SY100EP11UKI Micrel Inc, SY100EP11UKI Datasheet - Page 8

• Manufacturer Part Number: SY100EP11UKI
• Description: IC BUFFER FANOUT 1:2 PECL 8MSOP
• Manufacturer: Micrel Inc
• Series: 100EP, ECL Pro™r
• Type: Fanout Buffer (Distribution)r

Specifications of SY100EP11UKI

• Number Of Circuits: 1
• Ratio - Input:output: 1:2
• Differential - Input:output: Yes/Yes
• Input: ECL, LVECL, LVPECL. PECL
• Output: ECL, LVECL, LVPECL. PECL
• Frequency - Max: 3GHz
• Voltage - Supply: 2.375 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Frequency-max: 3GHz
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Micrel, Inc.
Notes:
1. For +2.5V systems: R1 = 250Ω, R2 = 62.5Ω.
2. For +5.0V systems: R1 = 82Ω.
Notes:
1. Power-saving alternative to Thevenin termination.
2. Place termination resistors as close to destination inputs as possible.
3. R
M9999-111605
[e-mail] or [phone]
TERMINATION RECOMMENDATIONS
b
resistor sets the DC bias voltage equal to V
Figure 1. Parallel Termination–Thevenin Equivalent
+3.3V
R2 = 130Ω
Figure 2. Three-Resistor “Y–Termination”
t
. For +3.3V systems R
Z
Z
“source”
O
O
+5.0V or
= 50Ω
= 50Ω
+3.3V
R1
130Ω
R2
82Ω
b
= 46Ω to 50Ω. For +5V systems, R
Z = 50Ω
8
Z = 50Ω
+3.3V
50Ω
R1
130Ω
R2
82Ω
50Ω
R
V
+3.3V
50Ω
b
t
= V
“destination”
CC
+5.0V or
–2V
+3.3V
b
= 110Ω.
SY100EP11U
SY10EP11U
ECL Pro™