MAX4589 查看數據表（PDF） - Maxim Integrated
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MAX4589 Datasheet PDF : 20 Pages
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Low-Voltage, High-Isolation,
Dual 2-Channel RF/Video Multiplexer
Pin Description
PIN
1, 5, 16
2
3
4
6
7
NAME
GND
COM1
V+
NO1
NO2
2/4
8
RS
9
LE/CS
10
A1/SCLK
11 A0/DOUT
12
EN
13
DIN
14
VL
15
NO4
17
NO3
18
V-
19
COM2
20
SER/PAR
FUNCTION
Ground. Connect to ground plane. See Grounding section.
Analog Switch Common Terminal. See Truth Tables.
Analog Positive Supply Voltage Input
Normally Open Analog Input Terminal. See Truth Tables.
Normally Open Analog Input Terminal. See Truth Tables.
Multiplexer Configuration Control. Connect to VL to select dual 2-channel mode. Connect to GND for single
4-channel multiplexer operation. See Truth Tables.
Active-Low Reset Input. In serial mode, drive RS low to force the latches and shift registers to the power-on
reset state and force all switches open. In parallel mode, drive RS low to force the latches to the power-on
reset state and force switches open. See Truth Tables.
In parallel mode this pin is the transparent Latch Enable. In the serial mode, this pin is the Chip-Select input.
See Truth Tables.
In parallel mode, A1/SCLK is the most significant address bit. If 2/4 is high, A1/SCLK is ignored. In the serial
mode, A1/SCLK is the serial shift clock input. Data is loaded on the rising edge of SCLK. See Truth Tables.
In parallel mode, this pin is the least significant address bit. In serial mode, DOUT is the output from the
internal 4-bit shift register. DOUT is intended for daisy-chain cascading. DOUT is not three-stated by CS.
See Serial Operation.
Switch Enable. Drive EN low to force all channels off. Drive high to allow normal multiplexer operation.
Operates asynchronously in serial mode. In parallel mode, EN is latched when the LE signal is high.
Serial Data Input. In serial mode, data is loaded on the rising edge of SCLK. Connect to VL or GND in
parallel mode.
Logic Supply Input. Powers the DOUT driver and other digital circuitry. VL sets both the input threshold
levels and the output logic levels.
Normally Open Analog Input Terminal. See Truth Tables.
Normally Open Analog Input Terminal. See Truth Tables.
Analog Negative Supply Voltage Input. Connect to GND for single-supply operation.
Analog Switch Common Terminal. See Truth Tables.
Interface Select Input. Drive low for parallel data interface operation. Drive high for serial data interface
operation and to enable the DOUT driver.
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