XR16C872 Ver la hoja de datos (PDF) - Exar Corporation

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XR16C872

Dual UART with 1284 Parallel Port and Plug-and-Play Controller

Exar Corporation 

XR16C872

Preliminary

1284 CONTROLLER AC ELECTRICAL CHARACTERISTICS (CONT'D)

Symbol

Parameter

T51

IOW# inactive to Host command active

(IOW# or IOR#)

T52

IOCHRDY pre-charge width at release

T53

Host address setup to IOR# active

T54

Host address hold from IOR# active

T55

Host data setup to IOR# inactive

T56

Host data hold from IOR# inactive

T57

IOR# active to IOCHRDY low

T58

IOCHRDY high to Host terminate

(IOR# inactive)

T59

IOR# inactive to Host command active

(IOW# or IOR#)

Limits

3.3

Min Max

Limits

5.0

Min Max

Units

40

ns

10

ns

40

ns

10

ns

0

20

ns

0

ns

0

20

ns

10

ns

40

ns

Conditions

ABSOLUTE MAXIMUM RATINGS

Supply range -0.5 to 7V ○

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Voltage at any pin

-0.5 V to VCC+0.5V

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Operating temperature

-40°C to +85°C

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Storage temperature ○ ○ ○ ○ ○ ○ ○ ○ ○ -65°C to +150°

Package dissipation (100-PQFP)

500 mW

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* thermal resistance: theta-ja

45 °C/Watt

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theta-jc

12 °C/Watt

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Rev. P1.00

12

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