STM1061N23WX6F ,Low power voltage detectorapplications and is available in space-saving SOT23-3 and SOT323-3 (SC70-3) packages.Figure 2.
STM1061N25WX6F ,Low power voltage detectorSTM1061Low Power Voltage DetectorFigure 1. Packages
STM1061N26WX6F ,Low power voltage detectorLogic Diagram . . . . 5Figure 3. SOT23-3 Connections . . . . . 5Figure 4. SOT323-3 (SC7 ..
STM1061N27WX6F ,Low power voltage detectorFeatures■ Factory-trimmed Voltage Thresholds in 0.1V Increments from 1.6 to 5.5V■ ±2% Voltage Thres ..
STM1061N28WX6F ,Low power voltage detectorAbsolute Maximum Ratings 13Table 4. Operating and AC Measurement Conditions . . . 14Table ..
STM1061N30WX6F ,Low power voltage detectorapplications and is available in space-saving SOT23-3 and SOT323-3 (SC70-3) packages.Figure 2.
SY10ELT22ZG , DUAL TTL-to-DIFFERENTIAL PECL TRANSLATOR
SY10ELT22ZG , DUAL TTL-to-DIFFERENTIAL PECL TRANSLATOR
SY10ELT23LZC , 3.3V, DUAL DIFFERENTIAL LVPECL-TO-LVTTL TRANSLATOR
SY10ELT23LZC , 3.3V, DUAL DIFFERENTIAL LVPECL-TO-LVTTL TRANSLATOR
SY10ELT23LZC , 3.3V, DUAL DIFFERENTIAL LVPECL-TO-LVTTL TRANSLATOR
SY10ELT23LZC , 3.3V, DUAL DIFFERENTIAL LVPECL-TO-LVTTL TRANSLATOR
STM1061N17WX6F-STM1061N19WX6F-STM1061N21WX6F-STM1061N23WX6F-STM1061N25WX6F-STM1061N26WX6F-STM1061N27WX6F-STM1061N28WX6F-STM1061N30WX6F-STM1061N34WX6F-STM1061N38WX6F
Low power voltage detector
July 2006 Rev 4 1/23
STM1061Low Power Voltage Detector
Features Factory-trimmed Voltage Thresholds in 0.1V
Increments from 1.6 to 5.5V ±2% Voltage Threshold Accuracy Operating Voltage 0.7 to 6.0V Open Drain Output Low Supply Current of 0.9µA (typ) Guaranteed OUT Assertion Down to VCC = 0.7V Power Supply Transient Immunity Available in SOT23-3 and SOT323-3 (SC70-3)
packages Operating Temperature –40 to 85°C.
Figure 1. Packages Contact local sales office for availability.
Contents STM10612/23
Contents Summary Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72.1 OUT (Open Drain) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2 V CC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.3 VSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83.1 Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2 Negative-Going VCC T ransients and Undershoot . . . . . . . . . . . . . . . . . . . . 8
Typical Operating Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Maximum Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 DC and AC Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Package Mechanical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Part Numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
STM1061 List of tables
3/23
List of tables
Table 1. Signal Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Table 2. Pin Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 3. Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 4. Operating and AC Measurement Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Table 5. DC and AC Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Table 6. SOT23-3 – 3-lead Small Outline Transistor Package Mechanical Data . . . . . . . . . . . . . . . 18
Table 7. SOT323-3 (SC70-3) – 3-lead Small Outline Transistor Package Mechanical Data . . . . . . 19
Table 8. Ordering Information Scheme. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Table 9. Factory-Trimmed Thresholds with Marking Description . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Table 10. Document Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
List of figures STM1061
4/23
List of figures
Figure 1. Packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Figure 2. Logic Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 3. SOT23-3 Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 4. SOT323-3 (SC70-3) Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 5. N-Channel Open Drain Output Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 6. STM1061N Active-Low, Open Drain Hardware Hookup. . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 7. Supply Current vs. Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 8. Supply Current vs. Ambient Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 9. Output Detect Delay Time vs. Ambient Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 10. Output Release Delay Time vs. Ambient Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 11. Maximum Transient Duration vs. Reset Threshold Overdrive . . . . . . . . . . . . . . . . . . . . . . 11
Figure 12. Detect, Release Voltage vs. Ambient Temperature for V TH– = 3.4V . . . . . . . . . . . . . . . . . 11
Figure 13. N-channel Driver Output Current vs. V DS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12Figure 14. N-channel Driver Output Current vs. Input Voltage for VDS = 0.5V . . . . . . . . . . . . . . . . . . 12
Figure 15. AC Testing Input/Output Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 16. Voltage Timing Waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 17. SOT23-3 – 3-lead Small Outline Transistor Package Outline. . . . . . . . . . . . . . . . . . . . . . . 17
Figure 18. SOT323-3 (SC70-3) – 3-lead Small Outline Transistor Package Outline. . . . . . . . . . . . . . 19
STM1061 Summary Description
5/23
1 Summary Description
The STM1061 low power voltage detector provides monitoring of battery, power-supply, and
regulated system voltages. A precision voltage reference and comparator monitors the VCC
input and compares it with a specified voltage threshold condition. When VCC falls below a
specified trip point threshold, the output (OUT) is forced low and remains asserted as long
as the VCC input remains below VTH– + hysteresis (VHYST). The STM1061 device is
guaranteed to output the correct logic state for VCC down to 0.7V. They are also designed to
ignore fast transients on VCC.
This small, low power device is ideal for portable applications and is available in space-
saving SOT23-3 and SOT323-3 (SC70-3) packages.
Figure 2. Logic Diagram
Table 1. Signal Names
Figure 3. SOT23-3 Connections
Summary Description STM1061
6/23
Figure 4. SOT323-3 (SC70-3) Connections
Figure 5. N-Channel Open Drain Output Block Diagram
Figure 6. STM1061N Active-Low, Open Drain Hardware Hookup
STM1061 Pin Descriptions
7/23
2 Pin Descriptions
See Figure 2 on page 5 and Table 1 on page 5 for a brief overview of the signals connected
to this device.
2.1 OUT (Open Drain)
This is the Open Drain Output. It goes low when VCC drops below V TH– , and remains low as
long as VCC is below V TH– + V HYST.
2.2 V CC
This is the Supply voltage and input for the Voltage Detector.
2.3 V SS
Ground, VSS, is the reference for the power supply. It must be connected to the system
ground.
Table 2. Pin Functions
Operation STM1061
8/23
3 Operation
3.1 Output
The STM1061 Voltage Detector monitors system voltages from 1.6 to 5V in 100mV
increments. The detector is designed to ignore fast transients on VCC and has a voltage
hysteresis (V HYST ). The STM1061 asserts an output signal (OUT) whenever VCC goes
below the Voltage Detect Threshold (V TH– ). The output signal (OUT) stays asserted until CC goes above the Voltage Detect Release (V TH+ ). Output voltage (V OUT ) is guaranteed
valid down to VCC =0.7V at 25°C.
The STM1061has an open drain active-low output which will sink current when output is
asserted. Connect a pull-up resistor from OUT to any supply voltage up to 6V (see Figure6
on page 6). Select a resistor value large enough to register a logic low, and small enough to
register a logic high while all of the input current and leakage paths connected to the reset
output line are being supplied. A 10k pull-up is sufficient in most applications.
The advantages of open drain output is the ability to connect more open drain outputs in
parallel (wired OR connections) as well as connect the output to a power supply voltage
different from VCC.
3.2 Negative-Going V CC Transients and Undershoot
The STM1061 device is relatively immune to negative-going VCC transients (glitches). The
graph (see Figure 11 on page 11) indicates the maximum pulse width a negative VCC
transient can have without causing a reset pulse. As the magnitude of the transient
increases (further below the threshold), the maximum allowable pulse width decreases. Any
combination of duration and overdrive which lies under the curve will NOT generate a reset
signal.
A 0.1µF bypass capacitor mounted as close as possible to the VCC pin provides additional
transient immunity.
STM1061 Typical Operating Characteristics
9/23 Typical Operating Characteristics
Figure 7. Supply Current vs. Input Voltage
Figure 8. Supply Current vs. Ambient Temperature
Typical Operating Characteristics STM1061
10/23
Figure 9. Output Detect Delay Time vs. Ambient Temperature
Figure 10. Output Release Delay Time vs. Ambient Temperature
STM1061 Typical Operating Characteristics
11/23
Figure 11. Maximum Transient Duration vs. Reset Threshold Overdrive Reset occurs above the curve.
Figure 12. Detect, Release Voltage vs. Ambient Temperature for VTH– = 3.4V
Typical Operating Characteristics STM1061
12/23
Figure 13. N-channel Driver Output Current vs. VDS
Figure 14. N-channel Driver Output Current vs. Input Voltage for VDS = 0.5V
