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Part: MAX708TESA-T
Category:
Power Management
-> Supervisory Circuits
-> Voltage Detectors
-> Voltage Supervisory
Description: µP Supervisory Circuits , Package: Soic, Pins=8
Company: ON Semiconductor
Datasheet: Download MAX708TESA-T datasheet File size : 6567 kB
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Datasheet text preview:
MAX707, MAX708 mP Supervisory Circuits
The MAX707/708 are costeffective system supervisor circuits designed to monitor Vcc in digital systems and provide a reset signal to the host processor when necessary. No external components are required. The reset output is driven active within 20 msec of Vcc falling through the reset voltage threshold. Reset is maintained with 200 mS of delay time after Vcc rise above the reset threshold. The MAX707/708 have a low quiescent current of 12 mA at Vcc = 3.3 V, an activehigh RESET and activelow RESET with a pushpull output. The output is guaranteed valid down to Vcc = 1.0 V. The MAX707/708 have a Manual Reset MR input and a +1.25 V threshold detector for powerfail input PFI. These devices are available in a Micro8 and SOIC8 package.
Features
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8 8 Micro8t CUA SUFFIX CASE 846A 1 xxx R YW 1 xxx RYW
· Precision SupplyVoltage Monitor
MAX707: 4.63 V Reset Threshold Voltage MAX708: Standard Reset Threshold Voltages (Typical): 4.38 V, 3.08 V, 2.93 V, 2.63 V Reset Threshold Available from 1.6 V to 4.9 V with 100 mV Increments (Factory Option) 200 mS (Typ) Reset Timeout Delay 12 mA (Vcc = 3.3 V) Quiescent Current Active_High and Active_Low Reset Output Guaranteed RESET_L and RESET Output Valid to Vcc = 1.0 V Voltage Monitor for PowerFail or LowBattery Warning 8 Pin SO or Micro8 Package Computers Embedded System Battery Powered Equipment Critical mP Power Supply Monitor
VCC RESET
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= Specific Device Code (see page 9) = Factory Code = Date Code 8 8 1 SO8 ESA SUFFIX CASE 751 1 xxxxx ALYW
xxxxx = Specific Date Code (see page 9) AL = Assembly Lot Code YW = Date Code
Applications PIN CONFIGURATION
RESET 1 RESET 2 MR 3 VCC 4 (Top View) MR RESET GENERATOR VCC + VTH PFI + 1.25 V PFO (Top View) RESET MR 1 VCC 2 GND 3 PFI 4 8 RESET 7 RESET 6 NC 5 PFO 8 NC 7 PFO 6 PFI 5 GND
Micro8
SO8
GND
ORDERING INFORMATION
See detailed ordering and shipping information in the package dimensions section on page 9 of this data sheet.
Figure 1. Representative Block Diagram
© Semiconductor Components Industries, LLC, 2001
1
November, 2001 Rev. 1
Publication Order Number: MAX707/D
MAX707, MAX708
MAXIMUM RATINGS (Note 1)
Rating Supply Voltage Output Voltage Output Current (All Outputs) Input Current (VCC and GND) Thermal Resistance Junction to Air Micro8 SO8 Operating Ambient Temperature Storage Temperature Range LatchUp Performance Positive Negative 1. This device series contains ESD protection and exceeds the following tests: Human Body Model 2000 V per MILSTD883, Method 3015. Machine Model Method 200 V. 2. The maximum package power dissipation limit must not be exceeded. TJ(max) * TA with TJ(max) = 150°C PD + Rq J A TA Tstg ILATCHUP 300 280 Symbol VCC Vout Iout Iin Rq J A 248 187 40 to +85 40 to +125 °C °C mA Value 6.0 0.3 to (VCC + 0.3) 20 20 Unit V V mA mA °C/W
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MAX707, MAX708
ELECTRICAL CHARACTERISTICS (VCC = 1.0 V to 5.5 V, TA = 40°C to +85°C, unless otherwise noted. Typical values
are at TA = 25°C, VCC = 3.3 V.) Characteristics Operating Voltage Range Supply Current VCC = 3.3 V VCC = 5.5 V Reset Threshold MAX707 TA = +25°C TA = 40°C to +85°C MAX708 TA = +25°C TA = 40°C to +85°C MAX708T TA = +25°C TA = 40°C to +85°C MAX708S TA = +25°C TA = 40°C to +85°C MAX708R TA = +25°C TA = 40°C to +85°C Reset Threshold Hysteresis VCC Falling Reset Delay (VCC = VTH + 0.2 V to VTH 0.2 V) Reset Active Timeout Period RESET_L, RESET_H Output Low Voltage VCC w 1.0 V, Iol = 100 mA VCC u 2.7 V, Iol = 1.2 mA VCC u 4.5 V, Iol = 3.2 mA RESET_L, RESET_H Output High Voltage VCC w 1.0 V, Ioh = 50 mA VCC u 2.7 V, Ioh = 500 mA VCC u 4.5 V, Ioh = 800 mA MR_L Pullup Resistance MR_L Pulse Width (VTH (max) t VCC t 5.5 V) MR_L Glitch Rejection (VTH (max) t VCC t 5.5 V) MR_L High_level Input Threshold (VTH (max) t VCC t 5.5 V) MR_L Low_level Input Threshold (VTH (max) t VCC t 5.5 V) MR_L to RESET_L and RESET_H Output Delay (VTH (max) t VCC t 5.5 V) PFI Input Threshold (VCC = 3.3 V, PFI Falling) PFI Input Current PFI to PFO Delay (VCC = 3.3 V, VOVERDRIVE = 15 mV) PFO_L Output Low Voltage VCC = 2.7 V, Iol = 1.2 mA VCC = 4.5 V, Iol = 3.2 mA PFO_L Output High Voltage VCC = 2.7 V, Ioh = 500 mA VCC = 4.5 V, Ioh = 800 mA Symbol VCC ICC VTH 4.56 4.50 4.31 4.25 3.03 3.00 2.89 2.85 2.59 2.55 VHYS tPD tRP Vol Voh 0.8 VCC 0.8 VCC 0.8 VCC RM R I tMR VIH VIL tMD Vol Voh 0.8 VCC 0.8 VCC 0.3 0.3 V 50 1.0 0.7 VCC 1.20 250 0.1 0.2 1.25 0.01 3.0 0.3 VCC 1.3 250 KW mS mS V V mS V nA mS V 0.3 0.3 0.3 V 140 4.63 4.70 4.75 4.45 4.50 3.13 3.15 2.97 3.00 2.67 2.70 330 mV mS mS V 12 16 22 28 V Min 1.0 Typ Max 5.5 Unit V mA
4.38
3.08
2.93
2.63 0.01 VTH 20 200
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