MC145442B 查看數據表（PDF） - Motorola => Freescale

零件编号

产品描述 (功能)

生产厂家

MC145442B

Single–Chip 300–Baud Modem

Motorola => Freescale 

16

RxA1

HYBRID

7

CDA

VCDA ≈ 1.2 V

CCDA

0.1 µF

ac

AUTO–NULLED

AMP

COMPARATOR

Vref

THRESHOLD

CONTROL

6 ms

RETRIGGERABLE

ONE–SHOT

SAMPLING

CLOCK

Figure 5. Carrier Detect Circuit

VDD

3

CD

4 CDT

CCDT

0.1 µF

MODULATOR

OUTPUT

DSI

RDSI

1

R0 = Rf

R0

Rf

TxA

ExI

–

17

18

+

VAG

Ri

19

Figure 6. Line Driver Using the DSI Input

MOTOROLA

MC145442B•MC145443B

9

Share Link: