Maxim > Products > Interface, Interconnect, Signal Integrity > MAX3320A, MAX3320B, MAX3320L, ...

MAX3320A, MAX3320B, MAX3320L, MAX3320T

3V to 5.5V, Up to 250kbps True RS-232 Transceiver with 4µA AutoShutdown Plus and Power On Reset
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Status Explanations for product status codes

Active: In Production.

Description

The MAX3320 combines a microprocessor (µP) supervisory circuit with an RS-232 transceiver. The power-on reset performs a single function: it asserts a reset signal whenever the VCC supply voltage declines below a preset threshold, staying asserted for at least 100ms after VCC rises above the reset threshold. The MAX3320 has an active-low RESET output, which is guaranteed to be in the correct state for VCC down to 1V. The reset comparator is designed to ignore fast transients on VCC. Reset thresholds suitable for operation with a variety of supply voltages are available.

The MAX3320 transceivers have a proprietary low-dropout transmitter output stage, enabling true RS-232 performance with a dual charge pump powered from a +3V to +5.5V supply. The device requires only four small 0.1µF external charge-pump capacitors, and is guaranteed to run at data rates of up to 250kbps. It comes in the space-saving 20-pin SSOP package.
 

Data Sheet

Download this datasheet in PDF formatDownload Rev 0 (PDF, 128kB)
Send this datasheet to any email addressE-Mail

Key Features

  • Precise Monitoring of 5V and 3.3V Power-Supply Voltages:
    • 100ms (min) Power-On active-low RESET Pulse Width
    • Power-Supply Transient Immunity
    • Guaranteed active-low RESET Valid to VCC = 1V
  • 4µA Supply Current Achieved with AutoShutdown Plus™
  • Receivers Always Active
  • Power-On Reset Always Active
  • 4µA Low-Power Shutdown
  • 250kbps Guaranteed Data Rate
 

Applications/Uses

  • Handheld Equipment
  • Palmtop Computers
  • Peripherals
  • Portable Battery-Powered Equipment
  • Printers
   

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
MAX3320 
3.3
5
 2 2 250 0.45 Yes 4 0.1 2
SSOP/20
 $2.02 @1k
See All RS-232 Line Driver/Receivers (152)
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.


Diagram

MAX3320A, MAX3320B, MAX3320L, MAX3320T: Typical Operating Circuit
Typical Operating Circuit

Application Notes

Tutorial 761   Automatic Test Equipment on a Budget

Product Guides

Interface (PDF)

Reliability Reports

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Software/Models

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Ordering Information

Filters: Part Number: Package: Temperature: Tape and Reel Sample
Part Number Free
Sample		 Buy Status Explanations for product status codes Package:
TYPE PINS FOOTPRINT
DRAWING  CODE/VAR * 		Temp RoHS/Lead-Free?
Materials Analysis
MAX3320ACAP    
Active SSOP;20 pin;57.9 mm²
Outline Drawing:21-0056 (PDF)
Land Pattern: 90-0094 (PDF)
Use pkgcode/variation: A20-1*
0°C to +70°C See data sheet
MAX3320ACAP+  
Active SSOP;20 pin;57.9 mm²
Outline Drawing:21-0056 (PDF)
Land Pattern: 90-0094 (PDF)
Use pkgcode/variation: A20+1*
0°C to +70°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX3320ACAP+T    
Active SSOP;20 pin

Land Pattern: Not Available

0°C to +70°C See data sheet
MAX3320ACAP-T    
Active SSOP;20 pin

Land Pattern: Not Available

0°C to +70°C See data sheet
MAX3320AEAP    
Active SSOP;20 pin;57.9 mm²
Outline Drawing:21-0056 (PDF)
Land Pattern: 90-0094 (PDF)
Use pkgcode/variation: A20-1*
-40°C to +85°C See data sheet
MAX3320AEAP+  
Active SSOP;20 pin;57.9 mm²
Outline Drawing:21-0056 (PDF)
Land Pattern: 90-0094 (PDF)
Use pkgcode/variation: A20+1*
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX3320AEAP+T    
Active SSOP;20 pin;57.9 mm²
Outline Drawing:21-0056 (PDF)
Land Pattern: 90-0094 (PDF)
Use pkgcode/variation: A20+1*
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX3320AEAP-T    
Active SSOP;20 pin

Land Pattern: Not Available

-40°C to +85°C See data sheet
MAX3320BCAP    
Active SSOP;20 pin;57.9 mm²
Outline Drawing:21-0056 (PDF)
Land Pattern: 90-0094 (PDF)
Use pkgcode/variation: A20-1*
0°C to +70°C See data sheet
MAX3320BCAP+  
Active SSOP;20 pin;57.9 mm²
Outline Drawing:21-0056 (PDF)
Land Pattern: 90-0094 (PDF)
Use pkgcode/variation: A20+1*
0°C to +70°C RoHS/Lead-Free: Lead Free
Materials Analysis
Part Number Free
Sample		 Buy Status Explanations for product status codes Package:
TYPE PINS FOOTPRINT
DRAWING  CODE/VAR * 		Temp RoHS/Lead-Free?
Materials Analysis
MAX3320BCAP+T    
Active SSOP;20 pin;57.9 mm²
Outline Drawing:21-0056 (PDF)
Land Pattern: 90-0094 (PDF)
Use pkgcode/variation: A20+1*
0°C to +70°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX3320BCAP-T    
Active SSOP;20 pin;57.9 mm²
Outline Drawing:21-0056 (PDF)
Land Pattern: 90-0094 (PDF)
Use pkgcode/variation: A20-1*
0°C to +70°C See data sheet
MAX3320BEAP    
Active SSOP;20 pin;57.9 mm²
Outline Drawing:21-0056 (PDF)
Land Pattern: 90-0094 (PDF)
Use pkgcode/variation: A20-1*
-40°C to +85°C See data sheet
MAX3320BEAP+  
Active SSOP;20 pin;57.9 mm²
Outline Drawing:21-0056 (PDF)
Land Pattern: 90-0094 (PDF)
Use pkgcode/variation: A20+1*
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX3320BEAP+T    
Active SSOP;20 pin;57.9 mm²
Outline Drawing:21-0056 (PDF)
Land Pattern: 90-0094 (PDF)
Use pkgcode/variation: A20+1*
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX3320BEAP-T    
Active SSOP;20 pin

Land Pattern: Not Available

-40°C to +85°C See data sheet
MAX3320LCAP    
Active SSOP;20 pin;57.9 mm²
Outline Drawing:21-0056 (PDF)
Land Pattern: 90-0094 (PDF)
Use pkgcode/variation: A20-1*
0°C to +70°C See data sheet
MAX3320LCAP-T    
Active SSOP;20 pin

Land Pattern: Not Available

0°C to +70°C See data sheet
MAX3320LEAP    
Active SSOP;20 pin;57.9 mm²
Outline Drawing:21-0056 (PDF)
Land Pattern: 90-0094 (PDF)
Use pkgcode/variation: A20-1*
-40°C to +85°C See data sheet
MAX3320LEAP-T    
Active SSOP;20 pin

Land Pattern: Not Available

-40°C to +85°C See data sheet
Part Number Free
Sample		 Buy Status Explanations for product status codes Package:
TYPE PINS FOOTPRINT
DRAWING  CODE/VAR * 		Temp RoHS/Lead-Free?
Materials Analysis
MAX3320TCAP    
Active SSOP;20 pin;57.9 mm²
Outline Drawing:21-0056 (PDF)
Land Pattern: 90-0094 (PDF)
Use pkgcode/variation: A20-1*
0°C to +70°C See data sheet
MAX3320TCAP+  
Active SSOP;20 pin;57.9 mm²
Outline Drawing:21-0056 (PDF)
Land Pattern: 90-0094 (PDF)
Use pkgcode/variation: A20+1*
0°C to +70°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX3320TCAP+T    
Active SSOP;20 pin;57.9 mm²
Outline Drawing:21-0056 (PDF)
Land Pattern: 90-0094 (PDF)
Use pkgcode/variation: A20+1*
0°C to +70°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX3320TCAP-T    
Active SSOP;20 pin

Land Pattern: Not Available

0°C to +70°C See data sheet
MAX3320TEAP    
Active SSOP;20 pin;57.9 mm²
Outline Drawing:21-0056 (PDF)
Land Pattern: 90-0094 (PDF)
Use pkgcode/variation: A20-1*
-40°C to +85°C See data sheet
MAX3320TEAP+  
Active SSOP;20 pin;57.9 mm²
Outline Drawing:21-0056 (PDF)
Land Pattern: 90-0094 (PDF)
Use pkgcode/variation: A20+1*
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX3320TEAP+T    
Active SSOP;

Land Pattern: Not Available

-40°C to +85°C See data sheet
MAX3320TEAP-T    
Active SSOP;20 pin

Land Pattern: Not Available

-40°C to +85°C See data sheet

Notes:
  1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
  2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
  3. 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.
  4. * 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.

Notes and Comments

AutoShutdown Plus, On-Board Reset Voltage Monitor

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Document Ref.: 19-1253 Rev 0; 1997-08-01
This page last modified: 2007-07-19

 


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