SY89874UMG Micrel Inc, SY89874UMG Datasheet - Page 9

• Manufacturer Part Number: SY89874UMG
• Description: IC CLK DVDR ANYDIFF-LVPECL 16MLF
• Manufacturer: Micrel Inc
• Series: Precision Edge®r
• Type: Fanout Buffer (Distribution), Dividerr

Specifications of SY89874UMG

• Number Of Circuits: 1
• Ratio - Input:output: 1:2
• Differential - Input:output: Yes/Yes
• Input: CML, HSTL, LVDS, LVPECL
• Output: LVPECL
• Frequency - Max: 2.5GHz
• Voltage - Supply: 2.375 V ~ 3.63 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-MLF®, QFN
• Frequency-max: 2.5GHz
• Clock Ic Type: Clock Driver / Fanout Buffer
• Frequency: 2.5GHz
• No. Of Outputs: 2
• No. Of Multipliers / Dividers: 4
• Supply Current: 50mA
• Supply Voltage Range: 2.375V To 3.63V
• Digital Ic Case: RoHS Compliant
• Function: Clock Divider
• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Package Type: MLF
• Pin Count: 16
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 576-1437

Note 1.
Note 1.
Note 2.
Note 3.
Note 4.
Note 1.
Note 2.
M9999-031208
[e-mail] or [phone]
Micrel, Inc.
LVPECL OUTPUT TERMINATION RECOMMENDATIONS
For +2.5V systems: R1 = 250 , R2 = 62.5
Power-saving alternative to Thevenin termination.
Place termination resistors as close to destination inputs as possible.
R
C1 is an optional bypass capacitor intended to compensate for any t
Unused output (/Q) must be terminated to balance the output.
For +2.5V systems: R1 = 250 , R2 = 62.5 , R3 = 1.25k , R4 = 1.2k .
b
resistor sets the DC bias voltage, equal to V
Figure 4a. Parallel Termination–Thevenin Equivalent
+3.3V
+3.3V
Figure 4b. Three-Resistor “Y–Termination”
“source”
/Q
Q
+3.3V
+3.3V
Figure 4d. Terminating Unused I/O
R1
130
R2
82
t
V
. For +3.3V systems R
t
Z
Z
= V
O
O
= 50
= 50
CC
Z
Z = 50
Z = 50
O
—2V
= 50
R1
130
R2
82
50
+3.3V
9
50
R1
130
R2
82
r
/t
+3.3V
f
b
mismatches.
= 46 to 50 . For +2.5V systems R
R b
50
R3
1k
R1
130
R2
82
R4
1.6k
“destination”
V
(Optional)
C1
0.01 F
t
= V
V
+3.3V
t
+3.3V
= V
CC
+3.3V
—1.3V
CC
—2V
b
= 39
Precision Edge
SY89874U
®