LTC1384IG Linear Technology, LTC1384IG Datasheet

IC TXRX 5V RS232 LOW PWR 20-SSOP

LTC1384IG

Manufacturer Part Number
LTC1384IG
Description
IC TXRX 5V RS232 LOW PWR 20-SSOP
Manufacturer
Linear Technology
Type
Transceiverr
Datasheet

Specifications of LTC1384IG

Number Of Drivers/receivers
2/2
Protocol
RS232
Voltage - Supply
4.5 V ~ 5 V
Mounting Type
Surface Mount
Package / Case
20-SSOP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
FEATURES
APPLICATIO S
TYPICAL APPLICATIO
Operates from a Single 5V Supply
Low Supply Current: I
I
Receivers Kept Alive
ESD Protection Over ±10kV
Uses Small Capacitors: 0.1µF
Operates to 120kBaud
Output Overvoltage Does Not Force Current
Back into Supplies
RS232 I/O Lines Can Be Forced to ±25V
Without Damage
Pin Compatible with LT1180A
Notebook Computers
Palmtop Computers
CC
= 35µA in Shutdown Mode with Both
LOGIC OUTPUT
LOGIC OUTPUT
LOGIC INPUT
LOGIC INPUT
0.1µF
0.1µF
ON/OFF
2-Drivers/2-Receivers with Shutdown
12
11
13
10
18
2
4
5
6
and Receiver Enable
U
V
V
CC
CC
300k
300k
CC
LTC1384
RX EN
= 220µA
1
5k
5k
U
LTC1384 • TA01
17
3
7
15
8
14
9
16
V
232 OUTPUT
232 OUTPUT
232 INPUT
232 INPUT
CC
0.1µF
= 5V
0.1µF
DESCRIPTIO
Transceiver with 2 Receivers
The LTC
RS232 transceiver that operates from a single 5V
supply. The charge pump requires only four space-
saving 0.1µF capacitors.
The transceiver operates in one of two modes, Normal and
Shutdown. In the Normal mode, I
driver outputs unloaded. In the Shutdown mode, the
charge pump is turned off, the driver outputs are forced
into three-state, both receivers are kept active and I
drops to 35µA. The receiver outputs may be forced into
three-state at any time using the receiver enable (RX EN)
pin.
The LTC1384 is fully compliant with all data rate and
overvoltage RS232 specifications. The transceiver can
operate up to 120kbaud with a 2500pF, 3kΩ load. Both
driver outputs and receiver inputs can be forced to
±25V without damage and can survive multiple ±10kV
ESD strikes.
, LTC and LT are registered trademarks of Linear Technology Corporation.
®
1384 is an ultra-low power 2-driver/2-receiver
1200
1000
200
Quiescent and Shutdown Supply Current
800
600
400
0
–20
TEST CONDITION: V
5V Low Power RS232
Active in Shutdown
0
U
vs Temperature
TEMPERATURE (°C)
20
SHUTDOWN
QUIESCENT
CC
CURRENT
CURRENT
= 5V
40
CC
is only 220µA with the
60
LTC1384 • TA02
80
LTC1384
60
50
40
30
20
10
0
1384fa
1
CC

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LTC1384IG Summary of contents

Page 1

... The LTC1384 is fully compliant with all data rate and overvoltage RS232 specifications. The transceiver can operate up to 120kbaud with a 2500pF, 3kΩ load. Both driver outputs and receiver inputs can be forced to ±25V without damage and can survive multiple ±10kV ESD strikes. , LTC and LT are registered trademarks of Linear Technology Corporation 0.1µ ...

Page 2

... LTC1384I ............................................ – 40°C to 85°C CC Storage Temperature Range ................. – 65°C to 150°C Lead Temperature (Soldering, 10 sec)................. 300° ORDER PART NUMBER LTC1384CG + V LTC1384IG C1– C2– V– TR2 OUT RX2 IN N PACKAGE 18-LEAD PDIP T = 125°C, θ JMAX The denotes specifications which apply over the full operating = 0V, unless otherwise noted ...

Page 3

DC ELECTRICAL CHARACTERISTICS temperature range 5V 0.1µ PARAMETER Output Short-Circuit Current Output Leakage Current Power Supply Generator + V Output Voltage – V Output Voltage Supply Rise Time ...

Page 4

LTC1384 W U TYPICAL PERFOR A CE CHARACTERISTICS V Supply Current CC vs Temperature DRIVERS LOADED DRIVER LOADED ...

Page 5

CTIO Input Supply Pin. This pin should be decoupled CC with a 0.1µF ceramic capacitor. GND: Ground Pin. ON/OFF: TTL/CMOS Compatible Shutdown Pin. A logic low puts the device in the ...

Page 6

LTC1384 TEST CIRCUITS Driver Timing Test Load DRIVER OUTPUT DRIVER DRIVER INPUT 6 51pF 3k LTC1384 • TA03 ESD Test Circuit 2 17 0.1µ LTC1384 5 7 0.1µ 300k 12 15 LOGIC INPUT V CC ...

Page 7

... MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .010 INCH (0.254mm) Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...

Page 8

... NOTE .394 – .419 (10.007 – 10.643) N .037 – .045 (0.940 – 1.143) .004 – .012 (0.102 – 0.305) S18 (WIDE) 0502 LW/TP 1002 1K REV A • PRINTED IN USA  LINEAR TECHNOLOGY CORPORATION 1994 1384fa ...

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