MAX221E：±15kV ESD-Protected, +5V, 1µA, Single RS-232 Transceiver with AutoShutdown
Industry's Smallest, Low-Power, Single RS-232 Transceiver Featuring ±15kV ESD Protection
The MAX221E 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 MAX221E features enhanced electrostatic discharge (ESD) protection. Both the transmitter output and receiver input are protected to ±15kV using the IEC 1000-4-2 Air-Gap Discharge Method, to ±8kV using the IEC 1000-4-2 Contact Discharge Method, and to ±15kV using the Human Body Model. The MAX221E 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 MAX221E 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 MAX221E 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.
Key Features
| MAX221E: Typical Operating Circuit Applications/Uses
|
DataSheet
| title | Download file |
|---|---|
| MAX221E Data Sheet | MAX221E.pdf |
Parametrics
| Part Number | VSUPPLY (V) | Tx | Rx | Data Rate (kbps) | ICC (mA) | Internal Charge Pump | Ext. Caps | Cap. Value (µF) | ESD Protect. (±kV) | Rx Active in Shutdn | Package/Pins | Budgetary Price |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | typ | nom | See Notes | |||||||||
| MAX221E | 5 | 1 | 1 | 250 | 5 | Yes | 4 | 0.1 | 15 | 1 | SSOP/16 TSSOP/16 | $1.70 @1k |
Quality and Environmental Data
Related Products
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Ordering Information
| Part Number | Status | Recommended Replacement | Package | Temp | RoHS |
|---|---|---|---|---|---|
| MAX221ECAE | No Longer Available | MAX221ECAE+ | SSOP,;16 pin;50 mm² | 0°C to +70°C | No |
| MAX221ECAE+ | Active | SSOP,;16 pin;50 mm² | 0°C to +70°C | Lead Free | |
| MAX221ECAE+T | Active | SSOP,;16 pin;50 mm² | 0°C to +70°C | Lead Free | |
| MAX221ECAE-T | No Longer Available | MAX221ECAE+T | SSOP;16 pin | 0°C to +70°C | See data sheet |
| MAX221ECUE | No Longer Available | MAX221ECUE+ | TSSOP,;16 pin;33.4 mm² | 0°C to +70°C | No |
| MAX221ECUE+ | Active | TSSOP,;16 pin;33.4 mm² | 0°C to +70°C | Lead Free | |
| MAX221ECUE+T | Active | TSSOP,;16 pin;33.4 mm² | 0°C to +70°C | Lead Free | |
| MAX221ECUE-T | No Longer Available | MAX221ECUE+T | TSSOP,;16 pin;33.4 mm² | 0°C to +70°C | No |
| MAX221EEAE | No Longer Available | MAX221EEAE+ | SSOP,;16 pin;50 mm² | -40°C to +85°C | No |
| MAX221EEAE+ | Active | SSOP,;16 pin;50 mm² | -40°C to +85°C | Lead Free | |
| Part Number | Status | Recommended Replacement | Package | Temp | RoHS |
| MAX221EEAE+T | Active | SSOP,;16 pin;50 mm² | -40°C to +85°C | Lead Free | |
| MAX221EEAE-T | No Longer Available | MAX221EEAE+T | SSOP,;16 pin;50 mm² | -40°C to +85°C | No |
| MAX221EEUE | No Longer Available | MAX221EEUE+ | TSSOP,;16 pin;33.4 mm² | -40°C to +85°C | No |
| MAX221EEUE+ | Active | TSSOP,;16 pin;33.4 mm² | -40°C to +85°C | Lead Free | |
| MAX221EEUE+T | Active | TSSOP,;16 pin;33.4 mm² | -40°C to +85°C | Lead Free | |
| MAX221EEUE-T | No Longer Available | MAX221EEUE+T | TSSOP,;16 pin;33.4 mm² | -40°C to +85°C | No |
- MAX221E.pdf MAX221E
- MAX221E.pdf MAX221E
- MAX221E.pdf MAX221E
- Determining Clock Accuracy Requirements for UART Communications MAX3206E
- RS-232 Features Explained MAX3381E
- Selecting and using RS-232 Interface Parts for Your Power Supply Voltages MAX3387E
- Design Considerations for Data-Lump Cables MAX3387E
- MAX221E.pdf MAX221E
- MAX221E.pdf MAX221E
