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LT1332CG#PBF

Description
IC TXRX RS232 W/12V VPP 28-SSOP
CategoryAnalog mixed-signal IC    Drivers and interfaces   
File Size223KB,8 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance
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LT1332CG#PBF Overview

IC TXRX RS232 W/12V VPP 28-SSOP

LT1332CG#PBF Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
MakerLinear ( ADI )
Parts packaging codeSSOP
package instructionSSOP,
Contacts28
Reach Compliance Codecompliant
ECCN codeEAR99
Is SamacsysN
Other features1 RECEIVER ACTIVE UNDER SHUTDOWN
Differential outputNO
Number of drives3
Input propertiesSCHMITT TRIGGER
Interface integrated circuit typeLINE TRANSCEIVER
Interface standardsEIA-232
JESD-30 codeR-PDSO-G28
JESD-609 codee3
length10.2 mm
Humidity sensitivity level1
Nominal negative supply voltage-12 V
Number of functions1
Number of terminals28
Maximum operating temperature70 °C
Minimum operating temperature
Output characteristics3-STATE
Output polarityINVERTED
Package body materialPLASTIC/EPOXY
encapsulated codeSSOP
Package shapeRECTANGULAR
Package formSMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Celsius)250
Certification statusNot Qualified
Maximum receive delay3000 ns
Number of receiver bits5
Maximum seat height2 mm
Maximum supply voltage6 V
Minimum supply voltage2 V
Nominal supply voltage5 V
Supply voltage 1-max13.2 V
Mains voltage 1-minute6.5 V
Supply voltage1-Nom12 V
surface mountYES
technologyBIPOLAR
Temperature levelCOMMERCIAL
Terminal surfaceTin (Sn)
Terminal formGULL WING
Terminal pitch0.65 mm
Terminal locationDUAL
Maximum time at peak reflow temperature40
maximum transmission delay1300 ns
width5.3 mm
Base Number Matches1
LT1332
Wide Supply Range
Low Power RS232 Transceiver with
12V VPP Output for Flash Memory
FEATURES
s
s
s
s
s
s
s
s
DESCRIPTIO
s
s
s
s
s
Generates Full RS232 Signal Levels from 3V Supply
12V VPP Output Available for Flash Memory
Useful with a Wide Variety of Switching Regulators
Low Supply Current: I(V
CC
) = 1mA
Wide Supply Range: 2V
V
CC
6V
ESD Protection Over
±10kV
Operates to 120k Baud
Outputs Assume a High Impedance State When Off
or Powered Down
One
µPower
Receiver Remains Active While in
SHUTDOWN
Flowthrough Architecture Eases PC Board Layout
40µA Supply Current in SHUTDOWN
Absolutely No Latch-Up
Available in SO and SSOP Packages
The LT1332 is a 3-driver/5-receiver RS232 transceiver,
designed to be used in conjunction with a switching
regulator. The LT1332 shares the regulator’s positive
output, while charge is capacitively pumped from the
regulator’s switch pin to the negative supply. Schottky
rectifiers built into the LT1332 simplify the charge
pump design.
The LT1332/LT1109A combination shown below gener-
ates fully compliant RS232 signal levels from as little as 2V
of input supply. The switcher can deliver greater than
100mA of output current, making the LT1332 an excellent
choice for mouse driver circuits.
Advanced driver output stages operate up to 120k baud
while driving heavy capacitive loads. New ESD structures
on chip make the LT1332 resilient to multiple
±10kV
strikes, eliminating costly transient suppressors.
A shutdown pin disables the transceiver except for one
receiver which remains active for detecting incoming
RS232 signals. When shut down, the disabled drivers and
receivers assume high impedance output states.
APPLICATI
s
s
S
Notebook and Palmtop Computers
Mouse Driver Circuits
TYPICAL APPLICATI
STANDARD FLASH MEMORY VPP GENERATOR
SWITCHER
V
IN
2 AA
BATTERIES
UP TO 6V
L1**
33µH
22µF*
V
IN
SW
LT1109A-12
SW
SENSE
ON/OFF
GND
PGND
LT1332 Powered from an LT1109A Micropower Switching Regulator
Configured for Flash Memory
12V VPP
OUTPUT
+
1µF
V
+
1
24
23
22
21
20
19
18
17
16
15
14
LT1332
13
RS232
ON/OFF
LOGIC
SIDE
V
10µF
C
2
3
4
5
RS232
SIDE
6
7
8
MBRS130T3
DRIVER
INPUT
DRIVER
OUTPUT
R
L
= 3k
C
L
= 2500pF
ON/OFF
* AVX TAJE226K035
** SUMIDA CD54-330N (708-956-0666)
9
10
NC
11
12
0.1µF
LT1332 • TA01
3V
RS232
V
CC
+
22µF*
RECEIVER
OUTPUT
C
L
= 50pF
LT1332 • TA02
U
Output Waveforms
UO
UO
1

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Description IC TXRX RS232 W/12V VPP 28-SSOP IC TXRX RS232 W/12V VPP 28-SSOP RESISTOR, THIN FILM, 0.35 W, 0.5 %, 25 ppm, 218000 ohm, SURFACE MOUNT, 1505, CHIP RESISTOR, THIN FILM, 0.35 W, 0.5 %, 25 ppm, 218000 ohm, SURFACE MOUNT, 1505, CHIP, GREEN IC TXRX RS232 W/12V VPP 28-DIP
Is it Rohs certified? conform to conform to incompatible conform to -
package instruction SSOP, 0.209 INCH, PLASTIC, SSOP-28 SMT, 1505 SMT, 1505 -
Reach Compliance Code compliant compliant compliant compliant -
ECCN code EAR99 EAR99 EAR99 EAR99 -
Other features 1 RECEIVER ACTIVE UNDER SHUTDOWN 1 RECEIVER ACTIVE UNDER SHUTDOWN HIGH PRECISION, STANDARD: MIL-PRF-55342G HIGH PRECISION, STANDARD: MIL-PRF-55342G -
JESD-609 code e3 e3 e0 e4 -
Number of terminals 28 28 2 2 -
Maximum operating temperature 70 °C 70 °C 155 °C 155 °C -
Package shape RECTANGULAR RECTANGULAR RECTANGULAR PACKAGE RECTANGULAR PACKAGE -
Package form SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH SMT SMT -
surface mount YES YES YES YES -
technology BIPOLAR BIPOLAR THIN FILM THIN FILM -
Terminal surface Tin (Sn) MATTE TIN Tin/Lead (Sn/Pb) - with Nickel (Ni) barrier Gold (Au) - with Nickel (Ni) barrier -
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