LTC1327CN 查看數據表（PDF） - Linear Technology
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LTC1327CN Datasheet PDF : 8 Pages
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LTC1327
TYPICAL PERFOR A CE CHARACTERISTICS
VCC Supply Current vs Data Rate
45
VCC = 3.3V
40
RL = 3k
35
CL = 1000pF
3 DRIVERS ACTIVE
30
25
20
15
10
5
0
0 20 40 60 80 100 120 140
DATA RATE (k BAUD)
1327 G03
Driver Leakage in SHUTDOWN
vs Temperature
45
40
35
30
25
VOUT = –20V
20
15
10
VOUT = 20V
5
0
0 10 20 30 40 50 60 70
TEMPERATURE (°C)
1327 G05
Driver Short-Circuit Current vs
Supply Voltage
14
12
10
8
ISC–
6
4
ISC+
2
0
0 10 20 30 40 50 60 70
SUPPLY VOLTAGE (V)
1327 G06
Receiver Short-Circuit Current
vs Temperature
40
35
30
25
20
ISC–
15
10
ISC+
5
Driver Output Waveform
DRIVER
OUTPUT
RL = 3k
DRIVER
OUTPUT
RL = 3k
CL = 1000pF
INPUT
0
0 10 20 30 40 50 60 70
TEMPERATURE (°C)
1327 G07
Receiver Output Waveform
RECEIVER
OUTPUT
CL = 50pF
1327 G08
INPUT
1327 G09
PI FU CTIO S
VCC: 3.3V Input Supply Pin. Supply current 0.2µA in the
SHUTDOWN mode. This pin should be decoupled with a
0.1µF ceramic capacitor.
GND: Ground Pin.
ON/OFF: TTL/CMOS Compatible Shutdown Pin. A logic
low puts the device in SHUTDOWN mode which reduces
the supply current to 0.2µA and places all drivers and
receivers in high impedance state. This pin cannot float.
V +: Positive Supply Output (EIA/TIA-562 Drivers).
V+ ≅ 2VCC – 1V. This pin requires an external capacitor
C = 0.1µF for charge storage. The capacitor may be tied to
ground or 3.3V. With multiple devices, the V + and V – pins
may be paralleled into common capacitors. For large
numbers of devices, increasing the size of the shared
common storage capacitors is recommended to reduce
ripple.
V –: Negative Supply Output (EIA/TIA-562 Drivers).
V – ≅ – (2VCC – 1.3). This pin requires an external capacitor
C = 0.1µF for a charge storage.
4
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