Datasheet LM3722, LM3723, LM3724 (Texas Instruments) - 4
| Manufacturer | Texas Instruments |
| Description | 5-Pin Microprocessor Reset Circuits |
| Pages / Page | 20 / 4 — LM3722,. LM3723,. LM3724. www.ti.com. Electrical Characteristics … |
| File Format / Size | PDF / 1.1 Mb |
| Document Language | English |
LM3722,. LM3723,. LM3724. www.ti.com. Electrical Characteristics (continued). Symbol. Parameter. Conditions. Min. Typ. Max. Units. 2.3. 0.8
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LM3722, LM3723, LM3724
SNVS154E – MAY 2001 – REVISED MARCH 2013
www.ti.com Electrical Characteristics (continued)
Typical values are at TA = +25°C. Limits with standard typeface are for TA = +25°C, and limits in boldface type apply for the operating temperature range (−40°C to +85°C) for LM372_IM5X, and (−40°C to +125°C) for LM372_EM5X, unless otherwise noted. (1)
Symbol Parameter Conditions Min Typ Max Units
VIH
2.3
VCC > VTH(MAX), LM372_ -4.63 VIL
0.8
MR Input Threshold V VIH
0.7 VCC
VCC > VTH(MAX), LM372_ -3.08, LM372_ -2.32 VIL
0.25 VCC
MR Pull-Up Resistance 22 kΩ VCC = VTH min, ISINK = 1.2mA, (LM3722-
0.3
2.32/3.08) RESET Output Voltage Low VOL V (LM3722) VCC = VTH min, ISINK = 3.2mA, (LM3722-4.63)
0.4
VCC > 1V, ISINK = 50µA
0.3
VCC > VTH max, ISOURCE = 500µA, (LM3722-
0.8VCC
RESET Output Voltage High 2.32/3.08) VOH V (LM3722) VCC > VTH max, ISOURCE = 800µA, (LM3722-4.63)
VCC−1.5
VCC = VTH max, ISINK = 1.2mA
0.3
(LM3723 -2.32/3.08) RESET Output Voltage Low VOL V (LM3723) VCC = VTH max, ISINK = 3.2mA
0.4
(LM3723 -4.63) VOH RESET Output Voltage High
0.8VCC
V 1.8V < VCC < VTH min, ISOURCE = 150µA (LM3723) VOL RESET Output Voltage Low VCC = VTH min, ISINK = 1.2 mA
0.3
V (LM3724) (LM3724 -2.32/3.08) VCC = VTH min, ISINK = 3.2 mA
0.4
(LM3724 -4.63) VCC > 1V, ISINK = 50µA
0.3
IIN RESET Output Leakage Current
0.5
µA VCC > VTH, RESET = 5.5V (LM3724) 4 Submit Documentation Feedback Copyright © 2001–2013, Texas Instruments Incorporated Product Folder Links: LM3722 LM3723 LM3724 Document Outline FEATURES APPLICATIONS DESCRIPTION Typical Application Circuits Connection Diagram Absolute Maximum Ratings Electrical Characteristics Typical Performance Characteristics Timing Diagram Circuit Information RESET OUTPUT RESET THRESHOLD MANUAL RESET INPUT (MR) Applications Information BENEFITS OF PRECISION RESET THRESHOLDS ENSURING A VALID RESET OUTPUT DOWN TO VCC = 0V OPEN DRAIN OUTPUT (LM3724) NEGATIVE-GOING VCC TRANSIENTS INTERFACING TO µPS WITH BIDIRECTIONAL RESET PINS Typical Application Circuits Revision History
LM3722, LM3723, LM3724
SNVS154E – MAY 2001 – REVISED MARCH 2013
www.ti.com Electrical Characteristics (continued)
Typical values are at TA = +25°C. Limits with standard typeface are for TA = +25°C, and limits in boldface type apply for the operating temperature range (−40°C to +85°C) for LM372_IM5X, and (−40°C to +125°C) for LM372_EM5X, unless otherwise noted. (1)
Symbol Parameter Conditions Min Typ Max Units
VIH
2.3
VCC > VTH(MAX), LM372_ -4.63 VIL
0.8
MR Input Threshold V VIH
0.7 VCC
VCC > VTH(MAX), LM372_ -3.08, LM372_ -2.32 VIL
0.25 VCC
MR Pull-Up Resistance 22 kΩ VCC = VTH min, ISINK = 1.2mA, (LM3722-
0.3
2.32/3.08) RESET Output Voltage Low VOL V (LM3722) VCC = VTH min, ISINK = 3.2mA, (LM3722-4.63)
0.4
VCC > 1V, ISINK = 50µA
0.3
VCC > VTH max, ISOURCE = 500µA, (LM3722-
0.8VCC
RESET Output Voltage High 2.32/3.08) VOH V (LM3722) VCC > VTH max, ISOURCE = 800µA, (LM3722-4.63)
VCC−1.5
VCC = VTH max, ISINK = 1.2mA
0.3
(LM3723 -2.32/3.08) RESET Output Voltage Low VOL V (LM3723) VCC = VTH max, ISINK = 3.2mA
0.4
(LM3723 -4.63) VOH RESET Output Voltage High
0.8VCC
V 1.8V < VCC < VTH min, ISOURCE = 150µA (LM3723) VOL RESET Output Voltage Low VCC = VTH min, ISINK = 1.2 mA
0.3
V (LM3724) (LM3724 -2.32/3.08) VCC = VTH min, ISINK = 3.2 mA
0.4
(LM3724 -4.63) VCC > 1V, ISINK = 50µA
0.3
IIN RESET Output Leakage Current
0.5
µA VCC > VTH, RESET = 5.5V (LM3724) 4 Submit Documentation Feedback Copyright © 2001–2013, Texas Instruments Incorporated Product Folder Links: LM3722 LM3723 LM3724 Document Outline FEATURES APPLICATIONS DESCRIPTION Typical Application Circuits Connection Diagram Absolute Maximum Ratings Electrical Characteristics Typical Performance Characteristics Timing Diagram Circuit Information RESET OUTPUT RESET THRESHOLD MANUAL RESET INPUT (MR) Applications Information BENEFITS OF PRECISION RESET THRESHOLDS ENSURING A VALID RESET OUTPUT DOWN TO VCC = 0V OPEN DRAIN OUTPUT (LM3724) NEGATIVE-GOING VCC TRANSIENTS INTERFACING TO µPS WITH BIDIRECTIONAL RESET PINS Typical Application Circuits Revision History
