M51957BL Renesas Electronics America, M51957BL Datasheet - Page 10

• Manufacturer Part Number: M51957BL
• Description: IC VOLTAGE DETECTOR 5-SIP
• Manufacturer: Renesas Electronics America
• Type: Simple Reset/Power-On Resetr

Specifications of M51957BL

• Number Of Voltages Monitored: 1
• Output: Open Drain or Open Collector
• Reset: Active Low
• Reset Timeout: 1.6 ms Minimum
• Voltage - Threshold: 1.25V
• Operating Temperature: -30°C ~ 85°C
• Mounting Type: Through Hole
• Package / Case: 5-SIP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

M51957A,B/M51958A,B
Notice for use
About the Power Supply Line
1. About bypass capacitor
2. The sequence of voltage impression
About the Input Terminal
1. Setting range of input voltage
2. About using input terminal
REJ03D0778-0300 Rev.3.00 Sep 18, 2007
Page 8 of 13
Because the ripple and the spike of the high frequency noise and the low frequency are superimposed to the power
supply line, it is necessary to remove these.
Therefore, please install C
and the GND line as shown in following figure 5.
Please do not impress the voltages to the input terminals earlier than the power supply terminal. Moreover, please
do not open the power supply terminal with the voltage impressed to the input terminal.
(The setting of the bias of an internal circuit collapses, and a parasitic element might operate.)
The following voltage is recommended to be input to the input terminal (pin 2).
Please do an enough verification to the transition characteristic etc. of the power supply when using independent
power supply to input terminal (pin 2).
about 0.8 (V) < Vin < V
about 0.8 (V) < Vin < 6.7 (V) .............. at V
V
CC
Vin
V
CC
Example of ripple
noise measures
1
Input
C
and C
1
+
CC
Figure 5 Example of Ripple Noise Measures
GND
– 0.3 (V) .... at V
2
C
for the low frequency and for the high frequency between the power supply line
2
Figure 6 Recommended Example
M51957
M51958
Power-supply
R
R
Vin
1
2
Delay capacitor
Cd
CC
CC
Output
Input
≤ 7 V
> 7 V
GND
Vin is decided to the V
and operates in the range
about 0.8 (V) < Vin < V
M51957
M51958
Power-supply
Delay capacitor
Cd
Output
CC
CC
subordinating,
– 0.3 (V).