EL5287C Elantec Semiconductor, EL5287C Datasheet

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EL5287C

Manufacturer Part Number
EL5287C
Description
Dual and Window 4ns High-Speed Comparators
Manufacturer
Elantec Semiconductor
Datasheet
Note: All information contained in this data sheet has been carefully checked and is believed to be accurate as of the date of publication; however, this data sheet cannot be a “controlled document”. Current revisions, if any, to these
specifications are maintained at the factory and are available upon your request. We recommend checking the revision level before finalization of your design documentation.
© 2001 Elantec Semiconductor, Inc.
Features
Applications
Ordering Information
• 4ns typ. propagation delay
• 5V to 12V input supply
• +2.7V to +5V output supply
• True-to-ground input
• Rail-to-rail outputs
• Separate analog and digital
• Active low latch
• Single available (EL5185C)
• Quad available (EL5485C &
• Pin-compatible 6ns family
• Threshold detection
• High speed sampling circuits
• High speed triggers
• Line receivers
• PWM circuits
• High speed V/F converters
EL5287CY
EL5287CY-T13
supplies
EL5486C)
available (EL5x81C, EL5283C &
EL5482C)
Part No.
10-Pin MSOP
10-Pin MSOP
Package
Tape & Reel
13”
-
MDP0043
MDP0043
Outline #
EL5287C - Preliminary
Dual and Window 4ns High-Speed Comparators
General Description
The EL5287C comparator is designed for operation in single supply
and dual supply applications with 5V to 12V between V
For single supplies, the inputs can operate from 0.1V below ground for
use in ground sensing applications.
The output side of the comparators can be supplied from a single sup-
ply of 2.7V to 5V. The rail-to-rail output swing enables direct
connection of the comparator to both CMOS and TTL logic circuits.
The latch input of the EL5287C can be used to hold the comparator
output value by applying a low logic level to the pin.
The EL5287C contains two comparators set up as a window compara-
tor. A single input is compared with a high and low reference. When
the output goes beyond one of these reference signals, the relevant out-
put goes high.
The EL5287C is available in the 10-pin MSOP package and is speci-
fied for operation over the full -40°C to +85°C temperature range.
Also available are a single (EL5185C) and quad versions (EL5485C
and EL5486C.)
Pin Configurations
VREFH
VREFL
VS+
VS-
IN
1
2
3
4
5
(10-Pin MSOP)
EL5287C
+
+
-
-
10
9
8
7
6
VSD
OUTH
LATCH
OUTL
GND
S
+ and V
S
-.

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EL5287C Summary of contents

Page 1

... The rail-to-rail output swing enables direct connection of the comparator to both CMOS and TTL logic circuits. The latch input of the EL5287C can be used to hold the comparator output value by applying a low logic level to the pin. The EL5287C contains two comparators set window compara- tor ...

Page 2

... EL5287C - Preliminary Dual and Window 4ns High-Speed Comparators Absolute Maximum Ratings Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. Analog Supply Voltage ( ...

Page 3

... Temperature (°C) Output Low Voltage vs Temperature 0.285 0.275 0.265 0.255 0.245 0.235 -50 -30 - Temperature (°C) EL5287C - Preliminary Dual and Window 4ns High-Speed Comparators Output High Voltage vs Temperature 4.832 4.83 4.828 4.826 4.824 4.822 4.82 4.818 5 6 -50 -30 Input Bias Current vs Temperature ...

Page 4

... EL5287C - Preliminary Dual and Window 4ns High-Speed Comparators Typical Performance Curves Propagation Delay vs Overdrive V =5V IN STEP 7.8 7 7.4 7 6.8 6.6 6.4 0.2 0.6 1 1.4 1.8 V (V) OD Propagation Delay vs Supply Voltage 6.8 6.6 6 5.6 4 4.2 4.4 4.6 4.8 5 5.2 5.4 ±V (V) S Propagation Delay vs Overdrive V =1V IN STEP 6.1 6 5.9 5 5.7 5.6 5 5.4 5.3 5.2 50 100 150 200 250 300 ...

Page 5

... C (pF) LOAD Output with 50MHz Input V =1V IN P-P Output (5ns/div, 2V/div) Input (5ns/div, 0.5V/div) EL5287C - Preliminary Dual and Window 4ns High-Speed Comparators Package Power Dissipation vs Ambient Temp. JEDEC JESD51-3 Low Effective Thermal Conductivity Test Board 0.6 486mW 0.5 0.4 0.3 0.2 0 100 Output with 50MHz Input ...

Page 6

... EL5287C - Preliminary Dual and Window 4ns High-Speed Comparators Timing Diagram Compare Latch Enable Input Latch Differential Input Voltage V IN Comparator Output Definition of Terms Term V Input Offset Voltage - Voltage applied between the two input terminals to obtain CMOS logic threshold at the output OS V Input Voltage Pulse Amplitude - Usually set to 1V for comparator specifications ...

Page 7

... Negative supply voltage 6 GDN Digital ground 7 OUTL Low output 8 LATCH Latch 9 OUTH High output 10 VSD Digital supply voltage EL5287C - Preliminary Dual and Window 4ns High-Speed Comparators Function VREF (Reference Circuit 4) (Reference Circuit 4) (Reference Circuit 2) (Reference Circuit 3) (Reference Circuit 2) 7 Equivalent Circuit ...

Page 8

... With high overdrive voltages, the propagation delay does not change much with the input slew rate. Latch Pin Dynamics The EL5287C contains a “transparent” latch for each channel. The latch pin is designed to be driven with either a TTL or CMOS output. When the latch is con- ...

Page 9

... JA Window Detector the range of V < V < REFL IN puts go high and the input in range is high EL5287C - Preliminary Dual and Window 4ns High-Speed Comparators to ground of the range set low. V REFH REFL ...

Page 10

... EL5287C - Preliminary Dual and Window 4ns High-Speed Comparators General Disclaimer Specifications contained in this data sheet are in effect as of the publication date shown. Elantec, Inc. reserves the right to make changes in the cir- cuitry or specifications contained herein at any time without notice. Elantec, Inc. assumes no responsibility for the use of any circuits described herein and makes no representations that they are free from patent infringement ...

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