Maxim MAX912C-D, MAX912CPE, MAX913ESA, MAX913MJA, MAX912MJE Datasheet
...
19-0157; Rev 1; 1/94
Single/Dual, Ultra-Fast, Low-Power,
Precision TTL Comparators
_______________General Description
The MAX913 single and MAX912 dual high-speed,
low-power comparators have differential inputs and
complementary TTL outputs. Fast propagation delay
(10ns typ), extremely low supply current, and a wide
common-mode input range that includes the negative
rail make the MAX912/MAX913 ideal for low-power,
high-speed, single +5V (or ±5V) applications such as
V/F converters or switching regulators.
The MAX912/MAX913 outputs remain stable through
the linear region. This feature eliminates output instability
common to high-speed comparators when driven with a
slow-moving input signal.
The MAX912/MAX913 can be powered from a single
+5V supply or a ±5V split supply. The MAX913 is an
improved plug-in replacement for the LT1016. It provides significantly wider input voltage range and equiva-
lent speed at a fraction of the power. The MAX912 dual
comparator has equal performance to the MAX913 and
includes independent latch controls.
________________________Applications
Zero-Crossing Detectors
Ethernet Line Receivers
Switching Regulators
High-Speed Sampling Circuits
High-Speed Triggers
Extended Range V/F Converters
Fast Pulse Width/Height Discriminators
____________________________Features
♦ Ultra Fast (10ns)
♦ Single +5V or Dual ±5V Supply Operation
♦ Input Range Extends Below Negative Supply
♦ Low Power: 6mA (+5V) Per Comparator
♦ No Minimum Input Signal Slew-Rate Requirement
♦ No Power-Supply Current Spiking
♦ Stable in the Linear Region
♦ Inputs Can Exceed Either Supply
♦ Low Offset Voltage: 0.8mV
______________Ordering Information
PART TEMP. RANGE PIN-PACKAGE
MAX912CPE
MAX912CSE 0°C to +70°C 16 Narrow SO
MAX912C/D 0°C to +70°C Dice*
MAX912EPE -40°C to +85°C 16 Plastic DIP
MAX912ESE -40°C to +85°C 16 Narrow SO
MAX912MJE -55°C to +125°C 16 CERDIP
MAX913CPA
MAX913CSA 0°C to +70°C 8 SO
MAX913C/D 0°C to +70°C Dice*
MAX913EPA -40°C to +85°C 8 Plastic DIP
MAX913ESA -40°C to +85°C 8 SO
MAX913MJA -55°C to +125°C 8 CERDIP
* Dice are specified at TA= +25°C, DC parameters only.
0°C to +70°C 16 Plastic DIP
0°C to +70°C 8 Plastic DIP
MAX912/MAX913
___________________________________________________________Pin Configurations
TOP VIEW
1
V+
2
IN+
IN-
V-
+
-
3
4
MAX913
8
Q
7
Q
6
GND
5
LE
DIP/SO
________________________________________________________________
116QA
QA QB
GND
LEA
N.C.
V-
INA-
MAX912
2
3
4
5
AB
+
-
6
7
89INA+ INB+
15
14
13
12
-
+
11
10
DIP/Narrow SO
Maxim Integrated Products
QB
GND
LEB
N.C.
V+
INB-
1
Call toll free 1-800-998-8800 for free samples or literature.
Single/Dual, Ultra-Fast, Low-Power,
Precision TTL Comparators
ABSOLUTE MAXIMUM RATINGS
Positive Supply Voltage............................................................7V
Negative Supply Voltage ........................................................-7V
Differential Input Voltage .....................................................±15V
Input Voltage (Referred to V-)..................................- 0.3V to 15V
Latch Pin Voltage.............................................Equal to Supplies
Continuous Output Current...............................................±20mA
Continuous Power Dissipation (TA= +70°C)
8-Pin Plastic DIP (derate 9.09mW/°C above +70°C)...727mW
8-Pin SO (derate 5.88mW/°C above +70°C)................471mW
8-Pin CERDIP (derate 8.00mW/°C above +70°C)........640mW
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
MAX912/MAX913
(V+ = +5V, V- = -5V, VQ= 1.4V, VLE= 0V, TA= T
PARAMETER
Input Offset Voltage (Note 1) V
Offset Drift TCV
Input Offset Current (Note 1) I
Input Bias Current I
Input Voltage Range V
Common-Mode Rejection Ratio CMRR
Power-Supply Rejection Ratio PSRR
Small-Signal Voltage Gain A
Output Voltage
Positive Supply Current Per
Comparator
Negative Supply Current Per
Comparator
Latch-Pin High Input Voltage V
Latch-Pin Low Input Voltage V
Latch-Pin Current I
SYMBOL MIN TYP MAX
OS
OS
OS
B
CM
V
V
OH
V
OL
I+
I- 0.4 2 mA
IH
IL
IL
to T
MIN
MAX
RS≤ 100Ω
C, E temp. ranges 8
M temp. range 10
C, E temp. ranges
M temp. range
Single +5V
-5.0V ≤ VCM≤ +3.5V
Positive supply: 4.5V ≤ V+ ≤ 5.5V 60 85
Negative supply: -2V ≥ V- ≥ -7V
1V ≤ VQ≤ 2V, TA= +25°C 1500 3500 V/V
V+ ≥ 4.5V
I
= 4mA 0.3 0.5
SINK
TA= +25°C, I
C, E temp. ranges 610
M temp. range 12
VLE= 0V
16-Pin Plastic DIP (derate 10.53mW/°C above +70°C)...842mW
16-Pin Narrow SO (derate 8.70mW/°C above +70°C) ...696mW
16-Pin CERDIP (derate 10.00mW/°C above +70°C)....800mW
Operating Temperature Ranges:
MAX91_ C_ _ ......................................................0°C to +70°C
MAX91_ E_ _....................................................-40°C to +85°C
MAX91_ MJ_ .................................................-55°C to +125°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10sec).............................+300°C
, unless otherwise noted. Typical values are at TA= +25°C.)
CONDITIONS
TA= +25°C
TA= T
TA= +25°C
TA= T
TA= +25°C
C, E temp. ranges
M temp. range
I
OUT
I
OUT
= 10mA 0.4
SINK
MIN
MIN
= 1mA
= 10mA
to T
to T
MAX
MAX
-5.2 +3.5
-5.0 +3.5
-0.2 +3.5
0.8 2
3
2 µV/°C
0.3 0.5
0.8
35
0 +3.5
80 110
80 100
2.7 3.4
2.4 3.0
12
2.0 V
0.8 V
-20 µA
UNITS
mV
µA
µA
V
dB
dB
V
mA
2 _______________________________________________________________________________________
Single/Dual, Ultra-Fast, Low-Power,
Precision TTL Comparators
ELECTRICAL CHARACTERISTICS (continued)
(V+ = +5V, V- = -5V, VQ= 1.4V, VLE= 0V, TA= T
PARAMETER SYMBOL UNITSMIN TYP MAX
Propagation Delay (Note 2) t
Differential Propagation Delay
(Note 2)
PD+
, t
PD-
∆t
PD
Channel-to-Channel
Propagation Delay
(Note 2)
Latch Setup Time (Note 3) ns
Latch Hold Time (Note 3) ns
Latch Propagation Delay (Note 4) ns
SU
H
LPD
Note 1: Input Offset Voltage (VOS) is defined as the average of the two input offset voltages, measured by forcing first one output,
then the other to 1.4V. Input Offset Current (I
Note 2: Propagation Delay (tPD) and Differential Propagation Delay (∆tPD) cannot be measured in automatic handling equipment
with low input overdrive values. The MAX912/MAX913 are sample tested to 0.1% AQL with a 1V step and 500mV overdrive
at +25°C only. Correlation tests show that t
formed to guarantee that all internal bias conditions are correct. For low overdrive conditions, VOSis added to the overdrive. Differential Propagation Delay is defined as: ∆tPD= t
Note 3: Input latch setup time (tSU) is the interval in which the input signal must be stable prior to asserting the latch signal.
The hold time (t
guaranteed by design.
Note 4: Latch Propagation Delay (t
See Timing Diagram.
) is the interval after the latch is asserted in which the input signal must be stable. These parameters are
H
) is the delay time for the output to respond when the latch-enable pin is deasserted.
LPD
to T
MIN
, unless otherwise noted).
MAX
CONDITIONS
∆VIN= 100mV,
VOD= 5mV
∆VIN= 100mV,
VOD= 20mV
∆VIN= 100mV,
VOD= 5mV
∆VIN= 100mV,
VOD= 5mV
(MAX912 only)
) is defined the same way.
OS
and ∆t
PD
can be guaranteed with this test, if additional DC tests are per-
PD
T
A
TA= T
TA = +25°C
TA= T
TA=
+25°C
TA= +25°C
– tPD-.
PD+
= +25°C
MIN
MIN
to T
MAX
to T
MAX
MAX913
10 14
912
23
35MAX912
500 ps
20t
32t
7t
16
ns
15
ns
MAX912/MAX913
__________________________________________Typical Operating Characteristics
(V+ = 5V, V- = -5V, VLE= 0V, CL= 15pF, TA = +25°C, unless otherwise noted.)
PROPAGATION DELAY
10
9
8
7
PROPAGATION DELAY (ns)
6
5
vs. INPUT OVERDRIVE
VOD = 10mV
t
PD(-)
t
PD(+)
1 10 100
INPUT OVERDRIVE (mV)
_______________________________________________________________________________________ 3
PROPAGATION DELAY
vs. SOURCE RESISTANCE
50
MAX912-01
VOD = 10mV
40
30
20
PROPAGATION DEALY (ns)
10
0
1 100 10,000
10 1000
SOURCE RESISTANCE (Ω)
11
MAX912-02
10
9
t
PD(-)
t
PD(+)
8
PROPAGATION DELAY (ns)
7
6
PROPAGATION DELAY
vs. LOAD CAPACITANCE
VOD = 10mV
t
PD(-)
t
PD(+)
10 20 30 40 50
LOAD CAPACITANCE (pF)
MAX912-03
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