参数资料
型号: LTC1322CSW#TR
厂商: Linear Technology
文件页数: 14/20页
文件大小: 0K
描述: IC TXRX RS232/485/EIA562 24SOIC
标准包装: 1,000
类型: 收发器
驱动器/接收器数: 6/6
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: 带卷 (TR)
3
LTC1321/LTC1322/LTC1335
DC ELECTRICAL CHARACTERISTICS
VCC = VDD (LTC1321/LTC1322) = 5V ±5%, VEE = –5V ±5% (Notes 2, 3)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
RS485 Driver (SEL1 = SEL2 = HIGH)
VOD1
Differential Driver Output Voltage (Unloaded)
IO = 0
q
5V
VOD2
Differential Driver Output Voltage (With Load)
Figure 1, R = 50
(RS422)
q
2.0
5
V
Figure 1, R = 27
(RS485)
q
1.5
5
V
VOD
Change in Magnitude of Driver Differential
Figure 1, R = 27
or R = 50
q
0.2
V
Output Voltage for Complementary Output States
VOC
Driver Common-Mode Output Voltage
Figure 1, R = 27
or R = 50
q
3V
VOC
Change in Magnitude of Driver Common-Mode
Figure 1, R = 27
or R = 50
q
0.2
V
Output Voltage for Complementary Output States
IOSD
Driver Short-Circuit Current
– 7V
≤ VO ≤ 12V, VO = HIGH
q
35
250
mA
– 7V
≤ VO ≤ 12V, VO = LOW (Note 4)
q
10
250
mA
IOZD
Three-State Output Current (Y, Z)
– 7V
≤ VO ≤ 12V
q
±5
±500
A
EIA/TIA-562 Driver (SEL1 = SEL2 = LOW)
VO
Output Voltage Swing
Figure 4, RL = 3k, Positve
q
3.7
4.2
V
Figure 4, RL = 3k, Negative
q
– 3.7
– 4.3
V
IOSD
Output Short-Circuit Current
VO = 0V
q
±11
±60
mA
Driver Inputs and Control Inputs
VIH
Input High Voltage
D, DE, ON/OFF, SEL1, SEL2, LB
q
2V
OE (LTC1335)
q
2V
VIL
Input Low Voltage
D, DE, ON/OFF, SEL1, SEL2, LB
q
0.8
V
OE (LTC1335)
q
0.8
V
IIN
Input Current
D, SEL1, SEL2
q
±10
A
DE, ON/OFF, LB
q
–4
– 15
A
OE (LTC1335)
q
4
15
A
RS485 Receiver (SEL1 = SEL2 = HIGH)
VTH
Differential Input Threshold Voltage
– 7V
≤ VCM ≤ 7V, Commercial
q
– 0.2
0.2
V
– 7V
≤ VCM ≤ 7V, Industrial
q
– 0.3
0.3
V
VTH
Input Hysteresis
VCM = 0V
q
70
mV
IIN
Input Current (A, B)
– 7V
≤ VIN ≤ 12V
q
±1mA
RIN
Input Resistance
– 7V
≤ VIN ≤ 12V
q
12
24
k
EIA/TIA-562 Receiver (SEL1 = SEL2 = LOW)
VTH
Receiver Input Voltage Threshold
Input Low Threshold
q
0.8
1.1
V
Input High Threshold
q
1.7
2.4
V
VTH
Receiver Input Hysteresis
q
0.1
0.6
1.0
V
RIN
Receiver Input Resistance
VIN = ±10V
3
5
7
k
Receiver Output
VOH
Receiver Output High Voltage
IO = – 3mA, VIN = 0V, SEL1 = SEL2 = LOW
q
3.5
4.6
V
VOL
Receiver Output Low Voltage
IO = 3mA, VIN = 3V, SEL1 = SEL2 = LOW
q
0.2
0.4
V
IOSR
Short-Circuit Current
0V
≤ VO ≤ VCC
q
785
mA
IOZR
Three-State Output Current
ON/OFF = 0V
q
±10
A
OE = VCC (LTC1335)
q
±10
A
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