characterized for operation from -40°C to 85°C. - Can the MAX3227ECDBR accept 5-V logic input with a 3.3-V supply?
Yes, the device can accept 5-V logic input with a 3.3-V supply. - What is the purpose of the READY output in the MAX3227ECDBR?
The READY output asserts when the charge pump is regulating and the device is ready to begin transmitting. - Is the MAX3227ECDBR designed to be interchangeable with other devices?
Yes, it is designed to be interchangeable with Maxim™ MAX3227E.
