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參數(shù)資料
| 型號： | LT1080IN |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 通用總線功能 |
| 英文描述： | Low Power 5V RS232 Dual Driver/Receiver with 0.1?μF Capacitors; Package: SO; No of Pins: 16; Temperature Range: -40?°C to 85?°C |
| 中文描述： | DUAL LINE TRANSCEIVER, PDIP18 |
| 封裝： | 0.300 INCH, PLASTIC, DIP-18 |
| 文件頁數(shù)： | 4/12頁 |
| 文件大小： | 213K |
| 代理商： | LT1080IN |
4
LT1080/LT1081
PIU
C1
+
; C1
–
; C2
+
; C2
–
(Pins 2, 4, 5, 6):
Requires an external
capacitor (
≥
1
μ
F) from C1
+
to C1
–
and another from C2
+
to C2
–
. Pin 2 can be used for connecting a second positive
supply. When a separate positive supply is used, C1 can be
deleted.
V
+
(Pin 3):
Positive Supply for RS232 Drivers.
V
+
≈
2V
CC
– 1.5V. Requires an exterenal capacitor (
≥
1
μ
F)
for charge storage. May be loaded (up to 15mA) for
external system use. Loading does reduce V
+
voltage (see
graphs). Capacitor may be tied to ground or +5V input
supply. With multiple transceivers, the V
+
and V
–
pins may
be paralleled into common capacitors.
V
–
(Pin 7):
Negative Supply for RS232 Drivers.
V
–
≈
–(2V
CC
– 2.5V). Requires an external capacitor
(
≥
1
μ
F) for charge stroage. May be loaded (up to –15mA)
for external system use. Loading does reduce V
–
voltage
(see graphs). With multiple transceivers, the V
+
and V
–
pins may be paralleled into common capacitors.
TR2 OUT; TR1 OUT (Pins 8, 15):
Driver Outputs with
RS232 Voltage Levels. Outputs are in a high impedance
state when in the SHUTDOWN mode or when power is off
(V
CC
= 0V) to allow data line sharing. Outputs are fully
short-circuit protected from (V
–
+ 30V) to (V
+
– 30V) with
power on, off or in the SHUTDOWN mode. Typical output
breakdowns are greater than
±
45V and higher applied
(Pin numbers refer to LT1080)
TEMPERATURE (
°
C)
–55
–25
0
25
50
75
100
125
D
1080/81 G01
10
8
6
4
2
0
–2
–4
–6
–8
–10
V
CC
= 5.5V
V
CC
= 4.5V
R
L
= 3k
OUTPUT HIGH
V
CC
= 5.5V
V
CC
= 4.5V
OUTPUT LOW
V
CC
= 5V
V
CC
= 5V
TIME (ms)
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
S
1080/81 G03
10
8
6
4
2
0
–2
–4
–6
–8
–10
V
+
SUPPLY
V
= 5V
C1 TO C4 = 1
μ
F
R
L
= 4.7k; V
+
TO V
–
V
–
SUPPLY
OUTPUT CURRENT (mA)
0
2
4
6
8
10 12 14 16 18 20
O
1080/81 G02
10
8
6
4
2
0
–2
–4
–6
–8
–10
CC
= 5V
V
+
OUTPUT VOLTAGE
LOADED TO V
–
LOADED TO GROUND
LOADED TO GROUND
LOADED TO V
+
V
–
OUTPUT VOLTAGE
Driver Output Voltage
Supply Generator Outputs
Supply Generation from V
CC
or Shutdown
voltages will not damage the device if moderately current
limited. Shorting one output will affect output from the
other.
REC2 IN; REC1 IN (Pins 9, 14):
Receiver Inputs. Accepts
RS232 voltage levels (
±
30V) and has 0.4V of hysteresis to
provide noise immunity. Input impedance is nominally
5k
.
REC2 OUT; REC1 OUT (Pins 10, 13):
Receiver Outputs
with TTL/CMOS Voltage Levels. Outputs are in a high
impedance state when in the SHUTDOWN mode to allow
data line sharing. Outputs are fully short-circuit protected
to ground or V
CC
with power on, off or in the SHUTDOWN
mode.
TR2 IN; TR1 IN (Pins 11, 12):
RS232 Driver Input Pins.
Inputs are TTL/CMOS compatible. Inputs should not be
allowed to float. Tie unused inputs to V
CC
.
GND (Pin 16):
Ground Pin.
V
CC
(Pin 17):
Input Supply Pin. Supply current drops to
zero in the SHUTDOWN mode.
ON/OFF (Pin 18):
Contols the operation mode of the
LT1080 and is TTL/CMOS compatible. A logic low puts the
device in the SHUTDOWN mode which reduces input
supply current to zero and places both driver and receiver
outputs in a high impedance state. A logic high fully
enables the device.
TYPICAL PERFOR AU
相關(guān)PDF資料 |
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|---|---|
| LT1080CJ | Low Power 5V RS232 Dual Driver/Receiver with 0.1?μF Capacitors; Package: SO; No of Pins: 16; Temperature Range: -40?°C to 85?°C |
| LT1080CN | Low Power 5V RS232 Dual Driver/Receiver with 0.1?μF Capacitors; Package: SO; No of Pins: 16; Temperature Range: -40?°C to 85?°C |
| LT1080MJ | Low Power 5V RS232 Dual Driver/Receiver with 0.1?μF Capacitors; Package: SO; No of Pins: 16; Temperature Range: -40?°C to 85?°C |
| LT1080ISW | Low Power 5V RS232 Dual Driver/Receiver with 0.1?μF Capacitors; Package: SO; No of Pins: 16; Temperature Range: -40?°C to 85?°C |
| LT1080 | Low Power 5V RS232 Dual Driver/Receiver with 0.1?μF Capacitors; Package: SO; No of Pins: 16; Temperature Range: -40?°C to 85?°C |
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