鈩?/div>
input pull-down resistors
s
Available in 8-pin SOIC package
DESCRIPTION
The SY10EL89 is a differential fanout gate specifically
designed to drive coaxial cables. The device is especially
useful in Digital Video Broadcast applications. For this
application, since the system is polarity-free, each output
of the device can be used as an independent driver.
The driver boasts a voltage gain of approximately 40
and produces output swings twice as large as a standard
ECL output. When driving a coaxial cable, proper
termination is required at both ends of the line to minimize
signal loss. The 1.6V output swings allow for termination
at both ends of the cable while maintaining the required
800mV swing at the receiving end of the cable. Because
of the larger output swings, the device cannot be
terminated into the standard 鈥?.0V. All of the DC
parameters are tested with a 50鈩?to 鈥?.0V load. The
driver accepts a standard differential ECL input and can
run off the Digital Video Broadcast standard 鈥?.0V supply.
PIN CONFIGURATION/BLOCK DIAGRAM
Q
0
Q
0
Q
1
Q
1
1
2
3
4
8
7
6
5
V
CC
D
D
PIN NAMES
V
EE
Pin
D
SOIC
TOP VIEW
Q
0
, Q
1
Data Inputs
Data Outputs
Function
Rev.: E
Amendment: /0
1
Issue Date: August, 1998