M51957BL#TF0J Renesas Electronics America, M51957BL#TF0J Datasheet - Page 8

• Manufacturer Part Number: M51957BL#TF0J
• Description: IC VOLTAGE DETECTOR 5-SIP
• Manufacturer: Renesas Electronics America
• Type: Simple Reset/Power-On Resetr

Specifications of M51957BL#TF0J

• 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
• Other names: Q4596265

M51957A,B/M51958A,B
Example of Application Circuit
Reset Circuit of M5195xx Series
Notes: 1. When the detecting supply voltage is 4.25 V, M51951, M51952, M51953 and M51954 are used. In this case,
Case of Using Reset Signal except Supply Voltage in the M5195xx Series
REJ03D0778-0300 Rev.3.00 Sep 18, 2007
Page 6 of 13
(a) Reset at ON
R
Input
R
1
2
2. When the delay time is short, M51951, M51952, M51955 and M51956 are available. These ICs have a
3. If the M5195xx and the logic circuit share a common power source, type A (built-in load type) can be used
4. The logic circuit preferably should not have a pull-down resistor, but if one is present, add load resistor R
5. When the reset terminal in the logic circuit is of the low reset type, M51951, M51953, M51955 and M51957
6. When a negative supply voltage is used, the supply voltage side of M5195xx and the GND side are
(External delay
capacitor type)
GND
R
When the voltage is anything except 4.25 V, M51955, M51956, M51957 and M51958 are used. In this case,
the detecting supply voltage is 1.25 × (R
set between 2 V and 15 V.
delay capacity and the delay time is about 200 µs.
If a longer delay time is necessary, M51953, M51954, M51957 and M51958 are used. In this case, the delay
time is about 0.34 × Cd (pF) µs.
whether a pull-up resistor is included in the logic circuit or not.
overcome the pull-down resistor.
are used and when the terminal is of the high reset type, M51952, M51954, M51956 and M51958 are used.
connected to negative supply voltage respectively.
Figure 2 Case of Using Reset Signal except Supply Voltage in the M5195xx Series
M5195xx
1
and R
Power-
supply
2
are not necessary.
R
R
1
2
Cd
Delay capacitor
Out
put
Input
R
L
RESET (RESET)
GND
Figure 1 Reset Circuit of M5195xx Series
M51957x
M51958x
Logic circuit
Power-
supply
Power-
supply
GND
Cd
Delay capacitor
Output
1
+R
V
CC
2
)/R
2
(V) approximately. The detecting supply voltage can be
(b) Reset at transistor ON
Control
signal
R
R
Input
R
L
1
2
(External delay
capacitor type)
GND
M5195xx
RESET (RESET)
Logic circuit
Power-
supply
Power-
supply
GND
Cd
Delay capacitor
Out
put
R
L
V
RESET (RESET)
CC
Logic circuit
Power-
supply
GND
L
V
CC
to