MAX3380ECUP Maxim Integrated Products, MAX3380ECUP Datasheet

LINE TRANSEIVER CMOS 2PIN TSSOP

MAX3380ECUP

Manufacturer Part Number
MAX3380ECUP
Description
LINE TRANSEIVER CMOS 2PIN TSSOP
Manufacturer
Maxim Integrated Products
Type
Transceiverr
Datasheet

Specifications of MAX3380ECUP

Number Of Drivers/receivers
2/2
Protocol
RS232
Voltage - Supply
2.4 V ~ 5.5 V
Mounting Type
Surface Mount
Package / Case
20-TSSOP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
Q1782234

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+2.35V to +5.5V, 1µA, 2Tx/2Rx RS-232 Transceivers
The MAX3380E/MAX3381E are +2.35V to +5.5V-pow-
ered EIA/TIA-232 and V.28/V.24 communication inter-
faces with low power requirements, high data-rate
capabilities, and enhanced electrostatic discharge
(ESD) protection on both the TTL and RS-232 sides.
The MAX3380E/MAX3381E have two receivers and two
transmitters. All RS-232 inputs, outputs, and logic input
pins are protected to ±15kV using IEC 1000-4-2 Air-
Gap Discharge method and the Human Body Model,
and ±8kV using IEC 1000-4-2 Contact Discharge
method.
The proprietary low-dropout transmitter output stage
enables true RS-232 performance from a +3.1V to
+5.5V supply with a dual charge pump. The parts
reduce the transmitter output levels to RS-232-compati-
ble levels with no increase in supply current for sup-
plies less than +3.1V and greater than +2.35V. The
+2.35V to +5.5V operating range is fully compatible
with lithium-ion (Li+) batteries. The charge pump
requires only four small 0.1µF capacitors for operation.
The MAX3380E/MAX3381E transceivers use Maxim’s
revolutionary AutoShutdown Plus™ feature to auto-
m a t i c a l l y e n t e r a 1 µ A s h u t d o w n m o d e . T h e s e
devices shut down the on-board power supply and
drivers when they do not sense a valid signal transi-
tion for 30 seconds on either the receiver or trans-
mitter inputs.
The MAX3380E is capable of transmitting data at
rates of 460kbps while maintaining RS-232 output
levels, and the MAX3381E operates at data rates up
to 250kbps. The MAX3381E offers a slower slew rate
for applications where noise and EMI are issues. The
MAX3380E/MAX3381E have a unique V
allows interoperation in mixed-logic voltage systems
down to +1.65V. Both input and output logic levels
are referenced to the V
are available in a space-saving TSSOP package.
19-2128; Rev 0; 8/01
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Pin Configuration appears at end of data sheet.
AutoShutdown Plus is a trademark of Maxim Integrated Products
Cell Phone Data Lump Cables
PDA Data Lump Cables
GPS Receivers
Digital Cameras
with ±15kV ESD-Protected I/O and Logic Pins
________________________________________________________________ Maxim Integrated Products
L
General Description
pin. The MAX3380E/MAX3381E
Applications
L
pin that
♦ ±15kV ESD Protection on All CMOS and RS-232
♦ Operates Over Entire Li+ Battery Range
♦ Low Logic Threshold Down to +1.65V for
♦ 1µA Low-Power AutoShutdown Plus Mode
♦ Compatible with Next-Generation GSM Data Rates
♦ 20-Pin TSSOP Package
TTL/CMOS
MAX3380ECUP
MAX3380EEUP
MAX3381ECUP
MAX3381EEUP
TTL/CMOS
Inputs and Outputs (Except INVALID)
Compatibility with Cell Phone Logic Supply Voltages
OUTPUTS
+3.3V
INPUTS
±15kV Human Body Model
±15kV IEC 1000-4-2 Air-Gap Discharge
±8kV IEC 1000-4-2 Contact Discharge
0.1μF
0.1μF
C2
C1
PART
0.1μF
C5
Typical Operating Circuit
T1IN
C1+
C1-
C2-
T2IN
C2+
R2OUT
R1OUT
-40°C to +85°C
-40°C to +85°C
TEMP. RANGE
Ordering Information
0°C to +70°C
0°C to +70°C
V
MAX3380E/
CC
MAX3381E
GND
V
V
V
L
L
L
T1OUT
T2OUT
5kΩ
5kΩ
R1IN
R2IN
V+
V-
PIN-PACKAGE
20 TSSOP
20 TSSOP
20 TSSOP
20 TSSOP
Features
C3
0.1μF
C4
0.1μF
RS-232
INPUTS
RS-232
OUTPUTS
1

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MAX3380ECUP Summary of contents

Page 1

... Operates Over Entire Li+ Battery Range ♦ Low Logic Threshold Down to +1.65V for Compatibility with Cell Phone Logic Supply Voltages ♦ 1µA Low-Power AutoShutdown Plus Mode ♦ Compatible with Next-Generation GSM Data Rates ♦ 20-Pin TSSOP Package PART MAX3380ECUP MAX3380EEUP MAX3381ECUP MAX3381EEUP +3.3V pin that L C1 0.1μ ...

Page 2

... Short-Circuit Duration T_OUT to GND........................Continuous Continuous Power Dissipation (T 20-Pin TSSOP (derate 10.9mW/°C over +70°C) .........879mW Operating Temperature Ranges MAX3380ECUP/MAX3381ECUP........................0°C to +70°C MAX3380EEUP/MAX3381EEUP .....................-40°C to +85°C Junction Temperature ......................................................+150°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300° ...

Page 3

RS-232 Transceivers with ±15kV ESD-Protected I/O and Logic Pins ELECTRICAL CHARACTERISTICS (continued +2.35V to +5.5V +1.65V to +5.5V. When 0.33µ ...

Page 4

RS-232 Transceivers with ±15kV ESD-Protected I/O and Logic Pins TIMING CHARACTERISTICS (V = +2.35V to +5.5V +1.65V to +5.5V. When 0.33µ ...

Page 5

RS-232 Transceivers with ±15kV ESD-Protected I/O and Logic Pins ( +4.2V 0.22µ 1µ 0.1µF parallel with 47µ ...

Page 6

RS-232 Transceivers with ±15kV ESD-Protected I/O and Logic Pins PIN NAME 1 C1+ Positive Terminal of Voltage-Doubler Charge-Pump Capacitor 2 V+ +5.5V/+4.0V Generated by the Charge Pump 3 C1- Negative Terminal of Voltage-Doubler Charge-Pump Capacitor ...

Page 7

RS-232 Transceivers with ±15kV ESD-Protected I/O and Logic Pins Voltage Generation in the Switchover Region The MAX3380E/MAX3381E include a switchover circuit between RS-232-compliant and RS-232-compatible modes that has approximately 400mV of hysteresis around the switchover ...

Page 8

RS-232 Transceivers with ±15kV ESD-Protected I/O and Logic Pins Table 1. AutoShutdown Plus Truth Table OPERATION FORCEON STATUS Shutdown X (Forced Off) Normal Operation 1 (Forced On) Normal Operation (AutoShutdown 0 Plus) Shutdown (AutoShutdown 0 ...

Page 9

RS-232 Transceivers with ±15kV ESD-Protected I/O and Logic Pins EDGE T_IN FORCEOFF DETECT EDGE R_IN DETECT FORCEON Figure 2c. AutoShutdown Plus Logic TRANSMITTERS ENABLED, INVALID HIGH +2.7V INDETERMINATE +0.3V AutoShutdown, TRANSMITTERS DISABLED, 0 1μA SUPPLY ...

Page 10

RS-232 Transceivers with ±15kV ESD-Protected I/O and Logic Pins 1MΩ 1500Ω DISCHARGE CHARGE-CURRENT RESISTANCE LIMIT RESISTOR HIGH STORAGE VOLTAGE 100pF CAPACITOR DC SOURCE Figure 5a. Human Body ESD Test Model ...

Page 11

RS-232 Transceivers with ±15kV ESD-Protected I/O and Logic Pins to IEC 1000-4-2 are generally lower than that measured using the Human Body Model. Figure 6a shows the IEC 1000-4-2 model, and Figure 6b shows the ...

Page 12

RS-232 Transceivers with ±15kV ESD-Protected I/O and Logic Pins For Figure 9 and Figure 10, a single transmitter was dri- ven at 460kbps, and all transmitters were loaded with an RS-232 receiver in parallel with ...

Page 13

RS-232 Transceivers with ±15kV ESD-Protected I/O and Logic Pins V BATT CELL PHONE LOGIC LEVELS Tx RTS Rx CTS Figure 11. Typical Application Circuit Pin Configuration TOP VIEW C1 C1- ...

Page 14

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 14 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2001 Maxim Integrated Products Package Information (continued) PACKAGE OUTLINE, TSSOP 4 ...

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