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Part: MAX6352-T_
Category:
Description: MAX6352-XX; Dual Voltage Microprocessor Supervisory ic
Company: Philips Semiconductors
Datasheet: Download MAX6352-T_ datasheet File size : 383 kB
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INTEGRATED CIRCUITS
MAX6352-XX Dual voltage microprocessor supervisory IC
Product data 2003 Aug 01
Philips Semiconductors
Philips Semiconductors
Product data
Dual voltage microprocessor supervisory IC
MAX6352-XX
GENERAL DESCRIPTION
The MAX6352-XX microprocessor (µP) supervisory IC has dual power supply voltage monitoring in which all reset outputs are asserted when either power supply voltage falls below its preset threshold reset level. The reset state is guaranteed valid as long as either VDD1 or VDD2 is above +1 V. The MAX6352-XX has an active-LOW debounced manual reset input and an open drain, active-LOW RESET output. It is offered in specific reset threshold levels as shown in the Voltage Threshold Levels table. The MAX6352-XX is available in the 5-pin SOT23 package and operates over the extended temperature range of 40 °C to +85 °C. The MAX6352-XX is housed in a SOT23-5 5-lead package.
FEATURES
· Precision monitoring of multiple +1.8 V, +2.5 V, 3.0 V, +3.3 V, and
+5 V power supply voltages
· Factory set precision reset thresholds · 20 µA supply current · 100 ms power-on-reset delay time · Debounced manual reset input: TTL/CMOS compatible · Guaranteed parameters over temperature · Guaranteed RESET valid to VDD1 or VDD2 =1 V
SIMPLIFIED DEVICE DIAGRAM
LM75A DIGITAL TEMPERATURE SENSOR AND THERMAL VDD WATCHDOG
· Power supply transient immunity · Small 5-pin SOT23 package · Low cost, high reliability solution
APPLICATIONS
· Computers and controllers · Portable/battery-powered equipment · Multi-voltage systems · Industrial and intelligent instrumentation
VDD2 = 3.3 V
VDD1 = 5.0 V
V DD2
VDD1 RESET
VDD RESET MICROPROCESSOR
PUSH BUTTON RESET SWITCH
MAX6352LS
MR GND
P87LPC764
GND
SL01868
Figure 1. Simplified device diagram.
2003 Aug 01
2
Philips Semiconductors
Product data
Dual voltage microprocessor supervisory IC
MAX6352-XX
ORDERING INFORMATION
PACKAGE TYPE NUMBER NUMBER MAX6352-XXD NAME SOT23-5 DESCRIPTION plastic small outline package; 5 leads; body width 1.5 mm TEMPERATURE RANGE 40 °C to +85 °C
NOTE: The device has 1 standard voltage output options, indicated by the XX on the Type Number. Additional voltage options may be available; see Table 1.
Table 1. Voltage threshold levels
XX VCC1 NOMINAL THRESHOLD VOLTAGE (V) 2.93 4.63 4.63 4.63 4.38 4.38 4.38 3.08 3.08 2.93 2.93 2.93 3.08 3.08 2.78 2.78 2.63 2.63 VCC2 NOMINAL THRESHOLD VOLTAGE (V) 1.58 3.08 2.93 2.63 3.08 2.93 2.63 2.19 1.58 2.32 2.19 1.67 2.32 1.67 1.67 1.58 1.67 1.58 Standard versions (note 1) SV Non-standard versions (note 2) LT LS LR MT MS MR TY TV SZ SY SW TZ TW UW UV RW RV
NOTES: 1. Sample stock is available only in standard versions. 2. Contact factory for availability of non-standard versions.
PIN CONFIGURATION
PIN DESCRIPTION
PIN SYMBOL RESET GND MR DESCRIPTION Active-LOW Reset Output. Open drain output configuration. Ground Manual Reset Input. Pull LOW to assert a reset. RESET is active-LOW as long as MR is LOW and remains LOW for the timeout period after MR goes HIGH. If not used connect to VDD1 or leave floating. Supply input. Powers the device when it is above VDD1 and monitors its own voltage Supply input. Powers the device when it is above VDD2 and monitors its own voltage. 1 2
RESET
1
5
V DD1
GND
2
MAX6352
4 V DD2
3
MR
3
SL01869
4 5
VDD2 VDD1
Figure 2. Pin configuration.
2003 Aug 01
3
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