MC14LC5447P 데이터 시트보기 (PDF) - Motorola => Freescale

부품명

상세내역

제조사

MC14LC5447P

Calling Line Identification (CLID) Receiver with Ring Detector

Motorola => Freescale 

APPLICATION CIRCUIT

500 pF

MC14LC5447

TIP

C1

C3 10 kΩ

VDD

0.1 µF

PROTECTION

NETWORK

RING

C2

1N4004x4

500 pF

C4 10 kΩ

470 kΩ

18 kΩ

TI 1 16 15 DOC

RI 2

14 DOR

RDI1 3

13 CDO

RDI2 4

12 RDO

NC 5

11 CLKSIN

RT 6

PWRUP 7

10 OSCin

8

9 OSCout

3.579 MHz

15 kΩ

+5 V

NOTE: C1 and C2 ≥ 0.2 µF required for line

isolation. C1 through C4 are 250 V min,

non–polarized.

270 kΩ

0.2 µF

+5 V

30 pF

4.7 MΩ

10 MΩ

0.33 µF

VDD

30 pF

TO PC

TO PC

MC145407

Figure 7. Partial Implementation of PC Interface to Tip and Ring

FIRST RING

0.5

2 SECONDS

SEC

0.5

SECOND RING

SEC

2 SECONDS

RI

0101 1

DATA

RT

RDO

PWRUP

CDO

NOTE 1

NOTE 1

NOTE 2

NOTE 3

DOR

DATA

DOC

DATA

OSC

3.58 MHz, 3.6864, OR 455 kHz

NOTES:

1. Wired ‘OR’ RDO with CDO.

2. Overlap of RDO edge with CDO edge to ensure part stays in PWRUP determined by RC time constant on RDO, PWRUP,

and CDO pin.

3. Part reverts to PWR ON, on rising edge of RDO since there is no CDO.

Timing Diagram for Figure 7

MC14LC5447

8

MOTOROLA

Share Link: