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MAX3385E
±15kV ESD-Protected, 3.0 to 5.5V, Low-Power, Up to 250kbps, True RS-232 Transceiver
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Status
Active: In Production.
Description
The MAX3385E is a 3V-powered EIA/TIA-232 and V.28/V.24 communications interface with low power requirements, high data-rate capabilities, and enhanced electrostatic discharge (ESD) protection. All transmitter outputs and receiver inputs are protected to ±15kV using IEC 1000-4-2 Air-Gap Discharge, ±8kV using IEC 1000-4-2 Contact Discharge, and ±15kV using the Human Body Model.
The transceiver has a proprietary low-dropout transmitter output stage, delivering true RS-232 performance from a +3.0V to +5.5V supply with a dual charge pump. The charge pump requires only four small 0.1µF capacitors for operation from a +3.3V supply. Each device is guaranteed to run at data rates of 250kbps while maintaining RS-232 output levels.
The MAX3385E has two receivers and two drivers. It features a 1µA shutdown mode that reduces power consumption and extends battery life in portable systems. Its receivers can remain active in shutdown mode, allowing external devices such as modems to be monitored using only 1µA supply current.
The MAX3385E is available in a space-saving SSOP package in either the commercial (0°C to +70°C) or extended-industrial (-40°C to +85°C) temperature range.
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Data Sheet
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Key Features
- ESD Protection for RS-232 I/O Pins
- ±15kV-Human Body Model
- ±8kV-IEC 1000-4-2, Contact Discharge
- ±15kV-IEC 1000-4-2, Air-Gap Discharge
- Latchup Free
- 300µA Supply Current
- 1µA Low-Power Shutdown with Receivers Active
- 250kbps Guaranteed Data Rate
- 250µs Time to Exit Shutdown with 3-kilohm Load on V+
- 6V/µs Guaranteed Slew Rate
- Meets EIA/TIA-232 Specifications Down to 3.0V
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Applications/Uses
- Battery-Powered Applications
- Handheld Equipment
- Peripherals
- Printers
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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) |
ESD Protect.
(±kV) |
Rx Active in Shutdn |
Package/Pins |
| min |
typ |
nom |
| MAX3385E |
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2 |
2 |
250 |
0.3 |
Yes |
5 |
0.1 |
15 |
2 |
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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
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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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| MAX3385ECAP
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Active |
SSOP;20 pin;57.9 mm²
Outline Drawing:21-0056 (PDF)
Land Pattern: 90-0094 (PDF)
Use pkgcode/variation: A20-2*
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0°C to +70°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX3385ECAP-T
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Active |
SSOP;20 pin;57.9 mm²
Outline Drawing:21-0056 (PDF)
Land Pattern: 90-0094 (PDF)
Use pkgcode/variation: A20-2*
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0°C to +70°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX3385ECWN
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Active |
SOIC(W);18 pin;125.1 mm²
Outline Drawing:21-0042 (PDF)
Land Pattern: 90-0181 (PDF)
Use pkgcode/variation: W18-2*
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0°C to +70°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX3385ECWN-T
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Active |
W.SO;18 pin
Land Pattern: Not Available
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0°C to +70°C
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See data sheet
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| MAX3385EEAP
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Active |
SSOP;20 pin;57.9 mm²
Outline Drawing:21-0056 (PDF)
Land Pattern: 90-0094 (PDF)
Use pkgcode/variation: A20-2*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX3385EEAP-T
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Active |
SSOP;
Land Pattern: Not Available
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-40°C to +85°C
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See data sheet
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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
ESD Protection for RS-232 I/O pins, latchup free, 1µA low-power shutdown with receivers ActiveMeets EIA/TIA-232 specifications down to 3.0V
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Information Index
Document Ref.: 19-1437
Rev 1;
1999-10-01
This page last modified: 2010-05-06
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