CDC9841
PC MOTHERBOARD CLOCK SYNTHESIZER/DRIVER
WITH 3-STATE OUTPUTS
SCAS458D – DECEMBER 1994 – REVISED APRIL 1996
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
I = –18 mA
MIN
MAX
UNIT
V
IK
V
= 3.135 V,
–1.2
V
CC
CC
I
I
I
I
I
I
I
I
I
I
I
= –12 mA
= –8 mA
= –6 mA
= –12 mA
= –4 mA
= 12 mA
= 8 mA
REF0
2.5
2.5
2.5
2.5
2.5
OH
OH
OH
OH
OH
OL
OL
OL
OL
OL
REF1
PCLKn
V
OH
V
= 3.135 V
V
V
BCLKn
CLK24, CLK12
REF0
0.4
0.4
0.4
0.4
0.4
±1
REF1
= 6 mA
PCLKn
V
OL
V
CC
= 3.135 V
= 12 mA
= 4 mA
BCLKn
CLK24, CLK12
I
I
V
V
= 3.6 V,
= 3.6 V,
V = V
or GND
µA
µA
I
CC
I
CC
= V or GND
CC
V
O
±10
50
OZ
CC
CC
†
Outputs enabled
V
CC
= 3.6 V,
I
O
= 0,
I
mA
V = V
or GND
Outputs disabled
1
I
CC
CC
C
C
C
V = V
I
or GND
pF
pF
pF
i
V
O
= V
or GND
o
CC
V = 3 V or 0
I
pd
†
Device in normal operating mode with no load on outputs
timing requirements over recommended ranges of supply voltage and operating free-air
temperature
MIN
MAX
UNIT
After SEL1, SEL0
After OE↑
5
5
5
‡
Stabilization time
ms
After power up
‡
TimerequiredfortheintegratedPLLcircuittoobtainphaselockofitsfeedbacksignaltoitsreferencesignal. Inorderforphaselocktobeobtained,
a fixed-frequency, fixed-phase reference signal must be present at X1. Until phase lock is obtained, the specifications for propagation delay and
skew parameters given in the switching characteristics table are not applicable.
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TI [ TEXAS INSTRUMENTS ]
