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參數(shù)資料
| 型號(hào)： | LTC1322CN |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 通用總線功能 |
| 英文描述： | Octal Bus Transceivers/Registers With 3-State Outputs 24-PDIP 0 to 70 |
| 中文描述： | LINE TRANSCEIVER, PDIP24 |
| 封裝： | PLASTIC, DIP-24 |
| 文件頁(yè)數(shù)： | 3/20頁(yè) |
| 文件大小： | 454K |
| 代理商： | LTC1322CN |
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3
LTC1321/LTC1322/LTC1335
DC ELECTRICAL CHARACTERISTICS
V
CC
= V
DD
(LTC1321/LTC1322) = 5V
±
5%, V
EE
= –5V
±
5% (Notes 2, 3)
SYMBOL
RS485 Driver (SEL1 = SEL2 = HIGH)
V
OD1
Differential Driver Output Voltage (Unloaded)
V
OD2
Differential Driver Output Voltage (With Load)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
I
O
= 0
Figure 1, R = 50
(RS422)
Figure 1, R = 27
(RS485)
Figure 1, R = 27
or R = 50
G
5
5
5
V
V
V
V
G
G
2.0
1.5
V
OD
Change in Magnitude of Driver Differential
Output Voltage for Complementary Output States
Driver Common-Mode Output Voltage
Change in Magnitude of Driver Common-Mode
Output Voltage for Complementary Output States
Driver Short-Circuit Current
G
0.2
V
OC
V
OC
Figure 1, R = 27
or R = 50
Figure 1, R = 27
or R = 50
G
3
V
V
G
0.2
I
OSD
–7V
≤
V
O
≤
12V, V
O
= HIGH
–7V
≤
V
O
≤
12V, V
O
= LOW (Note 4)
–7V
≤
V
O
≤
12V
G
G
35
10
250
250
±
500
mA
mA
μ
A
I
OZD
EIA/TIA-562 Driver (SEL1 = SEL2 = LOW)
V
O
Output Voltage Swing
Three-State Output Current (Y, Z)
G
±
5
Figure 4, R
L
= 3k, Positve
Figure 4, R
L
= 3k, Negative
V
O
= 0V
G
G
3.7
–3.7
4.2
–4.3
±
11
V
V
I
OSD
Driver Inputs and Control Inputs
V
IH
Input High Voltage
Output Short-Circuit Current
G
±
60
mA
D, DE, ON/OFF, SEL1, SEL2, LB
OE (LTC1335)
D, DE, ON/OFF, SEL1, SEL2, LB
OE (LTC1335)
D, SEL1, SEL2
DE, ON/OFF, LB
OE (LTC1335)
G
G
2
2
V
V
V
V
V
IL
Input Low Voltage
G
G
0.8
0.8
±
10
–15
15
I
IN
Input Current
G
G
G
μ
A
μ
A
μ
A
–4
4
RS485 Receiver (SEL1 = SEL2 = HIGH)
V
TH
Differential Input Threshold Voltage
–7V
≤
V
CM
≤
7V, Commercial
–7V
≤
V
CM
≤
7V, Industrial
V
CM
= 0V
–7V
≤
V
IN
≤
12V
–7V
≤
IN
≤
12V
G
G
–0.2
–0.3
0.2
0.3
V
V
V
TH
I
IN
R
IN
EIA/TIA-562 Receiver (SEL1 = SEL2 = LOW)
V
TH
Receiver Input Voltage Threshold
Input Hysteresis
Input Current (A, B)
Input Resistance
G
70
mV
mA
k
G
±
1
G
12
24
Input Low Threshold
Input High Threshold
G
G
0.8
1.1
1.7
0.6
5
V
V
V
2.4
1.0
7
V
TH
R
IN
Receiver Output
V
OH
V
OL
I
OSR
I
OZR
Receiver Input Hysteresis
Receiver Input Resistance
G
0.1
3
V
IN
=
±
10V
k
Receiver Output High Voltage
Receiver Output Low Voltage
Short-Circuit Current
Three-State Output Current
I
O
= –3mA, V
IN
= 0V, SEL1 = SEL2 = LOW
I
O
= 3mA, V
IN
= 3V, SEL1 = SEL2 = LOW
0V
≤
V
O
≤
V
CC
ON/OFF = 0V
OE = V
CC
(LTC1335)
G
3.5
4.6
0.2
V
V
G
0.4
85
±
10
±
10
G
7
mA
μ
A
μ
A
G
G
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