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ICS8312 Datasheet

1-TO-12 LVCMOS/LVTTL FANOUT BUFFER

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ICS8312 pdf
LOW SKEW, 1-TO-12 LVCMOS/LVTTL
FANOUT BUFFER
General Description
The ICS8312 is a low skew, 1-to-12 LVCMOS/
ICS LVTTL Fanout Buffer and a member of the
HiPerClockS™ HiPerClockS™ family of High Performance Clock
Solutions from IDT. The ICS8312 single-ended clock
input accepts LVCMOS or LVTTL input levels. The
low impedance LVCMOS outputs are designed to drive 50series
or parallel terminated transmission lines. The effective fanout can
be increased from 12 to 24 by utilizing the ability of the outputs to
drive two series terminated lines.
The ICS8312 is characterized at full 3.3V, 2.5V, and 1.8V, mixed
3.3V/2.5V, 3.3V/1.8V and 2.5V/1.8V output operating supply
modes. Guaranteed output and part-to-part skew characteristics
along with the 1.8V output capabilities makes the ICS8312 ideal
for high performance, single ended applications that also require a
limited output voltage.
ICS8312
Features
Twelve LVCMOS/LVTTL outputs
CLK input supports the following input types: LVCMOS, LVTTL
Maximum output frequency: 250MHz
Output skew: 150ps (maximum)
Supply modes:
Core/Output
3.3V/3.3V
3.3V/2.5V
3.3V/1.8V
2.5V/2.5V
2.5V/1.8V
1.8V/1.8V
0°C to 85°C ambient operating temperature
Available in both standard (RoHS 5) and lead-free (RoHS 6)
packages
Block Diagram
CLK_EN Pullup
D
Q
LE
CLK Pulldown
OE Pullup
12
Q[0:11]
IDT™ / ICS™ LVCMOS/LVTTL FANOUT BUFFER
1
Pin Assignment
GND
VDD
CLK_EN
CLK
GND
OE
VDD
GND
32 31 30 29 28 27 26 25
1 24
2 23
3 22
4 21
5 20
6 19
7 18
8 17
9 10 11 12 13 14 15 16
Q4
VDDO
Q5
GND
Q6
VDDO
Q7
GND
ICS8312
32-Lead LQFP
7mm x 7mm x 1.4mm package body
Y Package
Top View
ICS8312AY REV. D JULY 3, 2008


Integrated Device Technology Electronic Components Datasheet

ICS8312 Datasheet

1-TO-12 LVCMOS/LVTTL FANOUT BUFFER

No Preview Available !

ICS8312 pdf
ICS8312
LOW SKEW, 1-TO-12 LVCMOS/LVTTL FANOUT BUFFER
Table 1. Pin Descriptions
Number
1, 5, 8, 12, 16,
17, 21, 25, 29
2, 7
3
Name
GND
VDD
CLK_EN
4 CLK
6 OE
9, 11, 13, 15,
18, 20, 22, 24,
26, 28, 30, 32
10, 14, 19, 23,
27, 31
Q11, Q10, Q9, Q8,
Q7, Q6, Q5, Q4,
Q3, Q2, Q1, Q0
VDDO
Type
Description
Power
Power supply ground.
Power
Input
Input
Input
Pullup
Pulldown
Pullup
Positive supply pins.
Synchronous control for enabling and disabling clock outputs.
LVCMOS / LVTTL interface levels.
Single-ended clock input. LVCMOS/LVTTL interface levels.
Output enable. Controls enabling and disabling of outputs Q[0:11].
LVCMOS / LVTTL interface levels.
Output
Single-ended clock outputs. LVCMOS/LVTTL interface levels.
Power
Output supply pins.
NOTE: Pullup and Pulldown refer to internal input resistors. See Table 2, Pin Characteristics, for typical values.
Table 2. Pin Characteristics
Symbol
Parameter
CIN Input Capacitance
RPULLUP
Input Pullup Resistor
RPULLDOWN Input Pulldown Resistor
CPD
Power Dissipation Capacitance
(per output)
ROUT
Output Impedance
Test Conditions
VDDO = 3.465V
VDDO = 2.625V
VDDO = 2V
VDDO = 3.3V ± 5%
VDDO = 2.5V ± 5%
VDDO = 1.8V ± 0.2V
Minimum
Typical
4
51
51
7
7
10
Maximum
19
18
16
Units
pF
k
k
pF
pF
pF
IDT™ / ICS™ LVCMOS/LVTTL FANOUT BUFFER
2
ICS8312AY REV. D JULY 3, 2008


Part Number ICS8312
Description 1-TO-12 LVCMOS/LVTTL FANOUT BUFFER
Maker Integrated Device Technology
Total Page 18 Pages
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