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MAX3318E Datasheet(PDF) 1 Page - Texas Instruments

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Part No. MAX3318E
Description  2.5-V 460-kbps RS-232 TRANSCEIVER WITH ±15-kV ESD PROTECTION
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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MAX3318E Datasheet(HTML) 1 Page - Texas Instruments

 
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FEATURES
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20
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READY
C1+
V+
C1−
C2+
C2−
V−
DOUT2
RIN2
ROUT2
FORCEOFF
VCC
GND
DOUT1
RIN1
ROUT1
FORCEON
DIN1
DIN2
INVALID
DB OR PW PACKAGE
(TOP VIEW)
APPLICATIONS
DESCRIPTION/ORDERING INFORMATION
MAX3318E
2.5-V 460-kbps RS-232 TRANSCEIVER
WITH
±15-kV ESD PROTECTION
SLLS741 – JUNE 2006
ESD Protection for RS-232 I/O Pins
±15 kV (Human-Body Model)
±8 kV (IEC 61000-4-2, Contact Discharge)
±15 kV (IEC 61000-4-2, Air-Gap Discharge)
300-
µA Operating Supply Current
1-
µA Low-Power Standby (With Receivers
Active) Mode
Designed to Transmit at a Data Rate of
460 kbps
Auto-Power-Down Plus Option Features
Flexible Power-Saving Mode
Operates From a Single 2.25-V to 3-V VCC
Supply
Battery-Powered Systems
PDAs
Cellular Phones
Notebooks
Hand-Held Equipment
Pagers
The MAX3318E is a dual-driver, dual-receiver, RS-232-compatible transceiver. The device features
auto-power-down plus and enhanced electrostatic discharge (ESD) protection integrated into the chip. Driver
output and receiver input are protected to
±15 kV using the IEC 61000-4-2 Air-Gap Discharge method, ±8 kV
using the IEC 61000-4-2 Contact Discharge method, and
±15 kV using the Human-Body Model (HBM).
The device operates at a data rate of 460 kbps. The transceiver has a proprietary low-dropout driver output
stage, enabling RS-232-compatible operation from a 2.25-V to 3-V supply with a dual charge pump. The charge
pump requires only four 0.1-
µF capacitors and features a logic-level output (READY) that asserts when the
charge pump is regulating and the device is ready to begin transmitting.
The MAX3318E achieves a 1-
µA supply current using the auto-power-down feature. This device automatically
enters a low-power power-down mode when the RS-232 cable is disconnected or the drivers of the connected
peripherals are inactive for more than 30 s. The device turns on again when it senses a valid transition at any
driver or receiver input. Auto power down saves power without changes to the existing BIOS or operating
system.
This device is available in two space-saving packages: 20-pin SSOP and 20-pin TSSOP.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright © 2006, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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