MAX221
PRODUCTION+5V, 1µA, Single RS-232 Transceiver with AutoShutdown
Industry's Smallest, Low-Power Single RS-232 Transceiver
- Part Models
- 8
- 1ku List Price
- Starting From $2.46
Overview
- Single RS-232 Transceiver in a Small 16-Pin TSSOP Package
- 1µA Supply Current
- AutoShutdown Saves Power Without Changes to BIOS
- Guaranteed 250kbps Data Rate
The MAX221 is a +5V-powered, single transmit/receive RS-232 and V.28 communications interface with automatic shutdown/wake-up features and high data rate capabilities.
The MAX221 achieves a low 1µA supply current with Maxim's revolutionary AutoShutdown™ feature. AutoShutdown saves power without changes to the existing BIOS or operating system by entering low-power shutdown mode when the RS-232 cable is disconnected, or when the transmitter of the connected peripheral is off. The MAX221 wakes up and drives the active-low INVALID pin high when an active RS-232 cable is connected, signaling the host that a peripheral is connected to the communications port.
The MAX221 is available in a 16-pin SSOP package as well as a 16-pin TSSOP that uses 50% less board space than a 16-pin SO. For an equivalent RS-232 transceiver with enhanced ±15kV ESD protection, refer to the MAX221E data sheet.
Applications
- Industrial Systems
- Maintenance/Diagnostic Ports
- Set-Top Boxes
- Telecommunications
Documentation
Data Sheet 2
Technical Articles 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX221CAE+ | SSOP | ||
| MAX221CAE+T | SSOP | ||
| MAX221CUE+ | TSSOP_4.4 / TSSOP_6.1 | ||
| MAX221CUE+T | TSSOP_4.4 / TSSOP_6.1 | ||
| MAX221EAE+ | SSOP | ||
| MAX221EAE+T | SSOP | ||
| MAX221EUE+ | TSSOP_4.4 / TSSOP_6.1 | ||
| MAX221EUE+T | TSSOP_4.4 / TSSOP_6.1 |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Dec 11, 2018 - 1754N ASSEMBLY |
||
| MAX221CUE+ | PRODUCTION | |
| MAX221CUE+T | PRODUCTION | |
| MAX221EUE+ | PRODUCTION | |
| MAX221EUE+T | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Interface Transceivers 7 | ||
| MAX221E | PRODUCTION | ±15kV ESD-Protected, +5V, 1µA, Single RS-232 Transceiver with AutoShutdown |
| MAX3221 | PRODUCTION | +3V to +5.5V RS-232 Transceivers with AutoShutdown |
| MAX3221E | PRODUCTION | ±15kV ESD-Protected, 1µA, 3.0V to 5.5V, 250kbps, RS-232 Transceivers with AutoShutdown |
| MAX3226 | PRODUCTION | 1µA Supply Current, 1Mbps, 3.0V to 5.5V, RS-232 Transceivers with AutoShutdown Plus |
| MAX3226E | PRODUCTION | ±15kV ESD-Protected, 1µA, 1Mbps, 3.0V to 5.5V, RS-232 Transceivers with AutoShutdown Plus |
| MAX3227 | PRODUCTION | 1µA Supply Current, 1Mbps, 3.0V to 5.5V, RS-232 Transceivers with AutoShutdown Plus |
| MAX3227E | PRODUCTION | ±15kV ESD-Protected, 1µA, 1Mbps, 3.0V to 5.5V, RS-232 Transceivers with AutoShutdown Plus |