LM161,LM361 LM161/LM361 High Speed Differential Comparators Literature Number: SNOSBJ5B LM161/LM361 High Speed Differential Comparators General Description Features The LM161/LM361 is a very high speed differential input, complementary TTL output voltage comparator with improved characteristics over the SE529/NE529 for which it is a pin-for-pin replacement. The device has been optimized for greater speed performance and lower input offset voltage. Typically delay varies only 3 ns for over-drive variations of 5 mV to 500 mV. It may be operated from op amp supplies ( 15V). n n n n n n n n Complementary outputs having maximum skew are provided. Applications involve high speed analog to digital converters and zero-crossing detectors in disk file systems. Connection Diagrams Independent strobes Guaranteed high speed: 20 ns max Tight delay matching on both outputs Complementary TTL outputs Operates from op amp supplies: 15V Low speed variation with overdrive variation Low input offset voltage Versatile supply voltage range Logic Diagram Dual-In-Line Package 00570804 *Output is low when current is drawn from strobe pin. 00570802 Top View Order Number LM361M, LM361MX or LM361N See NS Package Number M14A or N14A Metal Can Package 00570803 Order Number LM161H/883 or LM361H See NS Package Number H10C (c) 2004 National Semiconductor Corporation DS005708 www.national.com LM161/LM361 High Speed Differential Comparators August 2000 LM161/LM361 Absolute Maximum Ratings (Note 1) Min LM361 If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Positive Supply Voltage, V+ +16V Negative Supply Voltage, V- -16V Typ Max 5V 15V LM161 -6V -15V LM361 -6V -15V Supply Voltage V- Supply Voltage VCC Gate Supply Voltage, VCC +7V LM161 4.5V 5V 5.5V Output Voltage +7V LM361 4.75V 5V 5.25V Differential Input Voltage 5V 6V Input Common Mode Voltage Power Dissipation ESD Tolerance (Note 5) Soldering Information 600 mW Storage Temperature Range Dual-In-Line Package -65C to +150C Operating Temperature Range TMIN LM161 Soldering (10 seconds) TMAX 260C Small Outline Package -55C to +125C -25C to +85C LM361 1600V Vapor Phase (60 seconds) 215C Infrared (15 seconds) 220C 0C to +70C Lead Temp. (Soldering, 10 seconds) For Any Device Lead Below V See AN-450 "Surface Mounting Methods and Their Effect on Product Reliability" for other methods of soldering surface mount devices. 260C - 0.3V Operating Conditions Min Supply Voltage V Typ Max + LM161 5V 15V Electrical Characteristics (V+ = +10V, VCC = +5V, V- = -10V, TMIN TA TMAX, unless noted) Limits Parameter Conditions LM161 Min Input Offset Voltage LM361 Typ Max 1 3 Input Bias Current TA=25C 5 Input Offset Current TA=25C 2 Min Units Typ Max 1 5 10 20 A 30 2 3 mV A A 5 A Voltage Gain TA=25C 3 3 V/mV Input Resistance TA=25C, f=1 kHz 20 20 k Logical "1" Output Voltage VCC=4.75V, 3.3 V 2.4 3.3 2.4 ISOURCE=-0.5 mA Logical "0" Output Voltage VCC=4.75V, 0.4 0.4 V 200 200 A -1.6 -1.6 mA 0.8 0.8 V -55 mA ISINK=6.4 mA Strobe Input "1" Current VCC=5.25V, (Output Enabled) VSTROBE=2.4V Strobe Input "0" Current VCC=5.25V, (Output Disabled) VSTROBE=0.4V Strobe Input "0" Voltage VCC=4.75V Strobe Input "1" Voltage VCC=4.75V Output Short Circuit Current VCC=5.25V, VOUT=0V Supply Current I www.national.com + 2 -18 V+=10V, V-=-10V, VCC=5.25V, -55CTA125C 2 -55 4.5 2 -18 V mA (Continued) (V+ = +10V, VCC = +5V, V- = -10V, TMIN TA TMAX, unless noted) Limits Parameter Conditions LM161 Min Supply Current I + V+=10V, V-=-10V, VCC=5.25V, 0CTA70C Supply Current I - V+=10V, V-=-10V, VCC=5.25V, -55CTA125C Supply Current I- Typ LM361 Max Min Typ Units Max 5 10 mA mA V+=10V, V-=-10V,VCC=5.25V, 0CTA70C 10 mA V+=10V, V-=-10V, Supply Current ICC VCC=5.25V, 18 mA -55CTA125C V+=10V, V-=-10V, Supply Current ICC VCC=5.25V, Transient Response VIN = 50 mV overdrive 20 mA 0CTA70C (Note 3) Propagation Delay Time (tpd(0)) TA=25C 14 20 14 20 ns Propagation Delay Time (tpd(1)) TA=25C 14 20 14 20 ns Delay Between Output A and B TA=25C 2 5 2 5 ns Strobe Delay Time (tpd(0)) TA=25C 8 8 ns Strobe Delay Time (tpd(1)) TA=25C 8 8 ns Note 1: The device may be damaged by use beyond the maximum ratings. Note 2: Typical thermal impedances are as follows: 00570817 Note 3: Measurements using AC Test circuit, Fanout = 1. The devices are faster at low supply voltages. Note 4: Refer to RETS161X for LM161H and LM161J military specifications. Note 5: Human body model, 1.5 k in series with 100 pF. 3 www.national.com LM161/LM361 Electrical Characteristics LM161/LM361 Typical Performance Characteristics Input Currents vs Ambient Temperature Offset Voltage 00570809 00570808 Supply Current vs Ambient Temperature Input Characteristics 00570810 00570811 Supply Current vs Supply Voltage Propagation Delay vs Ambient Temperature 00570812 www.national.com 00570813 4 LM161/LM361 Typical Performance Characteristics (Continued) Delay of Output 1 With Respect to Output 2 vs Ambient Temperature Strobe Delay vs Ambient Temperature 00570815 00570814 Common-Mode Pulse Response Propagation Delay vs Supply Voltage 00570807 00570816 AC Test Circuit 00570806 VIN = 50 mV FANOUT = 1 FANOUT = 4 V- = -10V V+ = +10V R = 2.4k R = 680 VCC = 5.25V 5 C=15 pF C = 30 pF www.national.com LM161/LM361 Schematic Diagram LM161 00570801 R10, R16: 85 R11, R17: 205 www.national.com 6 LM161/LM361 Physical Dimensions inches (millimeters) unless otherwise noted Metal Can Package (H) Order Number LM161H/883, or LM361H NS Package Number H10C Order Number LM361M or LM361MX NS Package Number M14A 7 www.national.com LM161/LM361 High Speed Differential Comparators Physical Dimensions inches (millimeters) unless otherwise noted (Continued) Molded Dual-In-Line Package (N) Order Number LM361N NS Package Number N14A National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications. 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