MC100EP016AFAR2 ON Semiconductor, MC100EP016AFAR2 Datasheet - Page 10

• Manufacturer Part Number: MC100EP016AFAR2
• Description: IC COUNTER 8BIT SYNC ECL 32LQFP
• Manufacturer: ON Semiconductor
• Series: 100EPr

Specifications of MC100EP016AFAR2

• Logic Type: Binary Counter
• Direction: Up
• Number Of Elements: 1
• Number Of Bits Per Element: 8
• Reset: Asynchronous
• Timing: Synchronous
• Count Rate: 1.4GHz
• Trigger Type: Positive, Negative
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 32-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: MC100EP016AFAOSCT

chain. Once again to maximize the frequency of operation
EP01 OR gates were used. For lower frequency applications
a slower OR gate could replace the EP01. Note that for a
16‐bit divider the OR function feeding the PE (program
enable) input CANNOT be replaced by a wire OR tie as the
TC output of the least significant EP016A must also feed the
CE input of the most significant EP016A. If the two TC
outputs were OR tied the cascaded count operation would
not operate properly. Because in the cascaded form the PE
feedback is external and requires external gating, the
maximum frequency of operation will be significantly less
than the same operation in a single device.
CLK
CLK
Figure 7 shows a typical block diagram of a 32‐bit divider
LO
CLK
CLK
CE
Q0 to Q7
Q0 to Q7
P0 to P7
EP016
LSB
TC
(See Application Note AND8020/D - Termination of ECL Logic Devices.)
PE
Figure 8. Typical Termination for Output Driver and Device Evaluation
Driver
Device
EP01
Figure 7. 32‐Bit Cascaded EP016A Programmable Divider
APPLICATIONS INFORMATION (continued)
Q
Q
CLK
CLK
CE
P0 to P7
Q0 to Q7
EP016
TC
PE
Z
Z
http://onsemi.com
MC100EP016A
o
o
= 50 W
= 50 W
EP01
50 W
10
V
TT
= V
Maximizing EP016A Count Frequency
ended outputs, thus V
situations where all of the outputs switch simultaneously in
the same direction. This V
the maximum frequency of operation of the device. Since
the device does not need to have the Q outputs terminated to
count properly, it is recommended that if the outputs are not
going to be used in the rest of the system they should be left
unterminated. In addition, if only a subset of the Q outputs
are used in the system only those outputs should be
terminated. Not terminating the unused outputs will not only
cut down the V
system power dissipation. Following these guidelines will
allow designers to either be more aggressive in their designs
or provide them with an extra margin to the published data
book specifications.
The EP016A device produces 9 fast transitioning single
V
CC
TT
- 2.0 V
50 W
CLK
CLK
CE
Q0 to Q7
P0 to P7
EP016
CC
TC
PE
noise generated but will also save in total
D
D
CC
noise can become significant in
CC
Receiver
Device
EP01
noise can negatively impact
CLK
CLK
CE
Q0 to Q7
P0 to P7
EP016
MSB
TC
PE