87946AYI-147LF IDT, Integrated Device Technology Inc, 87946AYI-147LF Datasheet - Page 10
![](/photos/31/26/312699/32pin_lqfp_sml.jpg)
87946AYI-147LF
Manufacturer Part Number
87946AYI-147LF
Description
Manufacturer
IDT, Integrated Device Technology Inc
Type
Clock Dividerr
Datasheet
1.87946AYI-147LF.pdf
(14 pages)
Specifications of 87946AYI-147LF
Number Of Clock Inputs
2
Mode Of Operation
Single-Ended
Output Frequency
250MHz
Output Logic Level
LVCMOS/LVTTL
Operating Supply Voltage (min)
3V
Operating Supply Voltage (typ)
3.3V
Operating Supply Voltage (max)
3.6V
Package Type
LQFP
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Signal Type
LVCMOS/LVTTL
Mounting
Surface Mount
Pin Count
32
Lead Free Status / RoHS Status
Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
ICS87946I-147 Data Sheet
Application Information
Recommendations for Unused Input and Output Pins
Inputs:
LVCMOS Control Pins
All control pins have internal pulldowns; additional resistance is not
required but can be added for additional protection. A 1kΩ resistor
can be used.
CLK Inputs
For applications not requiring the use of a clock input, it can be left
floating. Though not required, but for additional protection, a 1kΩ
resistor can be tied from the CLK input to ground.
Reliability Information
Table 6.
Transistor Count
The transistor count for ICS87946I-147 is: 1204
Pin compatible to the MPC9446 and MPC946
ICS87946AYI-147 REVISION A AUGUST 7, 2009
Linear Feet per Minute
Single-Layer PCB, JEDEC Standard Test Boards
Multi-Layer PCB, JEDEC Standard Test Boards
NOTE: Most modern PCB designs use multi-layered boards. The data in the second row pertains to most designs.
θ
JA
vs. Air Flow Table for a 32 Lead LQFP
θ
JA
67.8°C/W
47.9°C/W
vs. Air Flow
10
0
O
LVCMOS Outputs
All unused LVCMOS output can be left floating. There should be no
trace attached.
UT
puts:
LOW SKEW, ÷1, ÷2 LVCMOS/LVTTL CLOCK GENERATOR
55.9°C/W
42.1°C/W
200
©2009 Integrated Device Technology, Inc.
50.1°C/W
39.4°C/W
500