19-2398; Rev 1; 7/93
Ult ra -Fa s t ECL-Ou t p u t Co m p a ra t o r
w it h La t c h En a b le
MAX9685
_______________Ge n e ra l De s c rip t io n
The MAX9685 is an ultra-fast ECL comparator manufac-
____________________________Fe a t u re s
♦ 1.3ns Propagation Delay
tured with a high-frequency bipolar process (f = 6GHz)
T
♦ 0.5ns Latch Setup Time
capable of very short propagation delays. This design
maintains the excellent DC matching characteristics nor-
mally found only in slower comparators.
♦ +5V, -5.2V Power Supplies
♦ Pin-Compatible with AD9685, Am6685
The device is pin-compatible with the AD9685 and
Am6685, but exceeds their AC characteristics.
♦ Available in Commercial, Extended-Industrial,
The MAX9685 has differential inputs and complemen-
tary outputs that are fully compatible with ECL-logic lev-
els. Output current levels are capable of driving 50Ω
terminated transmission lines. The ultra-fast operation
makes signal processing possible at frequencies in
excess of 600MHz.
and Military Temperature Ranges
♦ Available in Narrow SO Package
A latch-enable (LE) function is provided to allow the
comparator to be used in a sample-hold mode. When
LE is ECL high, the comparator functions normally.
When LE is driven ECL low, the outputs are forced to an
unambiguous ECL-logic state, dependent on the input
conditions at the time of the latch input transition. If the
latch-enable function is not used, the LE pin must be
connected to ground.
______________Ord e rin g In fo rm a t io n
PART
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
-55°C to +125°C
PIN-PACKAGE*
16 Plastic DIP
16 Narrow SO
16 CERDIP
MAX9685CPE
MAX9685CSE
MAX9685CJE
MAX9685CTW
MAX9685C/D
MAX9685EPE
MAX9685ESE
MAX9685MJE
MAX9685MTW
10 TO-100
Dice**
________________________Ap p lic a t io n s
High-Speed A/D Converters
High-Speed Line Receivers
Peak Detectors
16 Plastic DIP
16 Narrow SO
16 CERDIP
10 TO-100
Threshold Detectors
*
Contact factory for availability of 20-pin PLCC.
** Contact factory for dice specifications.
High-Speed Triggers
__________________________________________________________P in Co n fig u ra t io n s
TOP VIEW
GND1
GND1
V+
1
2
3
4
5
6
7
8
16 GND2
15 N.C.
V+
GND2
10
MAX9685
1
4
9
6
IN+
IN-
14 N.C.
IN+
IN-
Q OUT
Q OUT
2
3
8
7
13 N.C.
N.C.
LE
12 Q OUT
11 Q OUT
10 N.C.
N.C.
V-
5
LE
N.C.
9
N.C.
V-
TO-100
DIP/SO
________________________________________________________________ Maxim Integrated Products
1
Ca ll t o ll fre e 1 -8 0 0 -9 9 8 -8 8 0 0 fo r fre e s a m p le s o r lit e ra t u re .