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参数资料
型号： LTC1321ISW#PBF
厂商： Linear Technology
文件页数： 1/20页
文件大小： 0K
描述： IC TXRX RS232/485/EIA562 24-SOIC
标准包装： 32
类型： 收发器
驱动器/接收器数： 4/4
规程： RS562
电源电压： 4.75 V ~ 5.25 V
安装类型： 表面贴装
封装/外壳： 24-SOIC（0.295"，7.50mm 宽）
供应商设备封装： 24-SOIC
包装： 管件
1
LTC1321/LTC1322/LTC1335
RS232/EIA562/RS485
Transceivers
S
FEATURE
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
≤ VDD ≤ 10V and –6.5V ≥ VEE ≥ –10V. The
LTC1335 supports receiver output enable but not RS232
levels. A shutdown mode reduces the ICC supply current
to 15
A.
D
U
ESCRIPTIO
APPLICATIONS
U
s
Low Power RS485/RS422/EIA562/RS232 Interface
s
Cable Repeater
s
Level Translator
s
LTC1321: 2-EIA562/RS232 Transceivers/2-RS485
Transceivers
s
LTC1322: 4-EIA562/RS232 Transceivers/2-RS485
Transceivers
s
LTC1335: 4-EIA562 Transceivers/2-RS485
Transceivers with OE
s
LTC1321/LTC1322 Have the Same Pinout as
SP301/SP302
s
LTC1335 Features Receiver Three-State Outputs
s
Low Supply Current: 1mA Typical
s
15
A Supply Current in Shutdown
s
120kBaud in EIA/TIA-562 or RS232 Mode
s
10MBaud in RS485/RS422 Mode
s
Self-Testing Capability in Loopback Mode
s
Power-Up/Down Glitch-Free Outputs
s
Driver Maintains High Impedance in Three-State,
Shutdown or With Power Off
s
Thermal Shutdown Protection
s
I/O Lines Can Withstand
±25V
s
Withstands Repeated 10kV ESD Pulses
U
A
O
PPLICATI
TYPICAL
19
5V
6
5V
7
5V
18
0V
1
24
VCC2
5V
1
24
VCC1
5V
120
2
LTC1322
1321/22/35 TA01
RX OUT
21
RS485 INTERFACE
DR ENABLE
3
4
5
12
22
DR IN
20
13
VEE1
–5V
11
19
LTC1322
RX OUT
16
5V
DR ENABLE
10
9
8
7
6
12
15
DR IN
17
5V
18
13
VEE2
–5V
120
4000-FT 24-GAUGE TWISTED PAIR
5V
0V
8
DR IN
17
3
22
RX OUT
11
14
RX OUT
4
DR IN
21
EIA562 INTERFACE
9
DR IN
16
2
23
RX OUT
10
15
RX OUT
5
DR IN
20
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LTC1322CSW#TR 功能描述:IC TXRX RS232/485/EIA562 24SOIC RoHS:否 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:27 系列:- 类型:收发器 驱动器/接收器数:3/3 规程:RS232，RS485 电源电压:4.75 V ~ 5.25 V 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC 包装:管件
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