ACS103 Issue 2.03 May 1996.

9

2

Static Digital Output Characteristics (for specified operating conditions)

Output pins: RxD1/2/3, CTS, DSR, XO3, DCDB, LIN, ERD, XLO, RxCL, TxCL(output)

Parameter

Symbol

Min

Typ

Max

Units

Vout Low (Iout = 4mA)

Vol

0

-

0.5

V

Vout High (Iout = 4mA)

Voh

VDD-0.5

-

-

V

Max load capcitance

Cl

-

-

50

pF

XLO (Note 2)

-

-

-

-

pF

Note 2:

XLO does not have a drive capability other than that of the load presented by a parallel resonant crystal and appropriate padding

capacitor.

Dynamic Characteristics

Parameter

Symbol

Min

Typ

Max

Units

Crystal frequency

(XTI, XTO)

frc

5

9.216

10

MHz

External clock (XTI)

High or Low time

fcl

40

-

60

%

RxD and TxD data rate

ACS101 mode

Synchronous

standard

double

Asynchronous

standard

double

fckc

2.4

9.6

DC

DC

-

256

64

38.4

19.2

kbps

RxD and TxD data rate

ACS103 mode

Synchronous

standard

double

Asynchronous

standard

double

fckc

2.4

9.6

DC

DC

-

64

38.4

9.6

4.8

kbps

RxCL and TxCL duty cycle

(with TxCL = output)

twh

twl

-

50

-

%

Frequency deviation at TxCL from

selected value (with TxCL = input)

Fd

-

-

500

ppm

TxD to TxCL set-up time

tsut

300

-

-

ns

TxD to TxCL hold time

tht

25

-

-

ns

RxD to RxCL set-up time

tsur

-

0.5 *1/RxCL

-

ns

RxD to RxCL hold time

thr

-

0.5 *1/RxCL

-

ns

Digital output - fall time

tf

-

-

100

ns

Digital output - rise time

tr

-

-

100

ns

Power consumption:

TCL floating (or 100kOhms)

TCL tied to GND

(Note 3)

Pc

-

200

150

300

250

mW

Note 3:

Power consumption assumes that digital outputs drive CMOS loads.