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Número de pieza | EL2252CM | |
Descripción | Dual 50 MHz Comparator/Pin Receiver | |
Fabricantes | Elantec Semiconductor | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de EL2252CM (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
No Preview Available ! EL2252C
Dual 50 MHz Comparator Pin Receiver
Features
Fast response 7 ns
Inputs tolerate large overdrives
with no speed nor bias current
penalties
Propagation delay is relatively
constant with variations of input
Slew Rate overdrive
temperature and supply voltage
Output provides proper CMOS or
TTL logic levels
Hysteresis is available on-chip
Large voltage gain 8000 V V
Not oscillation-prone
Can detect 4 ns glitches
MIL-STD-883 Rev C compliant
Applications
Pin receiver for automatic test
equipment
Data communications line
receiver
Frequency counter input
Pulse squarer
Ordering Information
Part No
EL2252CN
EL2252CM
Temp Range
0 C to a75 C
0 C to a75 C
Package
14-Pin P-DIP
20-Lead SOL
Outline
MDP0031
MDP0027
General Description
The EL2252 dual comparator replaces the traditional input
buffer a attenuator aECL comparator aECL to TTL transla-
tor circuit blocks used in digital equipment The EL2252 pro-
vides a quick 7 ns propagation delay while complying with
g10V inputs Input accuracy and propagation delay is main-
tained even with input signal Slew Rates as great as 4000 V ms
The EL2252 can run on supplies as low as b5 2V and a9V and
comply with ECL and CMOS inputs or use supplies as great as
g18V for much greater input range
The EL2252 has a TTL pin which when grounded restricts
the output VOH to a TTL swing to minimize propagation delay
When left open the output VOH increases to a valid CMOS
level
The comparators are well behaved and have little tendency to
oscillate over a variety of input and output source and load
impedances They do not oscillate even when the inputs are
held in the linear range of the device To improve output stabili-
ty in the presence of input noise an internal 60 mV of hystere-
sis is available by connecting the HYS pin to Vb
Elantec’s products and facilities comply with MIL-I-45208A
and other applicable quality specifications For information on
Elantec’s processing see Elantec document QRA-1 ‘‘Elantec’s
Processing Monolithic Integrated Circuits’’
Connection Diagrams
14-Pin DIP
20-Pin SOL
Top View
2252 – 1
Top View
2252 – 2
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 Patent pending
1995 Elantec Inc
1 page EL2252C
Dual 50 MHz Comparator Pin Receiver
Typical Performance Curves
Input Bias Current
vs Small Overdrives
Input Bias Current
vs Large Overdrives
Bias Current vs
Temperature Inputs Balanced
Input Hysteresis Voltage
vs Temperature
Input Output Transfer
Function HYS Open
Input Output Transfer
Function HYS Connected to V
2252 – 5
2252 – 6
5
2252 – 7
5 Page EL2252C
Dual 50 MHz Comparator Pin Receiver
EL2252C Macromodel
Connections
subckt M2252
ainput
l binput
l l aV
l l l bV
l l l l HYS
l l l l l TTL
l l l l l l output
l l l l l ll
2 3 14 7 4 5 13
Application Hints
Connect pin 4 to ground through 1000 MX resistor to inhibit
Hysteresis to invoke Hysteresis connect pin 4 to Vb
Connect pin 5 to ground to invoke TTL VOH pin 5 may left open
for CMOS VOH
To facilitate OP set itl1e200 itl2e200 set node 27 to 13 8V
and node 30 to b12V
Input Stage
i1 22 7 1 7mA
r1 14 20 300
r2 14 21 300
q1 20 2 22 qn
q2 21 3 22 qn
q3 20 26 23 qn
q4 21 25 23 qn
q13 25 27 20 qp
q14 26 27 21 qp
v1 14 27 1 2V
r3 23 24 1 4k
d1 24 4 ds
r4 25 33 700
r5 26 33 700
q16 33 33 34 qn
q17 34 34 37 qn
v4 37 7 1 2V
2nd Stage
i2 30 7 3mA
i3 14 28 1 5mA
q7 0 35 28 qp
v2 44 0 1 2V
s1 44 35 5 0 swa
s2 45 35 5 0 swb
rsw 14 5 10k
11
11 Page |
Páginas | Total 12 Páginas | |
PDF Descargar | [ Datasheet EL2252CM.PDF ] |
Número de pieza | Descripción | Fabricantes |
EL2252C | Dual 50 MHz Comparator/Pin Receiver | Elantec Semiconductor |
EL2252CM | Dual 50 MHz Comparator/Pin Receiver | Elantec Semiconductor |
EL2252CN | Dual 50 MHz Comparator/Pin Receiver | Elantec Semiconductor |
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