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LT1537CG#TR

Description
IC txrx rs232 5V LP caps 28ssop
CategoryAnalog mixed-signal IC    Drivers and interfaces   
File Size217KB,8 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Download Datasheet Parametric Compare View All

LT1537CG#TR Overview

IC txrx rs232 5V LP caps 28ssop

LT1537CG#TR Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?incompatible
MakerLinear ( ADI )
Parts packaging codeSSOP
package instructionSSOP,
Contacts28
Manufacturer packaging codeG
Reach Compliance Code_compli
ECCN codeEAR99
Other featuresEXTERNAL CHARGE PUMP
Differential outputNO
Number of drives3
Input propertiesSCHMITT TRIGGER
Interface integrated circuit typeLINE TRANSCEIVER
Interface standardsEIA-232
JESD-30 codeR-PDSO-G28
JESD-609 codee0
length10.2 mm
Humidity sensitivity level1
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)235
Certification statusNot Qualified
Maximum receive delay600 ns
Number of receiver bits5
Maximum seat height2 mm
Nominal supply voltage5 V
surface mountYES
technologyBIPOLAR
Temperature levelCOMMERCIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formGULL WING
Terminal pitch0.65 mm
Terminal locationDUAL
Maximum time at peak reflow temperature20
maximum transmission delay1300 ns
width5.3 mm
LT1537
Advanced Low Power
5V RS232 Transceiver with
Small Capacitors
FEATURES
s
s
s
s
s
s
s
s
s
s
DESCRIPTIO
s
s
s
s
Low Cost
Uses Small Capacitors: 0.1µF, 0.2µF
1
µ
A Supply Current in Shutdown
120kBaud Operation for R
L
= 3k, C
L
= 2500pF
250kBaud Operation for R
L
= 3k, C
L
= 1000pF
CMOS Comparable Low Power: 40mW
Operates from a Single 5V Supply
Easy PC Layout: Flow-through Architecture
Rugged Bipolar Design
Outputs Assume a High Impedance State When Off
or Powered Down
Improved Protection: RS232 I/O Lines Can Be Forced
to
±25V
Without Damage
Output Overvoltage Does Not Force Current Back
into Supplies
Absolutely No Latch-Up
Available in SO Package
The LT
®
1537 is a three-driver, five-receiver RS232 trans-
ceiver, pin compatible with the LT1137A, offering perfor-
mance improvements and two shutdown modes. The
LT1537’s charge pump is designed for extended compli-
ance and can deliver over 35mA of load current. Supply
current is typically 8mA, competitive with similar CMOS
devices. An advanced driver output stage operates up to
250kbaud while driving heavy capacitive loads.
The LT1537 is fully compliant with all RS232 specifica-
tions. Special bipolar construction techniques protect the
drivers and receivers beyond the fault conditions stipu-
lated for RS232. Driver outputs and receiver inputs can be
shorted to
±25V
without damaging the device or the
power supply generator. In addition, the RS232 I/O pins
are resilient to multiple
±5kV
ESD strikes.
The transceiver has two shutdown modes. One mode
disables the drivers and the charge pump, the other shuts
down all circuitry. While shut down, the drivers and
receivers assume high impedance output states.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATI
s
s
S
Notebook Computers
Palmtop Computers
TYPICAL APPLICATI
+
0.1µF
2
×
0.1µF
V
+
5V V
CC
1
2
3
4
DRIVER OUT
RX IN
DRIVER OUT
TO
LINE
RX IN
RX IN
RX IN
DRIVER OUT
RX IN
ON/OFF = 5V
5
6
7
8
9
10
11
12
13
14
LT1537
28
27
25
24
23
22
21
20
19
18
17
16
15
26
V
0.1µF
RECEIVER
OUTPUT
C
L
= 50pF
R
DRIVER
OUTPUT
R
L
= 3k
C
L
= 2500pF
DRIVER IN
RX OUT
DRIVER IN
RX OUT
RX OUT
RX OUT
DRIVER IN
RX OUT
GND
DRIVER
DISABLE
LT1537 • TA01
+
+
2
×
0.1µF
TO LOGIC
INPUT
U
Output Waveforms
LT1537 • TA02
+
UO
UO
1

LT1537CG#TR Related Products

LT1537CG#TR LT1537CSW#TR LT1537CSW#PBF LT1537CG#PBF LT1537CG#TRPBF LT1537CSW#TRPBF
Description IC txrx rs232 5V LP caps 28ssop IC txrx rs232 5V LP caps 28soic IC TXRX 5V RS232 LOW-PWR 28-SOIC IC TXRX 5V RS232 LOW-PWR 28-SSOP IC TXRX 5V RS232 LOW-PWR 28-SSOP IC TXRX 5V RS232 LOW-PWR 28-SOIC
Brand Name Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology
Is it Rohs certified? incompatible incompatible conform to conform to conform to conform to
Parts packaging code SSOP SOIC SOIC SSOP SSOP SOIC
package instruction SSOP, SOP, SOP, SSOP, SSOP, SOP,
Contacts 28 28 28 28 28 28
Manufacturer packaging code G SW SW G G SW
Reach Compliance Code _compli _compli compliant compliant compliant compliant
ECCN code EAR99 EAR99 EAR99 EAR99 EAR99 EAR99
Other features EXTERNAL CHARGE PUMP EXTERNAL CHARGE PUMP EXTERNAL CHARGE PUMP EXTERNAL CHARGE PUMP EXTERNAL CHARGE PUMP EXTERNAL CHARGE PUMP
Differential output NO NO NO NO NO NO
Number of drives 3 3 3 3 3 3
Input properties SCHMITT TRIGGER SCHMITT TRIGGER SCHMITT TRIGGER SCHMITT TRIGGER SCHMITT TRIGGER SCHMITT TRIGGER
Interface integrated circuit type LINE TRANSCEIVER LINE TRANSCEIVER LINE TRANSCEIVER LINE TRANSCEIVER LINE TRANSCEIVER LINE TRANSCEIVER
Interface standards EIA-232 EIA-232 EIA-232 EIA-232 EIA-232 EIA-232
JESD-30 code R-PDSO-G28 R-PDSO-G28 R-PDSO-G28 R-PDSO-G28 R-PDSO-G28 R-PDSO-G28
JESD-609 code e0 e0 e3 e3 e3 e3
length 10.2 mm 17.9 mm 17.9 mm 10.2 mm 10.2 mm 17.9 mm
Humidity sensitivity level 1 1 1 1 1 1
Number of functions 1 1 1 1 1 1
Number of terminals 28 28 28 28 28 28
Maximum operating temperature 70 °C 70 °C 70 °C 70 °C 70 °C 70 °C
Output characteristics 3-STATE 3-STATE 3-STATE 3-STATE 3-STATE 3-STATE
Output polarity INVERTED INVERTED INVERTED INVERTED INVERTED INVERTED
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code SSOP SOP SOP SSOP SSOP SOP
Package shape RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE
Peak Reflow Temperature (Celsius) 235 235 260 260 250 260
Certification status Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified
Maximum receive delay 600 ns 600 ns 600 ns 600 ns 600 ns 600 ns
Number of receiver bits 5 5 5 5 5 5
Maximum seat height 2 mm 2.65 mm 2.65 mm 2 mm 2 mm 2.65 mm
Nominal supply voltage 5 V 5 V 5 V 5 V 5 V 5 V
surface mount YES YES YES YES YES YES
technology BIPOLAR BIPOLAR BIPOLAR BIPOLAR BIPOLAR BIPOLAR
Temperature level COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL
Terminal surface Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn)
Terminal form GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING
Terminal pitch 0.65 mm 1.27 mm 1.27 mm 0.65 mm 0.65 mm 1.27 mm
Terminal location DUAL DUAL DUAL DUAL DUAL DUAL
Maximum time at peak reflow temperature 20 20 30 30 NOT SPECIFIED 30
maximum transmission delay 1300 ns 1300 ns 1300 ns 1300 ns 1300 ns 1300 ns
width 5.3 mm 7.5 mm 7.5 mm 5.3 mm 5.3 mm 7.5 mm
Base Number Matches - 1 1 1 1 1
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