DESCRIPTIO Operates from Single Supply Supply Current: 220µA 0.2µ
|
|
|
Top Searches for this datasheet
LTC1382 Power RS232 Transceiver with Shutdown
DESCRIPTIO
Operates from Single Supply Supply Current: 220µA 0.2µA Shutdown Mode Protection Over ±10kV Uses Small Capacitors: 0.1µF Operates 120kBaud Output Overvoltage Does Force Current Back into Supplies RS232 Lines Forced ±25V Without Damage Compatible with LT1180A
LTC1382 ultra-low power 2-driver/2-receiver RS232 transceiver that operates from single supply. charge pump requires only four spacesaving 0.1µF capacitors. transceiver operates modes, Normal Shutdown. Normal mode, only 220µA with driver outputs unloaded. Shutdown mode, charge pump turned off, driver outputs forced into three-state, both receivers drops 0.2µA. LTC1382 fully compliant with data rate overvoltage RS232 specifications. transceiver operate 120kbaud with 2500pF, load. Both driver outputs receiver inputs forced ±25V without damage survive multiple ±10kV strikes.
APPLICATI
Notebook Computers Palmtop Computers
TYPICAL APPLICATI
2-Drivers/2-Receivers with Shutdown
0.1µF 0.1µF 300k LOGIC INPUT LOGIC OUTPUT OUTPUT INPUT LTC1382 300k 0.1µF 0.1µF
QUIESCENT CURRENT (µA)
Quiescent Shutdown Supply Current Temperature
TEST CONDITION: SHUTDOWN CURRENT QUIESCENT CURRENT
SHUTDOWN CURRENT (µA)
LOGIC INPUT
OUTPUT
LOGIC OUTPUT ON/OFF
INPUT
LTC1382 TA01
TEMPERATURE (°C)
LTC1382 TA02
LTC1382 ABSOLUTE RATI
PACKAGE/ORDER ATIO
VIEW ON/OFF
Supply Voltage (VCC) Input Voltage Driver 0.3V 0.3V Receiver Digital Input 0.3V 0.3V Output Voltage Driver Receiver 0.3V 0.3V Short-Circuit Duration Driver Output Indefinite Receiver Output Indefinite Operating Temperature Range 70°C Storage Temperature Range 65°C 150°C Lead Temperature (Soldering, sec). 300°C
ORDER PART NUMBER LTC1382CN LTC1382CS
PACKAGE PACKAGE 18-LEAD PLASTIC 18-LEAD PLASTIC
TJMAX 125°C, 56°C/W TJMAX 125°C, 85°C/W
Consult factory Industrial Military grade parts.
ELECTRICAL CHARACTERISTICS
0.1µF, VON/OFF unless otherwise noted.
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 Positive Negative
UNITS
Input Level (VOUT High) Input High Level (VOUT Low) VOUT Shutdown (Note VOUT ±20V Input Threshold Input High Threshold Output Low, IOUT 1.6mA (VCC Output High, IOUT 160µA (VCC Sinking Current, VOUT Sourcing Current VOUT Shutdown (Note VOUT
±500
LTC1382
ELECTRICAL CHARACTERISTICS
0.1µF, VON/OFF VCC, unless otherwise noted.
PARAMETER Power Supply Generator Output Voltage Output Voltage Supply Rise Time Power Supply Supply Current Supply Leakage Current (VCC) Digital Input Threshold Digital Input Threshold High CONDITIONS IOUT IOUT IOUT IOUT Shutdown Turn-On Load (Note Shutdown (Note
0.22
UNITS
CHARACTERISTICS
0.1µF, unless otherwise noted.
PARAMETER Slew Rate Driver Propagation Delay (TTL RS232) Receiver Propagation Delay (RS232 TTL) CONDITIONS 51pF 2500pF (Figure (Figure (Figure (Figure
UNITS V/µs V/µs
denotes specifications which apply over operating temperature range 70°C. Note Absolute maximum ratings those values beyond which life device impaired.
Note Supply current measured with driver receiver outputs unloaded. Note Measurements made Shutdown mode performed with VON/OFF
TYPICAL PERFORMANCE CHARACTERISTICS
Driver Output Voltage Temperature
OUTPUT HIGH THRESHOLD VOLTAGE 4.5V
DRIVER OUTPUT VOLTAGE
TEMPERATURE (°C) OUTPUT 4.5V
SUPPLY CURRENT (mA)
LTC1382 TPC01
Receiver Input Thresholds Temperature
Supply Current Data Rate
2500pF DRIVERS ACTIVE
TEMPERATURE (°C)
DATA RATE (kBAUD)
LTC1382 TPC02
LTC1382 TPC03
LTC1382 TYPICAL PERFORMANCE CHARACTERISTICS
Supply Current Temperature
SHORT-CIRCUIT CURRENT (mA)
SUPPLY CURRENT (mA)
TEMPERATURE (°C) DRIVER LOADED DRIVERS LOADED
ISC- ISC+
SHORT-CIRCUIT CURRENT (mA)
LTC1382 TPC04
Driver Leakage Shutdown Temperature
LEAKAGE CURRENT (µA)
TEMPERATURE (°C) VOUT VOUT -20V
LTC1349 TPC05
Driver Short-Circuit Current Temperature
Receiver Short-Circuit Current Temperature
ISC-
ISC+
TEMPERATURE (°C)
TEMPERATURE (°C)
LTC1382 TPC05
LTC1382 TPC06
Driver Output Waveforms
DRIVER OUTPUT 2500pF DRIVER OUTPUT INPUT
Receiver Output Waveforms
RECEIVER OUTPUT 51pF
INPUT
LTC1382 TPC08
LTC1382 TPC09
LTC1382
CTIO
VCC: Input Supply Pin. This should decoupled with 0.1µF ceramic capacitor. GND: Ground Pin. ON/OFF: TTL/CMOS Compatible Shutdown Pin. logic puts device Shutdown mode. Both driver outputs forced into three-state supply current 0.2µA. Positive Supply Output (RS232 Drivers). 2VCC This requires external capacitor 0.1µF charge storage. capacitor tied ground VCC. With multiple devices, pins share common capacitor. large numbers devices, increasing size shared common storage capacitors recommended reduce ripple. Negative Supply Output (RS232 Drivers). (2VCC 2V). 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 RS232 Driver Input Pins. Inputs TTL/CMOS compatible. inputs unused drivers left unconnected since 300k input pull-up resistors included chip. minimize power consumption, internal driver pull-up resistors disconnected from Shutdown mode. OUT: Driver Outputs RS232 Voltage Levels. Outputs high impedance state when Shutdown 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. Outputs high impedance state when Shutdown mode.
SWITCHI WAVEFOR
DRIVER INPUT DRIVER OUTPUT 1.4V 1.4V
LTC1382
Figure Driver Propagation Delay Timing
INPUT OUTPUT
1.7V
1.3V 2.4V
LTC1382
0.8V
Figure Receiver Propagation Delay Timing
LTC1382 TEST CIRCUITS
Driver Timing Test Load Receiver Timing Test Load
DRIVER INPUT
DRIVER OUTPUT DRIVER 51pF
OUTPUT INPUT 51pF
LTC1382 TA04
LTC1382 TA03
Test Circuit
0.1µF 0.1µF 300k LOGIC INPUT LOGIC OUTPUT OUTPUT INPUT RS232 LINE PINS PROTECTED ±10kV LTC1382 300k 0.1µF 0.1µF
LOGIC INPUT
OUTPUT
LOGIC OUTPUT ON/OFF
INPUT
LTC1382 TA04
LTC1382
PACKAGE DESCRIPTION
Dimensions inches (millimeters) unless otherwise noted. Package 18-Lead Plastic
0.905 (22.860)
0.260 0.010 (6.604 0.254)
0.300 0.325 (7.620 8.255) 0.130 0.005 (3.302 0.127)
0.045 0.065 (1.143 1.651)
0.009 0.015 (0.229 0.381)
0.015 (0.381)
0.065 (1.651)
+0.025 0.325 -0.015 8.255 +0.635 -0.381
0.125 (3.175)
0.045 0.015 (1.143 0.381) 0.100 0.010 (2.540 0.254)
0.018 0.003 (0.457 0.076)
0392
Package 18-Lead Plastic
0.447 0.463 (11.354 11.760) (NOTE
NOTE
0.394 0.419 (10.007 10.643)
0.005 (0.127)
0.291 0.299 (7.391 7.595) (NOTE 0.010 0.029 (0.254 0.737)
0.093 0.104 (2.362 2.642)
0.037 0.045 (0.940 1.143)
0.050 (1.270)
0.009 0.013 (0.229 0.330)
NOTE 0.016 0.050 (0.406 1.270)
0.004 0.012 (0.102 0.305)
NOTE: IDENT, NOTCH CAVITIES BOTTOM PACKAGES MANUFACTURING OPTIONS. PART SUPPLIED WITH WITHOUT OPTIONS. THESE DIMENSIONS INCLUDE MOLD FLASH PROTRUSIONS. MOLD FLASH PROTRUSIONS SHALL EXCEED 0.006 INCH (0.15mm).
0.014 0.019 (0.356 0.482)
SOL18 0392
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.
LTC1382
U.S. Area Sales Offices
NORTHEAST REGION Linear Technology Corporation Oxford Valley 2300 Lincoln Hwy.,Suite Langhorne, 19047 Phone: (215) 757-8578 FAX: (215) 757-5631 Linear Technology Corporation Lowell St., Suite Wilmington, 01887 Phone: (508) 658-3881 FAX: (508) 658-2701 SOUTHEAST REGION Linear Technology Corporation 17060 Dallas Parkway Suite Dallas, 75248 Phone: (214) 733-3071 FAX: (214) 380-5138 CENTRAL REGION Linear Technology Corporation Chesapeake Square Mitchell Court, Suite A-25 Addison, 60101 Phone: (708) 620-6910 FAX: (708) 620-6977 SOUTHWEST REGION Linear Technology Corporation 22141 Ventura Blvd. Suite Woodland Hills, 91364 Phone: (818) 703-0835 FAX: (818) 703-0517 NORTHWEST REGION Linear Technology Corporation Sycamore Milpitas, 95035 Phone: (408) 428-2050 FAX: (408) 432-6331
International Sales Offices
FRANCE Linear Technology S.A.R.L. Immeuble Quartz" Chemin Justice 92290 Chatenay Malabry France Phone: 33-1-41079555 FAX: 33-1-46314613 GERMANY Linear Techonolgy GmbH Untere Hauptstr. D-85386 Eching Germany Phone: 49-89-3197410 FAX: 49-89-3194821 JAPAN Linear Technology Bldg. 4-4-12 Iidabashi, Chiyoda-Ku Tokyo, Japan Phone: 81-3-3237-7891 FAX: 81-3-3237-8010 KOREA Linear Technology Korea Branch Namsong Building, #505 Itaewon-Dong 260-199 Yongsan-Ku, Seoul Korea Phone: 82-2-792-1617 FAX: 82-2-792-1619 SINGAPORE Linear Technology Pte. Ltd. Boon Keng Road #02-15 Kallang Ind. Estates Singapore 1233 Phone: 65-293-5322 FAX: 65-292-0398 TAIWAN Linear Technology Corporation 801, Sec. Chung Shan Taipei, Taiwan, R.O.C. Phone: 886-2-521-7575 FAX: 886-2-562-2285 UNITED KINGDOM Linear Technology (UK) Ltd. Coliseum, Riverside Camberley, Surrey GU15 United Kingdom Phone: 44-276-677676 FAX: 44-276-64851
World Headquarters
Linear Technology Corporation 1630 McCarthy Blvd. Milpitas, 95035-7487 Phone: (408) 432-1900 FAX: (408) 434-0507
0294
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, 95035-7487
(408) 432-1900 FAX: (408) 434-0507 TELEX: 499-3977
LT/GP 0594 PRINTED
LINEAR TECHNOLOGY CORPORATION 1994
Other recent searches
SN74AHCT32Q - SN74AHCT32Q SN74AHCT32Q Datasheet
S3590-08 - S3590-08 S3590-08 Datasheet
QL6500 - QL6500 QL6500 Datasheet
PIC16C5X - PIC16C5X PIC16C5X Datasheet
PIC12C - PIC12C PIC12C Datasheet
LST1206-KGCT - LST1206-KGCT LST1206-KGCT Datasheet
ICS726 - ICS726 ICS726 Datasheet
HI3306 - HI3306 HI3306 Datasheet
F817JPL - F817JPL F817JPL Datasheet
CY7C1354V25 - CY7C1354V25 CY7C1354V25 Datasheet
CY7C1356V25 - CY7C1356V25 CY7C1356V25 Datasheet
Privacy Policy | Disclaimer
© 2012 Datasheet Archive
