MC145740F 查看數據表（PDF） - Motorola => Freescale

零件编号

产品描述 (功能)

生产厂家

MC145740F

Dual Tone Multiple Frequency Line Interface

Motorola => Freescale 

APPLICATION CIRCUIT

TIP

RING

10 Ω 600 : 600

*

600 Ω

100 µF 0.1 µF

0.1 µF

0.1 µF

3.579545 MHz

TxA1

1

TxA2

2

RxA 3

AGCout*

4

Vref 5

FC1 6

FC2 7

X1

8

X2

9

GND

10

DSI*

20

19 VCC

18 GND

CLK

17

EN

16

15 DATA

14 R/W

TD

13

12 DV

11 VCC

RDSI

100 µF

0.1 µF

+5V

MCU

* Protection Network

Reference Analog Ground

System Ground

* The external devices (i.e., modem) may be connected on these pins, using the built–in line interface circuit.

MOTOROLA

MC145740

11

Share Link: