ICS85304AG-01LF IDT, Integrated Device Technology Inc, ICS85304AG-01LF Datasheet - Page 7

• Manufacturer Part Number: ICS85304AG-01LF
• Description: IC FANOUT BUFFER 1-5 20-TSSOP
• Manufacturer: IDT, Integrated Device Technology Inc
• Series: HiPerClockS™r
• Type: Fanout Buffer (Distribution), Multiplexerr

Specifications of ICS85304AG-01LF

• Number Of Circuits: 1
• Ratio - Input:output: 2:5
• Differential - Input:output: Yes/Yes
• Input: HCSL, LVDS, LVHSTL, LVPECL, SSTL
• Output: LVPECL
• Frequency - Max: 650MHz
• Voltage - Supply: 3.135 V ~ 3.465 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 20-TSSOP
• Frequency-max: 650MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 85304AG-01LF

Parameter Measurement Information, continued
Output Rise/Fall Time
Application Information
Wiring the Differential Input to Accept Single-Ended Levels
Figure 1 shows how the differential input can be wired to accept
single-ended levels. The reference voltage V_REF = V
generated by the bias resistors R1, R2 and C1. This bias circuit
should be located as close as possible to the input pin. The ratio of
R1 and R2 might need to be adjusted to position the V_REF in the
center of the input voltage swing. For example, if the input clock
swing is only 2.5V and V
R2/R1 = 0.609.
IDT™ / ICS™ 3.3V LVPECL FANOUT BUFFER
ICS85304-01
LOW SKEW, 1-TO-5 DIFFERENTIAL-TO- 3.3V LVPECL FANOUT BUFFER
nQ[0:4]
Q[0:4]
20%
80%
t
R
CC
= 3.3V, V_REF should be 1.25V and
80%
t
F
20%
CC
V
/2 is
SW I N G
7
Figure 1. Single-Ended Signal Driving Differential Input
Single Ended Clock Input
C1
0.1u
V_REF
ICS85304AG-01 REV. E JULY 8, 2008
R1
1K
R2
1K
V
CC
CLKx
nCLKx