ISL3170E Просмотр технического описания (PDF) - Renesas Electronics
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ISL3170E Datasheet PDF : 21 Pages
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ISL3170E, ISL3171E, ISL3172E, ISL3173E, ISL3174E, ISL3175E, ISL3176E, ISL3177E, ISL3178E
Pin Descriptions
PIN
FUNCTION
RO Receiver output: If A-B ≥ -50mV, RO is high; If A-B ≤ -200mV, RO is low; if A and B are unconnected (floating) or shorted, RO = High.
RE Receiver output enable. RO is enabled when RE is low; RO is high impedance when RE is high. If the Rx enable function is not required,
connect RE directly to GND or through a 1kΩ to 3kΩ resistor to GND.
DE Driver output enable. The driver outputs, Y and Z, are enabled by bringing DE high, and are high impedance when DE is low. If the Tx enable
function is not required, connect DE to VCC through a 1kΩ to 3kΩ resistor.
DI Driver input. A low on DI forces output Y low and output Z high. Similarly, a high on DI forces output Y high and output Z low.
GND Ground connection.
A/Y ±15kV IEC61000 ESD Protected RS-485/422 level, noninverting receiver input and noninverting driver output. Pin is an input if DE = 0; pin
is an output if DE = 1.
B/Z ±15kV IEC61000 ESD Protected RS-485/422 level, Inverting receiver input and inverting driver output. Pin is an input if DE = 0; pin is an
output if DE = 1.
A ±15kV IEC61000 ESD Protected RS-485/422 level, noninverting receiver input.
B ±15kV IEC61000 ESD Protected RS-485/422 level, inverting receiver input.
Y ±15kV IEC61000 ESD Protected RS-485/422 level, noninverting driver output.
Z ±15kV IEC61000 ESD Protected RS-485/422 level, inverting driver output.
VCC System power supply input (3.0V to 3.6V).
NC No Connection.
Typical Operating Circuits
+3.3V
+ 0.1µF
8
1 RO
VCC
R
2 RE
B/Z 7
RT
3 DE
A/Y 6
4 DI
D
GND
5
+3.3V
+
0.1µF
RT
7
6
8
VCC
B/Z
A/Y
D DI 4
DE 3
RE 2
R
GND
5
RO 1
FIGURE 1. ISL3172E, ISL3175E, ISL3178E
2 RO
+3.3V
+
1
0.1µF
VCC
A8
RT
R
B7
+3.3V
+
0.1µF
1
VCC
5Y
6Z
D DI 3
3 DI D
Z6
Y5
GND
4
RT
7B
8A
R RO 2
GND
4
FIGURE 2. ISL3171E, ISL3174E, ISL3177E
FN6307 Rev.6.00
Aug 31, 2017
Page 4 of 21
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