LT1713/LT1714
Single/Dual, 7ns, Low Power,
3V/5V/±5V Rail-to-Rail Comparators
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FEATURES
DESCRIPTIO
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Ultrafast: 7ns at 20mV Overdrive
The LT®1713/LT1714 are UltraFastTM 7ns, single/dual
comparators featuring rail-to-rail inputs, rail-to-rail
complementary outputs and an output latch. Optimized
for 3V and 5V power supplies, they operate over a single
supply voltage range from 2.4V to 12V or from ±2.4V to
±6V dual supplies.
8.5ns at 5mV Overdrive
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Rail-to-Rail Inputs
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Rail-to-Rail Complementary Outputs
(TTL/CMOS Compatible)
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Specified at 2.7V, 5V and ±5V Supplies
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Low Power (Per Comparator): 5mA
Output Latch
The LT1713/LT1714 are designed for ease of use in a
variety of systems. In addition to wide supply voltage
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Inputs Can Exceed Supplies Without Phase Reversal
LT1713: 8-Lead MSOP Package
LT1714: 16-Lead Narrow SSOP Package
flexibility, rail-to-rail input common mode range extends
100mV beyond both supply rails and the outputs are
protected against phase reversal for inputs extending
furtherbeyondtherails. Also, therail-to-railinputsmaybe
taken to opposite rails with no significant increase in input
current. The rail-to-rail matched complementary outputs
interface directly to TTL or CMOS logic and can sink 10mA
towithin0.5VofGNDorsource10mAtowithin0.7VofV+.
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APPLICATIO S
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High Speed Automatic Test Equipment
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Current Sense for Switching Regulators
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Crystal Oscillator Circuits
The LT1713/LT1714 have internal TTL/CMOS compatible
latches for retaining data at the outputs. Each latch holds
data as long as its latch pin is held high. Latch pin
hysteresis provides protection against slow moving or
noisy latch signals. The LT1713 is available in the 8-lead
MSOP package. The LT1714 is available in the 16-lead
narrow SSOP package.
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High Speed Sampling Circuits
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High Speed A/D Converters
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Pulse Width Modulators
Window Comparators
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Extended Range V/F Converters
Fast Pulse Height/Width Discriminators
Line Receivers
High Speed Triggers
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, LTC and LT are registered trademarks of Linear Technology Corporation.
UltraFast is a trademark of Linear Technology Corporation.
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TYPICAL APPLICATIO
A 4× NTSC Subcarrier Voltage-Tunable Crystal Oscillator
5V
LT1713/LT1714 Propagation Delay
vs Input Overdrive
47k* LT1004-2.5
1N4148
1M*
3.9k*
1k*
V
IN
0V TO 5V
9.0
8.5
8.0
7.5
1M
T
= 25°C
= 5V
A
+
V
V
V
–
= 0V
MV-209
VARACTOR
DIODE
5V
= 100mV
STEP
1M
0.047µF
C SELECT
+
t
PD
1M
2k
(CHOOSE FOR CORRECT
PLL LOOP RESPONSE)
–
100pF
t
PD
7.0
6.5
390Ω
Y1** 15pF 100pF
+
6.0
5.5
5.0
LT1713
FREQUENCY
OUTPUT
–
171314 TA01
2k
0
10
20
40
50
60
30
200pF
INPUT OVERDRIVE (mV)
* 1% FILM RESISTOR
** NORTHERN ENGINEERING LABS C-2350N-14.31818MHz
171314 TA02
1