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MAX221
+5V, 1µA, Single RS-232 Transceiver with AutoShutdown
Industry's Smallest, Low-Power Single RS-232 Transceiver
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Status
Active: In Production.
Description
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.
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Data Sheet
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Key Features
- 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
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Applications/Uses
- Industrial Systems
- Maintenance/Diagnostic Ports
- Set-Top Boxes
- Telecommunications
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Key Specifications:
| RS-232 Line Driver/Receivers |
| Part Number |
VSUPPLY
(V) |
Tx |
Rx |
Data Rate
(kbps) |
ICC
(mA) |
Internal Charge Pump |
Ext. Caps |
Cap. Value
(µF) |
Rx Active in Shutdn |
Package/Pins |
Budgetary Price |
| min |
typ |
nom |
See Notes |
| MAX221 |
5 |
1 |
1 |
250 |
5 |
Yes |
4 |
0.1 |
1 |
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$1.20 @1k |
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See All RS-232 Line Driver/Receivers (152)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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Diagram
 Typical Operating Circuit
Application Notes
Product Guides
Reliability Reports
Software/Models
Ordering Information
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Part Number
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Free
Sample |
Buy |
Status
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Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis
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| MAX221CAE
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Active |
SSOP;16 pin;50 mm²
Outline Drawing:21-0056 (PDF)
Land Pattern: 90-0106 (PDF)
Use pkgcode/variation: A16-2*
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0°C to +70°C
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See data sheet
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| MAX221CAE+
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Active |
SSOP;16 pin;50 mm²
Outline Drawing:21-0056 (PDF)
Land Pattern: 90-0106 (PDF)
Use pkgcode/variation: A16+2*
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0°C to +70°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX221CAE+T
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Active |
SSOP;16 pin;50 mm²
Outline Drawing:21-0056 (PDF)
Land Pattern: 90-0106 (PDF)
Use pkgcode/variation: A16+2*
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0°C to +70°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX221CAE-T
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Active |
SSOP;16 pin;50 mm²
Outline Drawing:21-0056 (PDF)
Land Pattern: 90-0106 (PDF)
Use pkgcode/variation: A16-2*
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0°C to +70°C
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See data sheet
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| MAX221CUE
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Active |
TSSOP;16 pin;33.4 mm²
Outline Drawing:21-0066 (PDF)
Land Pattern: 90-0117 (PDF)
Use pkgcode/variation: U16-2*
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0°C to +70°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX221CUE+
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Active |
TSSOP;16 pin;33.4 mm²
Outline Drawing:21-0066 (PDF)
Land Pattern: 90-0117 (PDF)
Use pkgcode/variation: U16+2*
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0°C to +70°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX221CUE+T
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Active |
TSSOP;16 pin;33.4 mm²
Outline Drawing:21-0066 (PDF)
Land Pattern: 90-0117 (PDF)
Use pkgcode/variation: U16+2*
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0°C to +70°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX221CUE-T
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Active |
TSSOP;16 pin;33.4 mm²
Outline Drawing:21-0066 (PDF)
Land Pattern: 90-0117 (PDF)
Use pkgcode/variation: U16-2*
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0°C to +70°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX221EAE
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Active |
SSOP;16 pin;50 mm²
Outline Drawing:21-0056 (PDF)
Land Pattern: 90-0106 (PDF)
Use pkgcode/variation: A16-2*
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-40°C to +85°C
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See data sheet
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| MAX221EAE+
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Active |
SSOP;16 pin;50 mm²
Outline Drawing:21-0056 (PDF)
Land Pattern: 90-0106 (PDF)
Use pkgcode/variation: A16+2*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
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Part Number
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Free
Sample |
Buy |
Status
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Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis
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| MAX221EAE+T
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Active |
SSOP;16 pin;50 mm²
Outline Drawing:21-0056 (PDF)
Land Pattern: 90-0106 (PDF)
Use pkgcode/variation: A16+2*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX221EAE-T
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Active |
SSOP;16 pin
Land Pattern: Not Available
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-40°C to +85°C
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See data sheet
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| MAX221EUE
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Active |
TSSOP;16 pin;33.4 mm²
Outline Drawing:21-0066 (PDF)
Land Pattern: 90-0117 (PDF)
Use pkgcode/variation: U16-2*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX221EUE+
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Active |
TSSOP;16 pin;33.4 mm²
Outline Drawing:21-0066 (PDF)
Land Pattern: 90-0117 (PDF)
Use pkgcode/variation: U16+2*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX221EUE+T
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Active |
TSSOP;16 pin;33.4 mm²
Outline Drawing:21-0066 (PDF)
Land Pattern: 90-0117 (PDF)
Use pkgcode/variation: U16+2*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX221EUE-T
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Active |
TSSOP;16 pin;33.4 mm²
Outline Drawing:21-0066 (PDF)
Land Pattern: 90-0117 (PDF)
Use pkgcode/variation: U16-2*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
Notes:
- Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
- Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
- Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
- * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
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Notes and Comments
Available in a 16-pin TSSOP package
Similar Products by Function
| MAX3221, MAX3223, MAX3243 |
1µA Supply-Current, True +3V to +5.5V RS-232 Transceivers with AutoShutdown |
| MAX3221E, MAX3223E, MAX3243E |
±15kV ESD-Protected, 1µA, 3.0V to 5.5V, 250kbps, RS-232 Transceivers with AutoShutdown |
| MAX3224, MAX3225, MAX3226, ... |
1µA Supply Current, 1Mbps, 3.0V to 5.5V, RS-232 Transceivers with AutoShutdown Plus |
| MAX3224E, MAX3225E, MAX3226E, ... |
±15kV ESD-Protected, 1µA, 1Mbps, 3.0V to 5.5V, RS-232 Transceivers with AutoShutdown Plus |
| MAX221E |
±15kV ESD-Protected, +5V, 1µA, Single RS-232 Transceiver with AutoShutdown |
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Similar Products by Application
Products with Similar Part Numbers
| MAX221E |
±15kV ESD-Protected, +5V, 1µA, Single RS-232 Transceiver with AutoShutdown |
Didn't Find What You Need?
Information Index
Document Ref.: 19-4323
Rev 0;
2000-05-01
This page last modified: 2007-06-04
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