ICS87949-01 Datasheet, PDF (3/13 Pages) Integrated Circuit Systems – LOW SKEW ÷1, ÷2 CLOCK GENERATOR

Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS87949-01
LOW SKEW ÷1, ÷2
CLOCK GENERATOR
TABLE 2. PIN CHARACTERISTICS
Symbol Parameter
C_IN
Input Capacitance
R_PULLUP
Input Pullup Resistor
R_PULLDOWN Input Pulldown Resistor
C_PD
Power Dissipation Capacitance (per output)
R_OUT
Output Impedance
*NOTE: V_DDx denotes V_DDA, V_DDB, V_DDC, V_DDD.
Test Conditions
V_DD, *V_DDx = 3.465V
Minimum
Typical
51
51
TBD
7
Maximum
4
Units
pF
KΩ
KΩ
pF
Ω
TABLE 3. FUNCTION TABLE
MR/nOE
1
0
0
0
0
0
0
0
0
DIV_SELA
X
0
1
X
X
X
X
X
X
Inputs
DIV_SELB
X
X
X
0
1
X
X
X
X
DIV_SELC
X
X
X
X
X
0
1
X
X
DIV_SELD
X
X
X
X
X
X
X
0
1
QA0 - QA1
Hi Z
fIN/1
fIN/2
Active
Active
Active
Active
Active
Active
Outputs
QB0 - QB2 QC0 - QC3
Hi Z
Hi Z
Active
Active
Active
Active
fIN/1
Active
fIN/2
Active
Active
fIN/1
Active
fIN/2
Active
Active
Active
Active
QD0 - QD5
Hi Z
Active
Active
Active
Active
Active
Active
fIN/1
fIN/2
87949AY-01
www.icst.com/products/hiperclocks.html
3
REV. A JANUARY 2, 2002