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SI2403

V.22BIS ISOMODEM® CHIPSET WITH ERROR CORRECTION

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Si2403

Table 5. Absolute Maximum Ratings

Parameter

Symbol

Value

Unit

DC Supply Voltage

VD

4.1

V

Input Current, Si2403 Digital Input Pins

IIN

±10

μA

Digital Input Voltage

VIND

–0.3 to 5.3

V

CLKIN/XTALI Input Voltage

VXIND

–0.3 to (VD + 0.3)

V

Operating Temperature Range

TA

–10 to 100

°C

Storage Temperature Range

TSTG

–40 to 150

°C

Note: Permanent device damage may occur if the above Absolute Maximum Ratings are exceeded. Functional operation

should be restricted to the conditions as specified in the operational sections of this data sheet. Exposure to absolute

maximum rating conditions for extended periods may affect device reliability.

Table 6. Switching Characteristics

(VD = 3.0 to 3.6 V, TA = 0 to 70 °C for K-Grade)

Parameter

Symbol

Min

Typ

Max

Unit

CLKOUT Output Clock Frequency

2.4576

—

39.3216

MHz

Baud Rate Accuracy

tBD

–1

—

1

%

CTS or RTS ↑ High to Start Bit↓

tRTS

10

—

—

ns

RESET ↓ to RESET ↑

tRS

5.0

—

—

ms

RESET ↑ to 1st AT Command

tAT

300

—

—

ms

Address Setup

tAS

15

—

—

ns

Address Hold

tAH

0

—

—

ns

WR Low Pulse Width

tWL

50

—

—

ns

Write Data Setup Time

tWDSU

20

—

—

ns

Write Cycle Time

tWC

120

—

—

ns

Chip Select Setup

tCSS

10

—

—

ns

Chip Select Hold

tCSH

0

—

—

ns

RD Low Pulse Width

tRL

50

—

—

ns

RD Low to Data Driven Time

tRLDD

—

—

20

ns

Data Hold

tDH

10

—

—

ns

RD High to Hi-Z Time

tDZ

—

—

30

ns

Read Cycle Time

tRC

120

—

—

ns

Note: All timing is referenced to the 50% level of the waveform. Input test levels are VIH = VD – 0.4 V, VIL = 0.4 V

8

Rev. 1.2

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