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Details, datasheet, quote on part number:ZM331643CL
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Datasheet text preview:
SUPPLY VOLTAGE MONITOR
ISSUE 2 NOVEMBER 1995 DEVICE DESCRIPTION
The ZM33164-3 is a three terminal under v o l t a g e mo n i t o r ci r c u i t f o r use i n mi cr op r oc es s or systems. The threshold voltage of the device has been set to 2.68 volts making it ideal for 3 volt circuits. Included in the device is a precise voltage reference and a comparator with built in hysteresis to prevent erratic operation. The ZM33164-3 features an open collector output capable of sinking at least l0mA which only r e q u i r e s a single external resistor to interface to following circuits. Operation of the device is guaranteed from one volt upwards, from this level to the device threshold voltage the output is held low providing a power on reset function. Should the supply voltage, once established, at any time drop below the threshold level then the output again will pull low. The device is available in a TO92 package for through hole applications as well as SO8 and SOT223 for surface mount requirements.
ZM33164-3
F EATURES
· · · · · · · · · · · · · · ·
SO8, SOT223 and TO92 packages Power on reset generator Automatic reset generation Low standby current Guaranteed operation from 1 volt Wide supply voltage range Internal clamp diode to discharge delay capacitor 2.68 volt threshold for 3 volt logic 60mV hysteresis prevents erratic operation
APPLICATIONS
Microprocessor systems Computers Computer peripherals Instrumentation Automotive Battery powered equipment
SCHEMATIC DIAGRAM
4-99
ZM33164-3
TYPICAL CHARACTERISTICS
500 5 RL=10K TA=25 °C
400
4
Input Current (µA)
300
Output Voltage (V)
3
200
-40 °C
25 °C 85 °C
2
100
1
0 0 2 4 6 8 10
0 0 1 2 3 4 5
Input Voltage (V)
Input Voltage (V)
Input Current vs. Input Voltage
50
in=2.4V
Output Voltage vs. Input Voltage
RL=10K
40 3.0
Sink Current (mA)
30
V
-40 °C 25 °C 85 °C
Vin (V)
2.4
4
20
10
0 0 0.4 0.8 1.2 1.6 2.0
Vout (V)
2
0 0 1 2 3 4
Output Saturation Voltage (V)
Time (µs)
Output Saturation Voltage vs. Sink Current
100 Vin = 0V 2.75 2.77
Reset Delay Time
80
Upper Threshold
Forward Current (mA)
Threshold Voltage (V)
2.73
60 85 °C 40 25 °C -40 °C 20
2.71
2.69
2.67
Lower Threshold
0 0 0.4 0.8 1.2 1.6 2.0
2.65 -40 -20 0 20 40 60 80 100
Forward Voltage (V)
Temperature ( °C)
Clamp Diode Forward Current vs. Voltage
Threshold Voltage vs. Temperature
4-101
ZM33164-3
ABSOLUTE MAXIMUM RATING
Input Supply Voltage Offstate Output Voltage Onstate Output Sink Current(Note 1) Clamp diode Forward Current(Note 1) Operating junction temperature Operating Temperature Storage Temperature -1 to 12V 12V Internally limited 100mA 150°C -40 to 85°C -65 to 150°C Power Dissipation TO92 SOT223 SO8 780mW 2W(Note 2) 780mW(Note 2)
TEST CONDITIONS (Tamb=25°C for typical values, Tamb=-40 to 85°C for min/max values (Note3)) COMPARATOR
PARAMETER Threshold Voltage High state output (Vcc increasing) Threshold Voltage Low state output (Vcc decreasing) Hysteresis SYMBOL VIH VIL VH
MIN TYP. MAX.
UNITS V V V
2.55 2.55 0.03
2.71 2.65 0.06
2.8 2.8 0.15
OUTPUT
Output sink saturation: (Vcc=2.4V, Isink=8.0mA) (Vcc=2.4V, Isink=2.0mA) (Vcc=1.0V, Isink=0.1mA) Onstate output sink current (Vcc , Output=2.4V) Offstate output leakage current (Vcc , Output=3V) Clamp diode forward voltage (If=10mA) Propagation delay (Vin 3V to 2.4V, Rl=10k, Tamb=25°C) I sin k Io h Vf Td 0.6 10 20 0.02 1.2 2.5 VOL 0.46 0.15 1.0 0.4 0.25 60 0.5 1.5 V V V mA µA V µs
TOTAL DEVICE
Operating input voltage range Quiescent input current (Vcc=3V) Vcc Iq 1.0 to 10 125 190 V µA
Note: 1. Maximum package power dissipation must be observed 2. Maximum power dissipation, for the SOT223 and SO8 packages, is calculated assuming that the device is mounted on a PCB measuring 2 inches square. 3. Low duty cycle pulse techniques are used during test to maintain junction temperatures as close to ambient as possible 4-100
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