High-speed dual-differential comparator/sense NE/SE521 FEATU
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High-speed dual-differential comparator/sense
NE/SE521
FEATURES
12ns maximum guaranteed propagation delay 20µA maximum input bias current compatible strobes outputs Large common-mode input voltage range Operates from standard supply voltages Military qualifications pending
APPLICATIONS
CONFIGURATION
Packages
INPUT INPUT OUTPUT STROBE STROBE VIEW INPUT INPUT OUTPUT STROBE
memory sense A-to-D conversion High-speed line receiver
ORDERING INFORMATION
DESCRIPTION 14-Pin Plastic Dual In-Line Package (DIP) 14-Pin Package 14-Pin Ceramic Dual In-Line Package (CERDIP) 14-Pin Ceramic Dual In-Line Package (CERDIP)
TEMPERATURE RANGE +70°C +70°C +70°C -55°C +125°C
ORDER CODE NE521N NE521D NE521F SE521F
0405B 0175D 0581B 0581B
EQUIVALENT SCHEMATIC
August 1994
853-0900 13721
High-speed dual-differential comparator/sense
NE/SE521
LOGIC FUNCTIONS
VID-VOS -VOS<VID<VOS VIDVOS STROBE STROBE OUTPUT Undefined
ABSOLUTE MAXIMUM RATINGS
SYMBOL Supply voltage VVIDR Positive Negative Differential input voltage Input voltage Common mode Strobe/gate Maximum power dissipation1 25°C (still-air) package package package Operating temperature range NE521 SE521 TSTG TSOLD Storage temperature range Lead soldering temperature sec. max) +125 +150 +300 1190 1420 1040 +5.25 PARAMETER RATING UNIT
NOTES: Derate above 25°C following rates: package 9.5mW/°C package 11.4mW/°C package 8.3mW/°C
BLOCK DIAGRAM
INPUT INPUT (12) INPUT (11) INPUT
OUTPUT
STROBE STROBE
OUTPUT STROBE
August 1994
High-speed dual-differential comparator/sense
NE/SE521
ELECTRICAL CHARACTERISTICS (SE521)
V+=+5V, V-=-5V, TA=-55°C +125°C, unless otherwise specified. SYMBOL PARAMETER Input offset voltage 25°C Over temperature range IBIAS Input bias current 25°C Over temperature range Input offset current 25°C Over temperature range Common-mode voltage range level input voltage 25°C Over temperature High level input voltage Input current High V+=+5.5V, V-=-5.5V VIH=2.7V strobe Common strobe Input Current VIL=0.5V strobe Common strobe Output voltage High Supply voltage VICC+ ICCISC Positive Negative Supply current Positive Negative Short-circuit output current V+=5.5V, V-=-5.5V, TA=25°C -115 -4.5 -5.0 -5.5 VI(S)=2.0V V+=+4.5V, V-=-4.5V, ILOAD=-1mA V+=+4.5V, V-=-4.5V, ILOAD=10mA TA=25°C, ILOAD=20mA -2.0 -4.0 V+=+4.5V, V-=-4.5V V+=+5.5V, V-=-5.5V V+=+5.5V, V-=-5.5V TEST CONDITIONS V+=+4.5V, V-=-4.5V LIMITS UNIT
August 1994
High-speed dual-differential comparator/sense
NE/SE521
ELECTRICAL CHARACTERISTICS(NE521)
V+=+5V, V-=-5V, TA=0 70°C, unless otherwise specified. SYMBOL PARAMETER Input offset voltage 25°C Over temperature range IBIAS Input bias current 25°C Over temperature range Input offset current 25°C Over temperature range Common-mode voltage range Input current High V+=+4.75V, V-=-4.75V V+=+5.25V, V-=-5.25V VIH=2.7V strobe Common strobe Input Current VIL=0.5V strobe Common strobe Output voltage VICC+ ICCISC High Supply voltage Positive Negative Supply current Positive Negative Short-circuit output current V+=5.25V, V-=-5.25V, TA=25°C -100 4.75 -4.75 -5.0 5.25 -5.25 VI(S)=2.0V V+=+4.75V, V-=-4.75V, ILOAD=-1mA V+=+5.25V, V-=-5.25V, ILOAD=20mA -2.0 -4.0 V+=+5.25V, V-=-5.25V V+=+5.25V, V-=-5.25V TEST CONDITIONS V+=+4.75V, V-=-4.75V LIMITS UNIT
ELECTRICAL CHARACTERISTICS
TA=25°C, RL=280W CL=15pF V+=5V V-=5V. SYMBOL PARAMETER FROM INPUT OUTPUT LIMITS UNIT
Large-signal switching speed
Propagation delay tPLH(D) tPHL(D) tPLH(S) tPHL(S) fMAX high1 High low1 high2 High low2 Max. operating frequency Strobe Strobe Output Output Output Output
NOTES: Response time measured from point ±100mVP-P 10MHz square wave 1.5V point output. Response time measured from 1.5V point input 1.5V point output.
August 1994
High-speed dual-differential comparator/sense
NE/SE521
TYPICAL PERFORMANCE CHARACTERISTICS
Response Time Various Input Overdrives
OUTPUT VOLTAGE 100mV INPUT VOLTAGE (mV) INPUT VOLTAGE (mV) 20mV 10mV 25oC OUTPUT VOLTAGE 50mV 100mV 10mV TESPONSE TIME (ns)
Response Time Various Input Overdrives
25oC
Response Time Temperature
(LH) (HL)
+100
+140
TIME
TIME
AMBIENT TEMPERATURE (oC)
Propagation Delay Various Input Voltages
10MHz SQUARE WAVE INPUT 25oC (LH) PROPAGATION DELAY (ns)
Propagation Delay Various Input Voltages
10MHz SQUARE WAVE INPUT 25oC
Output Voltage Ambient Temperature
OUTPUT VOLTAGE
PROPAGATION DELAY (ns)
(HL)
(LH) (HL)
1000 INPUT VOLTAGE Vp-p)
+125
INPUT VOLTAGE (mVp-p)
AMBIENT TEMPERATURE
Input Bias Current Ambient Temperature
INPT BIAS CURRENT
Input Offset Current Ambient Temperature
INPUT OFSET CURRENT
+125
+125
AMBIENT TEMPERATURE (oC)
AMBIENT TEMPERATURES (oC)
August 1994
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