ICS840-125 Datasheet, PDF (2/9 Pages) Integrated Circuit Systems – 125MHZ, LVCMOS/LVTTL OSCILLATOR REPLACEMENT

Integrated
Circuit
Systems, Inc.
ICS840-125
125MHZ, LVCMOS/LVTTL
OSCILLATOR REPLACEMENT
TABLE 1. PIN DESCRIPTIONS
Number
Name
Type
Description
1
V_DD
Power
2, 3
XTAL_OUT,
XTAL_IN
Input
Power supply pin.
Crystal oscillator interface. XTAL_IN is the input,
XTAL_OUT is the output.
4
OE
Input
Pullup
Output enable pin. When HIGH, Q output is enabled. When LOW,
forces Q output to HiZ state. LVCMOS/LVTTL interface levels.
5
GND
Power
Power supply ground.
6
V_DDO
Power
7
Q
Output
8
nc
Unused
Output supply pin.
Single-ended clock output. LVCMOS/LVTTL interface levels.
15Ω output impedance.
No connect
NOTE: Pullup refers to internal input resistors. See Table 2, Pin Characteristics, for typical values.
TABLE 2. PIN CHARACTERISTICS
Symbol
C_IN
R_PULLUP
R_OUT
Parameter
Input Capacitance
Input Pullup Resistor
Output Impedance
Test Conditions
Minimum
Typical
4
51
15
Maximum
Units
pF
kΩ
Ω
TABLE 3. CONROL FUNCTION TABLE
Control Inputs
OE
0
1
Output
Q
Hi-Z
Active
840AG-125
www.icst.com/products/hiperclocks.html
2
REV. A FEBRUARY 3, 2006