HFA-0003,
HFA-0003L
Semiconductor
Ultra High Speed Comparator
September 1998
Features
Description
• Low Propagation Delay (0003/0003L) . . . . . . . . . . 2.0/2.1ns
• Low Latch Set Up Time . . . . . . . . . . . . . . . . . . . . . . . . 0.8ns
• Low Offset Voltage, Drift Coefficient . . . . . 1.0mV, 4µV/ C
• Wide Common Mode Range . . . . . . . . . . . . . . . . +5.2/-2.8V
• Low Power Dissipation . . . . . . . . . . . . . . . . . . . . . . 200mW
• Large Differential Input Resistance . . . . . . . . . . . . . . .1MΩ
• Complementary ECL Outputs; 50Ω Driving Capability
• Resistor Programmable Hysteresis with HFA-0003L
• Pin Compatible with MAX9690/9685 and AD96685
• Available in SOIC
The HFA-0003/0003L are monolithic, ultra high speed,
voltage comparators. These comparators combine a
low input offset voltage (1.0mV) with a low propagation
delay (2.0ns) to achieve a large dynamic input range.
The low offset voltage also makes these comparators
ideally suited for high speed, precision analog-to-
digital processing applications. The circuits have
differential analog inputs, and provide complementary,
ECL compatible (10K and 100K) logic outputs. The
outputs are capable of supplying the current required
by terminated 50Ω transmission lines. Both outputs
are open emitter structures, requiring external pull-
down resistors. The recommended circuit is 50Ω
connected to -2.0V, but any equivalent ECL
termination circuit may be used.
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Applications
• Window Detector
• High Speed Peak Detector
• High Speed Threshold Detector
• High Speed Data Acquisition Systems
• Fiber Optic Decision Circuits
• High Speed Phase Detector
• Frequency Counter
The HFA-0003L is a latched version of the HFA-0003.
The latch function allows the HFA-0003L to operate in
sample-hold or track-hold modes, when synchronous
detection is required. The Latch Enable (LE) input can
be driven by a standard ECL gate. See the Applica-
tions section for more information on this feature.
Part Number Information
PART
NUMBER
TEMPERATURE
RANGE
PACKAGE
The HFA-0003L also has an additional feature, user
programmable hysteresis. By connecting a resistor
from the HYS pin to GND the user can select up to
20mV of input hysteresis. See the Applications section
for more information on this feature.
o
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HFA1-0003L-5
HFA1-0003L-9
HFA2-0003L-5
HFA2-0003L-9
HFA3-0003-5
HFA3-0003-9
HFA3-0003L-5
HFA3-0003L-9
HFA7-0003-5
HFA7-0003-9
HFA9P0003-5
HFA9P0003L-5
HFA9P0003L-9
0 C to +75 C
16 Lead Ceramic Sidebraze DIP
o
o
-40 C to +85 C 16 Lead Ceramic Sidebraze DIP
o
o
0 C to +75 C
10 Pin CAN
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o
-40 C to +85 C 10 Pin CAN
The HFA-0003 is pin compatible with the MAX9690,
and SP9680 while providing improved performance.
The HFA-0003L is pin compatible with the MAX9685,
AD96685, SP9685, HCMP96850, and the VC7695
while providing improved performance.
o
o
0 C to +75 C
8 Lead Plastic DIP
o
o
-40 C to +85 C 8 Lead Plastic DIP
o
o
0 C to +75 C
16 Lead Plastic DIP
o
o
-40 C to +85 C 16 Lead Plastic DIP
o
o
0 C to +75 C
8 Lead Ceramic Sidebraze DIP
o
o
-40 C to +85 C 8 Lead Ceramic Sidebraze DIP
o
o
0 C to +75 C
8 Lead SOIC
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o
0 C to +75 C
16 Lead Narrow Body SOIC
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-40 C to +85 C 16 Lead Narrow Body SOIC
Pinouts
HFA-0003 (PDIP, CDIP, SOIC)
TOP VIEW
HFA-0003L (PDIP, CDIP, 150 mil SOIC)
HFA-0003L (TO-100 CAN)
TOP VIEW
TOP VIEW
GND1
GND1
GND 2
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
(DIGITAL)
V+
+IN
-IN
V-
1
2
3
4
8
7
6
5
GND 1 (DIGITAL)
GND 2 (ANALOG)
Q OUT
(DIGITAL)
(ANALOG)
NC
V+
10
GND 2
+
V+
1
9
(ANALOG)
NC
+IN
+
NC
+IN
-IN
+
Q OUT
Q OUT
2
3
8
-IN
NC
Q OUT
Q OUT
Q OUT
NC
7
LE
NC
V-
4
6
HYS
LE
5
V-
HYS
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
File Number 2749.5
Copyright © Harris Corporation 1997
3-33