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| 型号： | LTC1324CS#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 5/8页 |
| 文件大小： | 0K |
| 描述： | IC TXRX LOCALTALK 5V SNGL 16SOIC |
| 标准包装： | 50 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 1/1 |
| 规程： | AppleTalk |
| 电源电压： | 4.75 V ~ 5.25 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SOIC |
| 包装： | 管件 |
LTC1324
5
1324fa
TYPICAL PERFORMANCE CHARACTERISTICS
Driver Differential Output Voltage
vs Temperature
Receiver
tPLH – tPHL
vs Temperature
TEMPERATURE (C)
–55
DIFFERENTIAL
VOLTAGE
(V)
65
3.1
3.0
2.9
2.8
2.7
2.6
2.5
2.4
2.3
1324 G12
–35
125
–15
525
45
85 105
RL = 100Ω
TEMPERATURE (C)
–55
TIME
(ns)
65
8
7
6
5
4
3
2
1
0
1324 G13
–35
125
–15
525
45
85 105
PIN FUNCTIONS
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 en-
ables the driver.
SHDN (Pin 5): Shutdown Input (TTL Compatible). When
this pin is high, the chip is shut down; the driver and re-
ceiver outputs three-state; and the supply current drops
to 1μA. 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.
VCC (Pin 16): The Positive Supply Input. 4.75V ≤ VCC ≤
5.25V. Requires a 1μF bypass capacitor to ground.
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