85211AMI-01 IDT, Integrated Device Technology Inc, 85211AMI-01 Datasheet - Page 6

• Manufacturer Part Number: 85211AMI-01
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of 85211AMI-01

• Number Of Outputs: 4
• Operating Supply Voltage (max): 3.465V
• Operating Temp Range: -40C to 85C
• Propagation Delay Time: 1ns
• Operating Supply Voltage (min): 3.135V
• Mounting: Surface Mount
• Pin Count: 8
• Operating Supply Voltage (typ): 3.3V
• Package Type: SOIC N
• Duty Cycle: 52%
• Operating Temperature Classification: Industrial
• Lead Free Status / Rohs Status: Not Compliant

W
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
S
Figure 2 shows a schematic example of ICS85211I-01. In this
example, the input is driven by an ICS HiPerClockS HSTL driver.
The decoupling capacitors should be physically located near
85211AMI-01
CHEMATIC
IRING THE
1.8V
LVHSTL
ICS
HiPerClockS
LVHSTL Driv er
E
D
XAMPLE
IFFERENTIAL
Zo = 50 Ohm
Zo = 50 Ohm
R6
50
F
I
F
NPUT TO
IGURE
IGURE
Single Ended Clock Input
1. S
2. ICS85211I-01 HSTL B
R5
50
A
A
PPLICATION
CCEPT
INGLE
VDD=3.3V
5
6
7
8
U1
GND
nCLK
CLK
VDD
E
C1
0.1u
NDED
S
V_REF
C1
0.1u
INGLE
DD
www.idt.com
/2 is
ICS85211-01
S
IGNAL
E
6
I
NDED
NFORMATION
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
and R2/R1 = 0.609.
the power pin. For ICS85211I-01, the unused outputs
need to be terminated.
1K
D
nQ1
nQ0
R1
1K
R2
Q1
Q0
RIVING
UFFER
D
VDD
L
4
3
2
1
IFFERENTIAL
EVELS
CLK
nCLK
S
D
CHEMATIC
IFFERENTIAL
R3
50
Zo = 50 Ohm
Zo = 50 Ohm
E
-
XAMPLE
TO
I
NPUT
R4
50
-HSTL F
Unused
Output
Need To
Be
Terminated
DD
R1
50
= 3.3V, V_REF should be 1.25V
ICS85211I-01
L
OW
ANOUT
R2
50
S
KEW
REV. B AUGUST 4, 2010
-
+
LVHSTL Input
, 1-
B
UFFER
TO
-2