sy55851a Micrel Semiconductor, sy55851a Datasheet - Page 5

• Manufacturer Part Number: sy55851a
• Description: 2.5v/3v, 3.0ghz Cml Anygate Any Logic With 50ohm Or 100ohm Outputs
• Manufacturer: Micrel Semiconductor

Micrel, Inc.
this family. All outputs are source terminated 100
CML differential drivers as shown in Figure 3. All inputs to
the SY55851/A must be externally terminated. SY55851/A
M9999-110705
[e-mail] or [phone]
CML TERMINATION AND TTL INTERFACE
All inputs accept the output from any other member of
SY55851
Figure 3c. Differentially Terminated SY55851
100
SY55851
100
V
CC
8mA
(100 Load CML Output)
(50 Load CML Output)
V
100
CC
Figure 3a. SY55851
8mA
100
/Q
Q
/Q
Q
100
V
CC
100
100
100
50
50
200
100
or 50
5
inputs are designed to accept a termination resistor between
the true and complement inputs of a differential pair. 0402
form factor chip resistors will fit with some trace fanout.
Figure 3b. Differentially Terminated SY55851A
Figure 4. Interfacing TTL-to-CML Select Inputs
SY55851A
50
TTL
Driver
V
CC
V
CC
16mA
(50 Load CML Output)
50
1k
V
/Q
CC
Q
1k
V
CC
549
1.47k
V
CC
S
/S
V
50
50
SY55851A
CC
SY55851
(TTL Driver)
SuperLite™
SY55851A
100
SY55851