CDC913 datasheet(4/10 Pages) TI

4 / 10 page

CDC913

PC MOTHERBOARD CLOCK GENERATOR

WITH DUAL 1-TO-4 BUFFERS AND 3-STATE OUTPUTS

SCAS502C – APRIL 1995 – REVISED MAY 1996

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†

Supply voltage range, VCC

–0.5 V to 4.6 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Input voltage range, VI (see Note 1)

–0.5 V to 4.6 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Voltage range applied to any output in the high state or power-off state, VO

–0.5 V to VCC + 0.5 V

. . . . . . . .

Current into any output in the low state, IO

IOHmax

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Input clamp current, IIK (VI < 0)

–18 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Output clamp current, IOK (VO < 0)

–50 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maximum power dissipation at TA = 55°C (in still air) (see Note 2): DB package

0.65 W

. . . . . . . . . . . . . . . . .

DW package

1.7 W

. . . . . . . . . . . . . . . . . .

Storage temperature range, Tstg

–65

°C to 150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

† 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 Considerations application note in the ABT Advanced BiCMOS Technology Data

Book, literature number SCBD002.

recommended operating conditions (see Note 3)

MIN

MAX

UNIT

VCC

Supply voltage

3.135

3.6

VIH

High-level input voltage

VIL

Low-level input voltage

0.8

Input voltage

VCC

REFCLK

–12

PCICLK

–6

IOH

High-level output current

CPUCLK

–6

1Yn

–12

2Yn

–12

REFCLK

PCICLK

IOL

Low-level output current

CPUCLK

1Yn

2Yn

Operating free-air temperature

°C

NOTE 3: Unused inputs must be held high or low to prevent them from floating.

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