PC8477B datasheet(39/54 Pages) NSC

39 / 54 page

60 Device Description (Continued)

DC Characteristics

Under Recommended Operating Conditions (Continued)

Symbol

Parameter

Conditions

Min

Typ

Max

Units

MICROPROCESSOR INTERFACE PINS

(D7 – D0 A2 – A0 CS RD WR INT DRQ DACK TC RESET)

VOH

Output High Voltage

IOH eb4 mA

VOL

Output Low Voltage

IOL e 12 mA

IOZ

Input TRI-STATE

VIN e VCC

Leakage Current

VIN e 0

(D7 – D0 INT DRQ)

DISK INTERFACE PINS

Input Hysteresis

250

VOH

Output High Voltage (Note 5)

IOH eb4 mA

VOL

Output Low Voltage

IOL e 48 mA

ILKG

Output High Leakage Current

VIN e VCC

(Note 6)

VIN e 0V

MISCELLANEOUS PINS

VOH

Output High Voltage

IOH eb4mA

(DRATE0 – 1 MFM)

VOL

Output Low Voltage

IOL e 6mA

(DRATE0 – 1)

VOL

Output Low Voltage (MFM)

IOL e 4 mA

Note 5

VOH for the disk interface pins is valid for CMOS buffered outputs only

Note 6

This parameter is valid for Open Drain output configuration only

62 PHASE LOCKED LOOP CHARACTERISTICS

Parameter

Symbol

Conditions

Min

Typ

Max

Units

Dynamic Window Margin

TDW

(Note)

Note

Dynamic window margin is tested at both VCC extremes with a repeating ‘‘DB6’’ pattern and 0% MSV 500 kbs 300 kbs 250 kbs and 1 Mbs are tested

at 68%

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