ICS86004-02 Datasheet, PDF (2/10 Pages) Integrated Device Technology – 62.5MHZ TO 250MHZ, 1-TO-4 LVCMOS/LVTTL ZERO DELAY CLOCK BUFFER

ICS86004-02
62.5MHz TO 250MHz, 1-TO-4 LVCMOS/LVTTL ZERO DELAY CLOCK BUFFER
PRELIMINARY
TABLE 1. PIN DESCRIPTIONS
Number Name
Type
Description
1, 3,
13, 15
Q1, Q0,
Q3, Q2
Output
Clock outputs. 7Ω typical output impedance. LVCMOS/LVTTL interface levels.
2, 7, 14
GND Power
Power supply ground.
Frequency range select input. When LOW, I/O frequency range is from
4
F_SEL Input Pulldown 125MHz to 250Mz. When HIGH, I/O frequency range is from
62.5MHz to 125MHz. LVCMOS/LVTTL interface levels.
5
V_DD
Power
Core supply pin.
6
CLK
Input Pulldown LVCMOS/LVTTL clock input.
8
V_DDA
Power
Analog supply pin.
Selects between the PLL and reference clock as input to the dividers.
9
PLL_SEL Input Pullup When LOW, selects the reference clock (PLL Bypass). When HIGH,
selects PLL (PLL Enabled). LVCMOS/LVTTL interface levels.
10
FB_IN
Input
Pulldown
Feedback input to phase detector for regenerating clocks with "zero delay".
Connect to one of the outputs. LVCMOS/LVTTL interface levels.
Active HIGH Master Reset. When logic HIGH, the internal dividers are reset
11
MR
Input Pulldown causing the outputs to go low. When logic LOW, the internal dividers and the
outputs are enabled. LVCMOS/LVTTL interface levels.
12, 16
V_DDO
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
C_IN
R_PULLUP
R_PULLDOWN
Parameter
Input Capacitance
Input Pullup Resistor
Input Pulldown Resistor
C_PD
Power Dissipation Capacitance
(per output)
R_OUT
Output Impedance
Test Conditions
V_DD, V_DDA, V_DDO = 3.465V
V_DD, V_DDA = 3.465V,
V_DDO = 2.625V
3.3V ± 5%
Minimum
Typical
4
51
51
TBD
Maximum
Units
pF
kΩ
kΩ
pF
TBD
pF
5
7
12
Ω
TABLE 3. CONTROL INPUT FUNCTION TABLE
Input
F_SEL
0
1
Input/Output
Frequency Range (MHz)
Minimum Maximum
125
250
62.5
125
IDT^™ / ICS^™ LVCMOS/LVTTL ZERO DELAY CLOCK BUFFER
2
ICS86004AG-02 REV A NOVEMBER 3, 2006