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Standby current for RS-422 repeater is less than 3µA

VCC D1 1N4148 R1 4.7M C1 220pF 8 7 R3 120 A1 6 5 VCC B A GND U1 RO RE DE DI 1 2 3 4 1 2 U3B 74HC00 4 5 6

DESIGN SHOWCASE
Standby current for RS-422 repeater is less than 3µA
VCC D1 1N4148 R1 4.7M C1 220pF 8 7 R3 120 A1 6 5 VCC B A GND U1 RO RE DE DI 1 2 3 4 1 2 U3B 74HC00 4 5 6
VCC C3 100nF B1
1 CLK D VCC CLR PRE 4 10 U3C 74HC00 8 D CLK PRE CLR 13 11 12 11 Q Q U4B 74HC74 9 8 3 U3A 74HC00 3 2 Q Q 6 5 U4A 74HC74
MAX3471
GND1 VCC 9 10
C4 100nF
B2 R4 120 A2
MAX3471
VCC 4 D2 1N4148 R2 12 4.7M 13 C2 220pF U3D 74HC00
Figure 1. This RS-422 repeater draws only 3µA of standby current.
Figure 2. An input data byte causes the repeater to transmit the byte, then go to standby. Vertical scale is 1V per division horizontal scale is 400µs per division.