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參數資料
型號: LTC1324CS#TRPBF
廠商: Linear Technology
文件頁數: 5/8頁
文件大小: 0K
描述: IC TXRX LOCALTALK 5V SNGL 16SOIC
標準包裝: 2,500
類型: 收發(fā)器
驅動器/接收器數: 1/1
規(guī)程: AppleTalk
電源電壓: 4.75 V ~ 5.25 V
安裝類型: 表面貼裝
封裝/外殼: 16-SOIC(0.154",3.90mm 寬)
供應商設備封裝: 16-SOIC
包裝: 帶卷 (TR)
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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