68HC05CL48 datasheet(94/145 Pages) MOTOROLA

94 / 145 page

GENERAL RELEASE SPECIFICATION

June 11, 1997

MOTOROLA

CALLER-ID

MC68HC05CL48

11-10

REV 2.0

The transmission level from the terminating C.O will be -13.5 dBm +/- 1.0. The

expected worst case attenuation through the loop is expected to be -20dB. The

receiver therefore, should have a sensitivity of approximately -34.5 dB to handle

the worst case installations.

Table 11-2. Critical Design Characteristic

Characteristics

Typ

Unit

Input Tip/Ring Sensitivity (600 ohm)

-40

dBm

Ring/Tip Common Mode Rejection Ratio

Bandpass Filter (BPF)

Frequency Response (relative to 1700

Hz @ 0 dB)

60 Hz

1000 Hz

2400 Hz

>=3300 Hz

-58

-1

-34

Carrier Detect Sensitivity (600 ohm)

-40 (-48 min)

dBm

Ring Detect Threshold (RDI2)

0.39*Vdd

± 0.1volt

Volts

RDI Threshold to keep RT_L=’1’

< 1.0

Volts

Table 11-3. Switching Characteristics (VDD= 5V; TA=25 C)

Description

Symbol

Min

Typ

Max

Unit

PLL Clock Start-up Time

tDOSC

Carrier Detect Acquisition

tDAQ

-14

End of Carrier Detect

tDCH

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