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参数资料
| 型号： | LTC1324CSW |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 通用总线功能 |
| 英文描述： | Single Supply LocalTalk Transceiver |
| 中文描述： | LINE TRANSCEIVER, PDSO16 |
| 封装： | 0.300 INCH, PLASTIC, SOP-16 |
| 文件页数： | 5/8页 |
| 文件大小： | 241K |
| 代理商： | LTC1324CSW |
5
LTC1324
TYPICAL PERFOR
M
A
N
CE CHARACTERISTICS
Receiver
t
PLH
– t
PHL
vs Temperature
TEMPERATURE (
°
C)
–55
T
65
8
7
6
5
4
3
2
1
0
1324 G13
–35
125
–15
5
25
45
85 105
TEMPERATURE (
°
C)
–55
D
65
3.1
3.0
2.9
2.8
2.7
2.6
2.5
2.4
2.3
1324 G12
–35
125
–15
5
25
45
85 105
R
L
= 100
Driver Differential Output Voltage
vs Temperature
PI
FU
CTIO
N
S
U
U
NC (Pins 1, 13):
No Internal Connection.
SR (Pin 2):
Slew Rate Control (TTL Compatible). A high
level on this pin forces the RS485 driver into the low slew
rate mode. A low level forces the driver into the high slew
rate or normal mode. Connected to an internal pull-down.
TXD (Pin 3):
RS485 Driver Input (TTL Compatible).
TXDEN (Pin 4):
Driver Output Enable (TTL Compatible). A
high level on this pin and a low level on TXDEN (Pin 15)
forces the RS485 driver into three-state. A low level
enables the driver.
SHDN (Pin 5):
Shutdown Input (TTL Compatible). When
this pin is high, the chip is shut down; the driver and
receiver outputs three-state; and the supply current drops
to 1
μ
A. A low level on this pin allows normal operation.
RXEN (Pin 6):
Receiver Enable (TTL Compatible). A high
level on this pin and a low level on RXEN (Pin 14) disables
the receiver and three-states the logic outputs. A low level
allows normal operation.
RXDO (Pin 7):
RS485 Receiver Output.
GND (Pin 8):
Ground.
RXD
+
(Pin 9):
RS485 Receiver Noninverting Input. When
this pin is
≥
200mV above RXD
–
, RXDO will be high. When
this pin is
≥
200mV below RXD
–
, RXDO will be low.
RXD
–
(Pin 10):
RS485 Receiver Inverting Input.
TXD
+
(Pin 11):
RS485 Driver Noninverting Output.
TXD
–
(Pin 12):
RS485 Driver Inverting Output.
RXEN (Pin 14):
Receiver Enable (TTL Compatible). A low
level on this pin and a high level on RXEN (Pin 6) disables
the receiver and three-states the logic outputs. A high level
allows normal operation. Connected to an internal pull-
down.
TXDEN (Pin 15):
Driver Output Enable (TTL Compatible).
A low level on this pin and a high level on TXDEN (Pin 4)
forces the RS485 driver into three-state. A high level
enables the driver. Connected to an internal pull-down.
V
CC
(Pin 16):
The Positive Supply Input. 4.75V
≤
V
CC
≤
5.25V. Requires a 1
μ
F bypass capacitor to ground.
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