SM8211 Просмотр технического описания (PDF) - Nippon Precision Circuits

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SM8211

POCSAG Decoder For Pagers

Nippon Precision Circuits  

SM8211M

AC Characteristics

VDD = 1.2 to 3.5 V, VSS = 0 V, Ta = −20 to 70 °C unless otherwise noted

Parameter

Symbol

Condition

TX-CLK pulsewidth

TX-CLK pulse cycle

TX-DATA setup time

TX-DATA hold time

tPWTX

tCYTX

tSTX

tHTX

XT pulse frequency

tCYXT

XT pulse duty cycle

BREAK pulsewidth

RX-CLK pulse cycle1

RX-CLK pulsewidth1

RX-DATA lead time1

RX-DATA hold time1

DXT

tPWBR

tCYRX

tPWRX

tSRX

tHRX

512 bps

1200 bps

512 bps

1200 bps

512 bps

1200 bps

512 bps

1200 bps

1. Internal digital PLL operation is subject to some change.

Rating

Unit

min

typ

max

13

–

100

µs

450

–

–

µs

1.0

–

–

µs

1.0

–

–

µs

−250 ppm

76.8 or

153.6

+250 ppm

kHz

25

–

75

%

13

–

–

µs

–

1953

–

µs

–

833

–

–

124

–

µs

–

52

–

–

1341

–

µs

–

573

–

–

488

–

µs

–

208

–

AC timing

TX-CLK

TX-DATA

RX-CLK

RX-DATA

t PWTX

t CYTX

t STX

t HTX

t CYRX

t PWRX

t SRX

t HRX

NIPPON PRECISION CIRCUITS—4

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