參數(shù)資料
型號(hào)： MAX1480
廠商： Maxim Integrated Products, Inc.
元件分類(lèi)： 溫度/濕度傳感器
英文描述： Digital Temperature Sensor with 2-Wire Interface 8-SOIC -40 to 125
中文描述： 完成后，隔離的RS-485/RS-422數(shù)據(jù)接口
文件頁(yè)數(shù)： 10/21頁(yè)
文件大小： 487K
代理商： MAX1480
M
Complete, Isolated RS-485/RS-422
Data Interface
10
______________________________________________________________________________________
________________________________________________________________Pin Description
Internal Connections. Leave these pins unconnected.
Logic-Side Ground. Connect to GND2 (pin 12).
3, 4
5
3, 4
5
Logic-Side (nonisolated side) +5V Supply Voltages
1, 2, 8, 10
1, 2, 8, 10
FUNCTION
PIN
D1, D2
GND1
V
CC1
–V
CC4
NAME
Shutdown Input. Ground for normal operation. When high, the power oscillator is
disabled.
7
7
Frequency Select Input. If FS = V
CC_
or is open, switch frequency is high; if FS
= GND, switch frequency is low. For optimal performance and minimal supply
current, connect FS to V
CC_
or leave unconnected.
6
6
SD
FS
Logic-Side (non-isolated side) +5V Supply Voltage
—
14
Receiver Output
. If A > B by 200mV, RO will be low; if A < B by 200mV,
RO
will
be high. Open collector; must have pullup to V
CC_
(Table 1 of Figure 1).
—
13
Logic-Side Ground. Connect to GND1 (pin 5).
12
12
V
CC5
RO
GND2
Receiver Output. If A > B by 200mV, RO will be high; if A < B by 200mV, RO
will be low. Open collector; must have pullup to V
CC
(Table 2 of Figure 2).
11
—
Driver-Enable Input. The driver outputs, A and B, are enabled by bringing DE
′
high. The driver outputs are high impedance when DE
′
is low. If the driver out-
puts are enabled, the device functions as a line driver. While the driver outputs
are high impedance, the device functions as a line receiver. Drives internal
LED cathode through a resistor (Table 1 of Figure 1).
—
11
Driver Input. With DE
′
high (MAX1480A/B/C only), a low on DI
′
forces output A
low and output B high. Similarly, a high on DI
′
forces output A high and output
B low. Drives internal LED cathode through a resistor (Table 1 of Figure 1 for
MAX1480A/B/C, Table 2 of Figure 2 for MAX1490A/B).
9
9
RO
DE
DI
Isolated Driver-Input Drive. With DE
′
high (MAX1480A/B/C only), a low on DI
′
forces output A low and output B high. Similarly, a high on DI
′
forces output A
high and output B low. Connect to ISO DI IN (on the MAX1480A/B/C only) for
normal operation. Open-collector output; connect a pullup resistor to ISO V
CC_
(Table 1 of Figure 1 for MAX1480A/B/C; Table 2 of Figure 2 for MAX1490A/B).
Isolated Common. For MAX1480A/B/C, connect to ISO COM2 (pin 16)
(Figures 1 and 2).
15
19
Isolated Supply Voltage. Connect to ISO V
CC1
(pin 26 for MAX1480A/B/C, or
pin 22 for MAX1490A/B).
14
18
Isolated Driver-Enable Drive. The driver outputs, A and B, are enabled by bring-
ing DE
′
high. The driver outputs are high impedance when DE
′
is low. If the driv-
er outputs are enabled, the device functions as a line driver. While the driver
outputs are high impedance, the device functions as a line receiver. Open-
collector output; must have pullup to ISO V
CC_
and be connected to ISO DE IN
for normal operation (Table 1 of Figure 1).
—
17
ISO DI DRV
ISO V
CC2
ISO DE DRV
Isolated Common. Connect to ISO COM1 (pin 20).
—
16
Isolated Receiver Output LED. Internal LED anode in MAX1480A/B/C and LED
cathode in MAX1490A/B. Connect to ISO RO DRV through a resistor (Table 1 of
Figure 1 for MAX1480A/B/C; Table 2 of Figure 2 for MAX1490A/B).
13
15
16
20
ISO COM1
ISO COM2
ISO RO LED
MAX1480A/B/C
MAX1490A/B
PINS ON THE NON-ISOLATED SIDE
PINS ON THE ISOLATED RS-485/RS-422 SIDE
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX14800CCM+ 功能描述:模擬開(kāi)關(guān) IC RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)數(shù)量:2 開(kāi)關(guān)配置:SPDT 開(kāi)啟電阻（最大值）:0.1 Ohms 切換電壓（最大）: 開(kāi)啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 工作電源電壓:2.7 V to 4.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-16
MAX14800CCM+T 功能描述:模擬開(kāi)關(guān) IC RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)數(shù)量:2 開(kāi)關(guān)配置:SPDT 開(kāi)啟電阻（最大值）:0.1 Ohms 切換電壓（最大）: 開(kāi)啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 工作電源電壓:2.7 V to 4.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-16
MAX14801CCM+ 功能描述:模擬開(kāi)關(guān) IC RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)數(shù)量:2 開(kāi)關(guān)配置:SPDT 開(kāi)啟電阻（最大值）:0.1 Ohms 切換電壓（最大）: 開(kāi)啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 工作電源電壓:2.7 V to 4.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-16
MAX14801CCM+T 功能描述:模擬開(kāi)關(guān) IC RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)數(shù)量:2 開(kāi)關(guān)配置:SPDT 開(kāi)啟電阻（最大值）:0.1 Ohms 切換電壓（最大）: 開(kāi)啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 工作電源電壓:2.7 V to 4.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-16
MAX14802CCM+ 功能描述:模擬開(kāi)關(guān) IC 16Ch Low Charge Inj High V A Switch RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)數(shù)量:2 開(kāi)關(guān)配置:SPDT 開(kāi)啟電阻（最大值）:0.1 Ohms 切換電壓（最大）: 開(kāi)啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 工作電源電壓:2.7 V to 4.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-16
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