DESCRIPTIO Supply Current: 300µA Receivers Kept Alive Shutdown: 3

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DESCRIPTIO Supply Current: 300µA Receivers Kept Alive Shutdown: 3

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LTC1350 3.3V Power EIA/TIA-562 3-Driver/ 5-Receiver Transceiver
DESCRIPTIO
Supply Current: 300µA Receivers Kept Alive Shutdown: 35µA Protection: ±10kV Operates from Single 3.3V Supply Uses Small Capacitors: 0.1µF Operates 120kBaud Three-State Outputs High Impedance When Output Overvoltage Does Force Current Back into Supplies EIA/TIA-562 Lines Forced ±25V Without Damage Flowthrough Architecture
LTC1350 3-driver/5-receiver EIA/TIA-562 transceiver with very supply current. load condition, supply current only 300µA. charge pump only requires four 0.1µF capacitors. Shutdown mode, receivers kept alive supply current only 35µA. RS232 outputs assume high impedance state Shutdown with power off. LTC1350 fully compliant with data rate overvoltage EIA/TIA-562 specifications. transceiver operate 120kbaud with 1000pF load. Both driver outputs receiver inputs forced ±25V without damage survive multiple ±10kV strikes.
registered trademarks Linear Technology Corporation.
APPLICATIO
Notebook Computers Palmtop Computers
TYPICAL APPLICATIO
3-Drivers/5-Receivers with Shutdown
LTC1350
LTC1350 TA01
Quiescent Shutdown Supply Current Temperature
QUIESCENT CURRENT (µA)
TEST CONDITION: 3.3V DRIVER INPUTS TIED
ON/OFF
SHUTDOWN CURRENT
SHUTDOWN CURRENT (µA)
QUIESCENT CURRENT
TEMPERATURE (°C)
LTC1350 TA02
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LTC1350
ABSOLUTE
RATI
PACKAGE/ORDER ATIO
VIEW PACKAGE 28-LEAD PDIP
Supply Voltage (VCC) Input Voltage Driver 0.3V 0.3V Receiver ON/OFF 0.3V 0.3V Output Voltage Driver Receiver 0.3V 0.3V Short-Circuit Duration Driver Output Indefinite Receiver Output Indefinite Operating Temperature Range Commercial (LTC1350C) 70°C Industrial (LTC1350I) 40°C 85°C Storage Temperature Range 65°C 150°C Lead Temperature (Soldering, sec). 300°C
ORDER PART NUMBER LTC1350CG LTC1350CNW LTC1350CSW LTC1350IG LTC1350INW LTC1350ISW
ON/OFF PACKAGE 28-LEAD SSOP
PACKAGE 28-LEAD PLASTIC WIDE TJMAX 125°C, 96°C/W TJMAX 125°C, 56°C/W (NW) TJMAX 125°C, 85°C/W (SW)
Consult Marketing parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
PARAMETER Driver Output Voltage Swing Logic Input Voltage Level Logic Input Current Output Short-Circuit Current Output Leakage Current Receiver Input Voltage Thresholds Hysteresis Input Resistance Output Voltage Output Short-Circuit Current Output Leakage Current CONDITIONS
denotes specifications which apply over full operating temperature range. 3.3V, 0.1µF, unless noted.
Positive Negative
UNITS
Input Level (VOUT High) Input High Level (VOUT Low) VOUT Shutdown (Note VOUT ±20V Input Threshold Input High Threshold ±10V Output Low, IOUT 1.6mA (VCC 3.3V) Output High, IOUT 160µA (VCC 3.3V) Sinking Current, VOUT Shutdown (Note VOUT
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LTC1350
ELECTRICAL CHARACTERISTICS
PARAMETER Power Supply Generator Output Voltage Output Voltage Supply Rise Time Power Supply Supply Current CONDITIONS IOUT IOUT IOUT IOUT Shutdown Turn-On
denotes specifications which apply over full operating temperature range. 3.3V, 0.1µF, unless noted.
UNITS
Load (All Drivers VCC)(Note 70°C Load (All Drivers 0)(Note 70°C Load (All Drivers VCC)(Note 85°C Load (All Drivers VCC)(Note 40°C Load (All Drivers 0)(Note 40°C 85°C Shutdown (Note
ON/OFF Threshold ON/OFF Threshold High
CHARACTERISTICS
PARAMETER Slew Rate Driver Propagation Delay (TTL EIA/TIA-562) Receiver Propagation Delay (EIA/TIA-562 TTL)
denotes specifications which apply over full operating temperature range. 0.1µF, unless noted.
CONDITIONS 51pF 1000pF (Figure (Figure (Figure (Figure
UNITS V/µs V/µs
Note Absolute Maximum Ratings those values beyond which life device impaired. Note Supply current measured with driver receiver outputs unloaded.
Note Supply current measurement Shutdown mode performed with VON/OFF
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LTC1350 TYPICAL PERFOR CHARACTERISTICS
Driver Output Voltage Temperature
DRIVER OUTPUT VOLTAGE
3.3V OUTPUT HIGH
THRESHOLD VOLTAGE
SUPPLY CURRENT (mA)
DRIVERS WITH LOAD,
3.3V OUTPUT
TEMPERATURE (°C)
Supply Current Temperature
DRIVERS LOADED LEAKAGE CURRENT (µA) TEMPERATURE (°C)
SHORT-CIRCUIT CURRENT (mA)
SUPPLY CURRENT (mA)
DRIVER LOADED
Receiver Short-Circuit Current Temperature
ISC+ ISC-
SHORT-CIRCUIT CURRENT (mA)
TEMPERATURE (°C)
LTC1350 TPC01
LTC1350 TPC04
Receiver Input Thresholds Temperature
TEMPERATURE (°C)
Supply Current Data Rate
3.3V 2500pF DRIVERS ACTIVE
VTH+ VTH-
DATA RATE Baud)
LT1350 TPC02
LTC1350 TPC03
Driver Leakage Shutdown Temperature
Driver Short-Circuit Current Temperature
ISC-
VOUT -20V
ISC+
VOUT
TEMPERATURE (°C)
TEMPERATURE (°C)
LTC1350 TPC05
LTC1350 TPC06
Driver Output Waveforms
DRIVER OUTPUT 1000pF DRIVER OUTPUT
Receiver Output Waveform
RECEIVER OUTPUT 50pF
INPUT INPUT
LTC1350 TPC08 LTC1350 TPC09
LTC1350 TPC07
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LTC1350
CTIO
VCC: 3.3V Input Supply Pin. Supply current typically 35µA Shutdown mode. This should decoupled with 0.1µF ceramic capacitor. GND: Ground Pin. ON/OFF: TTL/CMOS Compatible Shutdown Pin. logic puts device Shutdown mode with receivers kept alive supply current equal 35µA. driver other receiver outputs high impedance state. This cannot float. Positive Supply Output. 2VCC This requires external capacitor 0.1µF) charge storage. capacitor tied ground VCC. With multiple devices, pins paralleled into common capacitors. large number devices, increasing size shared common storage capacitors recommended reduce ripple. Negative Supply Output. (2VCC 1.3V). This requires external capacitor 0.1µF) charge storage. C1+, C1-, C2+, C2-: Commutating Capacitor Inputs. These pins require external capacitors 0.1µF): from another from maintain charge pump efficiency, capacitor's effective series resistance should less than EIA/TIA-562 Driver Input Pins. Inputs TTL/ CMOS compatible. Inputs should allowed float. unused inputs VCC. OUT: Driver Outputs EIA/TIA-562 Voltage Levels. Outputs high impedance state when Shutdown mode driver outputs protected against ±10kV human body model discharges. Receiver Inputs. These pins forced ±25V without damage. receiver inputs protected against ±10kV human body model discharges. Each receiver provides 0.4V hysteresis noise immunity. OUT: Receiver Outputs with TTL/CMOS Voltage Levels. Receiver outputs high impedance state when Shutdown mode allow data line sharing. Receivers kept alive Shutdown.
SWITCHI WAVEFOR
INPUT OUTPUT 1.4V 1.4V
LTC1350
Figure Driver Propagation Delay Timing
INPUT OUTPUT
1.7V
Figure Receiver Propagation Delay Timing
1.3V 2.4V 0.8V
LTC1350
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LTC1350
TEST CIRCUITS
Driver Timing Test Load
DRIVER OUTPUT DRIVER 51pF
Receiver Timing Test Load
OUTPUT INPUT 51pF
DRIVER INPUT
LTC1350 TA04
LTC1350 TA03
Test Circuit
0.1µF 0.1µF RS232 LINE PINS PROTECTED ±10kV ON/OFF LTC1350
LTC1350 TC01
0.1µF 0.1µF
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LTC1350
PACKAGE DESCRIPTIO
0.42 ±0.03 RECOMMENDED SOLDER LAYOUT 5.00 5.60** (.197 .221)
0.09 0.25 (.0035 .010)
0.55 0.95 (.022 .037)
NOTE: CONTROLLING DIMENSION: MILLIMETERS MILLIMETERS DIMENSIONS (INCHES) DRAWING SCALE *DIMENSIONS INCLUDE MOLD FLASH. MOLD FLASH SHALL EXCEED .152mm (.006") SIDE **DIMENSIONS INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL EXCEED .254mm (.010") SIDE
.600 .625 (15.240 15.875)
.008 .015 (0.203 0.381) +.035 .625 -.015
INCHES MILLIMETERS *THESE DIMENSIONS INCLUDE MOLD FLASH PROTRUSIONS. MOLD FLASH PROTRUSIONS SHALL EXCEED .010 INCH (0.254mm)
NOTE: DIMENSIONS
+0.889 15.87 -0.381
Information furnished Linear Technology Corporation believed accurate reliable. However, responsibility assumed use. Linear Technology Corporation makes representation that interconnection circuits described herein will infringe existing patent rights.
Package 28-Lead Plastic SSOP (5.3mm)
(Reference 05-08-1640)
9.90 10.50* (.390 .413) 1.25 ±0.12 7.40 8.20 (.291 .323) 0.65 (.079)
0.65 (.0256)
0.22 0.38 (.009 .015)
0.05 (.002)
SSOP 0802
Package 28-Lead PDIP (Wide .600 Inch)
(Reference 05-08-1520)
1.467* (36.957)
.505 .560* (12.827 14.224)
.150 .005 (3.810 0.127) .015 (0.381)
.045 .065 (1.143 1.651)
.070 (1.778) .120 (3.175) .035 .080 (0.889 2.032) .100 (2.54) .018 .003 (0.457 0.076)
NW28 1002
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LTC1350
PACKAGE DESCRIPTIO
.030 ±.005
.050 .045 ±.005 .697 .712 (17.70 18.08) NOTE
.420
RECOMMENDED SOLDER LAYOUT .291 .299 (7.391 7.595) NOTE .010 .029 (0.254 0.737)
.005 (0.127)
.009 .013 (0.229 0.330)
NOTE .016 .050 (0.406 1.270)
NOTE: DIMENSIONS
INCHES (MILLIMETERS) DRAWING SCALE IDENT, NOTCH CAVITIES BOTTOM PACKAGES MANUFACTURING OPTIONS. PART SUPPLIED WITH WITHOUT OPTIONS THESE DIMENSIONS INCLUDE MOLD FLASH PROTRUSIONS. MOLD FLASH PROTRUSIONS SHALL EXCEED .006" (0.15mm)
RELATED PARTS
PART NUMBER 1137A LTC1327 LTC1337 LTC1348 LTC1385 LTC1386 LTC2844 LTC2845 LTC2846
DESCRIPTION Driver, Receiver RS232 Transceiver 3.3V, Driver, Receiver RS562 Transceiver Driver, Receiver RS232 Transceiver 3.3V Driver, Receiver RS232 Transceiver 3.3V, Driver, Receiver RS562 Transceiver 3.3V, Driver, Receiver RS562 Transceiver 3.3V, Software-Selectable Multiprotocol Transceiver 3.3V, Software-Selectable Multiprotocol Transceiver 3.3V, Software-Selectable Multiprotocol Transceiver
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, 95035-7487
(408) 432-1900 FAX: (408) 434-0507
WWW.linear.com
Package 28-Lead Plastic Small Outline (Wide .300 Inch)
(Reference 05-08-1620)
.325 ±.005 NOTE .394 .419 (10.007 10.643) .093 .104 (2.362 2.642) .037 .045 (0.940 1.143) .050 (1.270) .014 .019 (0.356 0.482) .004 .012 (0.102 0.305)
(WIDE) 0502
COMMENTS ±15kV 1000-4 300µA Supply Current, 0.2µA Shutdown 300µA Supply Current, Shutdown True RS232 3.3V, Receivers Active Shutdown 200µA Supply Current, Receivers Active Shutdown 200µA Supply Current, Narrow 16-Pin Drivers, Receivers Control Signals Including Drivers, Receivers Control Signals Including Drivers, Receivers with Termination Data/Clock
1350fa LW/TP 0103 PRINTED
LINEAR TECHNOLOGY CORPORATION 1993

DESCRIPTIO Supply Current: 300µA Receivers Kept Alive Shutdown: 3

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