RNA51953A, B

Preliminary

R03DS0009EJ0500 Rev.5.00

Page 7 of 10

Jun 19, 2012

Example of Application Circuit

Reset Circuit of RNA51953

RNA51953x

RESET

Logic circuit

GND

Delay capacitor

GND

Cd

Power-

supply

Power-

supply

Output

Figure 1 Reset Circuit of RNA51953

Notes: 1. The delay time is about 0.34

 Cd (pF) s.

2. If the RNA51953 and the logic circuit share a common power source, type A (built-in load type) can be used

whether a pull-up resistor is included in the logic circuit or not.

overcome the pull-down resistor.

4. When a negative supply voltage is used, the supply voltage side of RNA51953 and the GND side are

connected to negative supply voltage respectively.

Case of Using Reset Signal except Supply Voltage in the RNA51953

Out

put

RNA51953x

RNA51953x

(a) Reset at ON

RESET

Logic circuit

Out

put

GND

Delay capacitor

GND

Cd

(b) Reset at transistor ON

RESET

Logic circuit

GND

Delay capacitor

GND

Cd

Control

signal

Power-

supply

Power-

supply

Power-

supply

Power-

supply

Figure 2 Case of Using Reset Signal except Supply Voltage in the RNA51953