LTC1321CSW#PBF datasheet, PDF - EEWORLD Datasheet

Datasheet> All Categories > Analog mixed-signal IC> Drivers and interfaces> LTC1321CSW#PBF

LTC1321CSW#PBF: DescriptionIC TXRX RS232/485/EIA562 24-SOIC; CategoryAnalog mixed-signal IC Drivers and interfaces; File Size352KB，20 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html; Environmental Compliance

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LTC1321CSW#PBF Overview

IC TXRX RS232/485/EIA562 24-SOIC

LTC1321CSW#PBF Parametric

Parameter Name	Attribute value
Brand Name	Linear Technology
Is it Rohs certified?	conform to
Maker	Linear ( ADI )
Parts packaging code	SOIC
package instruction	SOP, SOP24,.4
Contacts	24
Manufacturer packaging code	SW
Reach Compliance Code	compliant
ECCN code	EAR99
Is Samacsys	N
Differential output	YES
Number of drives	2
Input properties	SCHMITT TRIGGER
Interface integrated circuit type	LINE TRANSCEIVER
Interface standards	EIA-485; EIA-562; TIA-562
JESD-30 code	R-PDSO-G24
JESD-609 code	e3
length	15.395 mm
Humidity sensitivity level	1
Nominal negative supply voltage	-5 V
Number of functions	2
Number of terminals	24
Maximum operating temperature	70 °C
Minimum operating temperature
Minimum output swing	7.4 V
Maximum output low current	0.003 A
Output polarity	TRUE
Package body material	PLASTIC/EPOXY
encapsulated code	SOP
Encapsulate equivalent code	SOP24,.4
Package shape	RECTANGULAR
Package form	SMALL OUTLINE
Peak Reflow Temperature (Celsius)	NOT SPECIFIED
power supply	+-5 V
Certification status	Not Qualified
Maximum receive delay	6000 ns
Number of receiver bits	2
Maximum seat height	2.642 mm
Maximum slew rate	2 mA
Maximum supply voltage	5.25 V
Minimum supply voltage	4.75 V
Nominal supply voltage	5 V
surface mount	YES
technology	CMOS
Temperature level	COMMERCIAL
Terminal surface	Matte Tin (Sn)
Terminal form	GULL WING
Terminal pitch	1.27 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	NOT SPECIFIED
maximum transmission delay	4000 ns
width	10.325 mm
Base Number Matches	1

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LTC1321/LTC1322/LTC1335

RS232/EIA562/RS485

Transceivers

FEATURES

DESCRIPTIO

LTC1321: 2-EIA562/RS232 Transceivers/2-RS485

Transceivers

LTC1322: 4-EIA562/RS232 Transceivers/2-RS485

Transceivers

LTC1335: 4-EIA562 Transceivers/2-RS485

Transceivers with OE

LTC1321/LTC1322 Have the Same Pinout as

SP301/SP302

LTC1335 Features Receiver Three-State Outputs

Low Supply Current:

1mA Typical

15µA Supply Current in Shutdown

120kBaud in EIA/TIA-562 or RS232 Mode

10MBaud in RS485/RS422 Mode

Self-Testing Capability in Loopback Mode

Power-Up/Down Glitch-Free Outputs

Driver Maintains High Impedance in Three-State,

Shutdown or With Power Off

Thermal Shutdown Protection

I/O Lines Can Withstand

±25V

Withstands Repeated 10kV ESD Pulses

The LTC1321/LTC1322/LTC1335 are low power CMOS

bidirectional transceivers, each featuring two reconfigurable

interface ports. Each can be configured as two RS485

differential ports, as two single-ended ports, or as one

RS485 differential port and one single-ended port. The

LTC1321/LTC1322 can provide RS232 or EIA562 compat-

ible single-ended outputs; the LTC1335 provides EIA562

compatible outputs and additionally includes an output

enable pin, allowing the receiver logic level outputs to be

three-stated.

The RS232/EIA562 transceivers operate to 120kbaud and

are in full compliance with EIA/TIA-562 specification. The

RS485 transceivers operate to 10Mbaud and are in full

compliance with RS485 and RS422 specifications. All

interface drivers feature short-circuit and thermal shut-

down protection. An enable pin allows RS485 driver

outputs to be forced into high impedance which is main-

tained even when the outputs are forced beyond supply

rails or power is off. Both driver outputs and receiver

inputs feature

±10kV

ESD protection. A loopback mode

connects the driver outputs back to the receiver inputs for

diagnostic self-test.

The LTC1321/LTC1322 can support RS232 voltage levels

when 6.5V

≤

10V and – 6.5V

≥

– 10V. The

LTC1335 supports receiver output enable but not RS232

levels. A shutdown mode reduces the I

supply current

to 15µA.

APPLICATIONS

Low Power RS485/RS422/EIA562/RS232 Interface

Cable Repeater

Level Translator

TYPICAL APPLICATI

CC1

RX OUT

DR ENABLE

DR IN

RX OUT

EE1

–5V

120Ω

LTC1322

RS485 INTERFACE

120Ω

LTC1322

4000-FT 24-GAUGE TWISTED PAIR

EIA562 INTERFACE

CC2

RX OUT

DR ENABLE

DR IN

RX OUT

DR IN

EE2

–5V

1321/22/35 TA01

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