2.5 GBIT 2 X 2 DUAL CROSSPOINT SWITCH
S3054
Input Structures
Two input structures exist in this part; TTL and High Speed, Differential Inputs. The LVTTL Inputs will interface with
any LVTTL outputs. The High Speed, Differential Inputs can be AC Coupled. Therefore, the High Speed, differen-
tial Input buffers are biased at Vcc -0.5V. Refer to Figure 6 for High Speed Differential Input termination.
Figure 6. Input Termination
Biased at Vcc -0.5V
S3054
100Ω
Figure 7. S3054 Output Termination
VCC
50Ω
50Ω
100 Ω
VSWx
Rext*
S3054
GND
VEEx
* Reduced Swing Amplitude
9
April 10, 2001 / Revision D