
CDC9842
PC MOTHERBOARD CLOCK SYNTHESIZER/DRIVER
WITH 3-STATE OUTPUTS
SCAS546B – NOVEMBER 1995 – REVISED MAY 1996
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, V
I
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage range applied to any output in the high-impedance state or power-off state,
V
O
(see Note 1)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Current into any output in the low state, I
O
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input clamp current, I
IK
(V
I
< 0)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output clamp current, I
OK
(V
O
< 0)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum power dissipation at T
A
= 55
°
C (in still air) (see Note 2)
Storage temperature range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES:
1. The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed.
2. The maximum package power dissipation is calculated using a junction temperature of 150
°
C and a board trace length of 750 mils.
For more information, refer to the Package Thermal Considerationsapplication note in the ABT Advanced BiCMOS Technology Data
Book literature number SCBD002.
–0.5 V to 4.6 V
–0.5 V to 4.6 V
–0.5 V to V
CC
+ 0.5 V
16 mA
–18 mA
–50 mA
1.2 W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–65
°
C to 150
°
C
recommended operating conditions (see Note 3)
MIN
MAX
UNIT
VCC
VIH
VIL
VI
IOH
IOL
TA
NOTE 3: Unused inputs must be held high or low to prevent them from floating.
Supply voltage
3.135
3.6
V
High-level input voltage
2
V
Low-level input voltage
0.8
V
Input voltage
0
VCC
–8
V
High-level output current
mA
Low-level output current
8
mA
°
C
Operating free-air temperature
0
70
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
TA = 25
°
C
TYP
UNIT
MIN
MAX
VIK
VOH
VOL
II
IOZ
VCC = 3.135 V,
VCC = 3.135 V,
VCC = 3.135 V,
VCC = 3.6 V,
VCC = 3.6 V,
VCC = 3.6 V,
VCC 3.6 V,
VI = VCC or GND
VI = VCC or GND
VO = VCC or GND
II = –18 mA
IOH = –8 mA
IOL = 8 mA
VI = VCC or GND
VO = VCC or GND
IO = 0,
IO 0,
–1.2
V
2.5
V
0.4
±
1
V
μ
A
μ
A
mA
ICC
Outputs enabled§
50
Outputs disabled
1
mA
Ci
Co
6
pF
6
pF
All typical values are at VCC = 3.3 V.
§Device in normal operating mode with no load on outputs