M51951A 查看數據表（PDF） - Renesas Electronics

零件编号

产品描述 (功能)

生产厂家

M51951A

Voltage Detecting, System Resetting IC Series

Renesas Electronics 

M51951A,B/M51952A,B

Circuit Current vs. Ambient Temperature

(M51951B, M51952B)

700

600

VCC = 5V

500

400

300

200

100

0

–40 –20 0 20 40 60 80 100

Ambient Temperature Ta (°C)

Example of Application Circuit

Reset Circuit of M5195xx Series

Supply

voltage

RL

M51951x

Output

M51952x

GND

VCC

Supply

voltage

RESET (RESET)

Logic circuit

GND

Figure 1 Reset Circuit of M5195xx Series

Notes: 1. When the detecting supply voltage is 4.25 V, M51951, M51952, M51953 and M51954 are used.

When the voltage is anything except 4.25 V, M51955, M51956, M51957 and M51958 are used.

2. When the delay time is short, M51951, M51952, M51955 and M51956 are available. These ICs have a

delay capacity and the delay time is about 200 µs.

If a longer delay time is necessary, M51953, M51954, M51957 and M51958 are used.

3. If the M5195xx 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.

4. The logic circuit preferably should not have a pull-down resistor, but if one is present, add load resistor RL to

overcome the pull-down resistor.

5. When the reset terminal in the logic circuit is of the low reset type, M51951, M51953, M51955 and M51957

are used and when the terminal is of the high reset type, M51952, M51954, M51956 and M51958 are used.

6. When a negative supply voltage is used, the supply voltage side of M5195xx and the GND side are

connected to negative supply voltage respectively.

REJ03D0775-0400 Rev.4.00 Sep 18, 2007

Page 5 of 7

Share Link: