87C196 datasheet(13/25 Pages) INTEL

13 / 25 page

87C196KRKQ 87C196JVJT 87C196JRJQ

EXTERNAL CLOCK DRIVE

Symbol

Parameter

Min

Max

Units

1TXLXL

Oscillator Frequency

MHz

TXLXL

Oscillator Period (TOSC)

625

250

TXHXX

High Time

035 TOSC

065 TOSC

TXLXX

Low Time

035 TOSC

065 TOSC

TXLXH

Rise Time

TXHXL

Fall Time

EXTERNAL CLOCK DRIVE WAVEFORMS

270827 – 7

AC TESTING INPUT OUTPUT WAVEFORMS

270827 – 8

NOTE

AC Testing Inputs are driven at 35V for a logic ‘‘1’’ and

045V for a logic ‘‘0’’ Timing measurements are made

at 20V for a logic ‘‘1’’ and 08V for logic ‘‘0’’

FLOAT WAVEFORMS

270827 – 9

NOTE

For timing purposes a port pin is no longer floating

when a 150 mV change from load voltage occurs and

begins to float when a 150 mV change from the loading

VOH VOL level occurs IOL IOH s 15 mA

THERMAL CHARACTERISTICS

Device and Package

iJA

iJC

AN87C196KRKQ

41 CW

14 CW

(68-Lead PLCC)

AN87C196JVJTJRJQ

42 CW

15 CW

(52-Lead PLCC)

NOTES

1 iJA e Thermal resistance between junction and the surround-

ing environment (ambient) Measurements are taken 1

ft away from case in air flow environment

iJC e Thermal resistance between junction and package sur-

face (case)

2 All values of iJA and iJC may fluctuate depending on the en-

vironment (with or without airflow and how much airflow) and

device power dissipation at temperature of operation Typical

variations are g2 CW

3 Values listed are at a maximum power dissipation of 050W

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