8543BGI IDT, Integrated Device Technology Inc, 8543BGI Datasheet - Page 3

• Manufacturer Part Number: 8543BGI
• Manufacturer: IDT, Integrated Device Technology Inc
• Type: Clock Driverr

Specifications of 8543BGI

• Number Of Clock Inputs: 2
• Mode Of Operation: Differential
• Output Frequency: 650MHz
• Output Logic Level: LVDS
• Operating Supply Voltage (min): 3.135V
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (max): 3.465V
• Package Type: TSSOP
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 20
• Lead Free Status / RoHS Status: Not Compliant

Function Tables
Table 3A. Control Input Function Table
After CLK_EN switches, the clock outputs are disabled or enabled following a rising and falling input clock edge as shown in Figure 1.
In the active mode, the state of the outputs are a function of the CLK/nCLK and PCLK/nPCLK inputs as described in Table 3B.
Figure 1. CLK_EN Timing Diagram
Table 3B. Clock Input Function Table
NOTE 1: Please refer to the Application Information section, Wiring the Differential Input to Accept Single-Ended Levels.
IDT™ / ICS™ LVDS FANOUT BUFFER
nCLK, nPCLK
ICS8543I
LOW SKEW, 1-TO-4, DIFFERENTIAL-TO-LVDS FANOUT BUFFER
CLK, PCLK
Biased; NOTE 1
Biased; NOTE 1
nQ0:nQ3
CLK or PCLK
CLK_EN
Q0:Q3
OE
0
1
1
1
1
0
1
0
1
Inputs
nCLK or nPCLK
Biased; NOTE 1
Biased; NOTE 1
CLK_EN
X
0
0
1
1
1
0
0
1
Inputs
Disabled
CLK_SEL
Q[0:3]
HIGH
HIGH
HIGH
LOW
LOW
LOW
X
0
1
0
1
Outputs
3
nQ[0:3]
HIGH
HIGH
HIGH
LOW
LOW
LOW
Selected Source
PCLK/nPCLK
PCLK/nPCLK
CLK/nCLK
CLK/nCLK
Single-Ended to Differential
Single-Ended to Differential
Single-Ended to Differential
Single-Ended to Differential
Differential to Differential
Differential to Differential
Input to Output Mode
Disabled; Low
Disabled; Low
Enabled
Enabled
ICS8543BGI REV. E SEPTEMBER 9, 2008
Q0:Q3
Hi-Z
Enabled
Outputs
Disabled; High
Disabled; High
Non-Inverting
Non-Inverting
Non-Inverting
Non-Inverting
nQ0:nQ3
Enabled
Enabled
Inverting
Inverting
Polarity
Hi-Z