MT8880CS datasheet(11/18 Pages) MITEL

Part #	MT8880CS

Description	ISO2-CMOS Integrated DTMFTransceiver

PDF	18 Pages

Scroll/Zoom	100%

Manufacturer	MITEL [Mitel Networks Corporation]

Direct Link	http://www.mitel.com

Logo

11 / 18 page

ISO2-CMOS

MT8880C/MT8880C-1

4-43

Figure 13 - Application Circuit (Single-Ended Input)

Figure 14 - Test Circuit

IN+

IN-

VRef

VSS

OSC1

OSC2

TONE

R/W

VDD

St/GT

ESt

IRQ/CP

Φ2

RS0

DTMF/CP

INPUT

DTMF

OUTPUT

X-tal

VDD

µP

µC

Notes:

R1, R2 = 100 k

Ω 1%

R3 = 374

Ω 1%

R4 = 3.3 k

Ω 10%

RL = 10 k Ω (min.)

C1 = 100 nF 5%

C2 = 100 nF 5%

C3 = 100 nF 10%*

C4 = 10 nF 10%

X-tal = 3.579545 MHz

* Microprocessor based systems can inject undesirable noise into

the supply rails. The performance of the MT8880 can be optimized

by keeping noise on the supply rails to a minimum. The decoupling

capacitor (C3) should be connected close to the device and ground

loops should be avoided.

MT8880C/C-1

TEST POINT

MMD6150

(or equivalent)

5.0 VDC

2.4 k

Ω

24 k

Ω

130 pF

MMD7000

(or equivalent)

TEST POINT

5.0 VDC

3 k

Ω

70 pF

Test load for IRQ/CP pin

Test load for D0-D3 pins

MT8880CS Datasheet(PDF) 11 Page - Mitel Networks Corporation

MT8880CS Datasheet(HTML) 11 Page - Mitel Networks Corporation

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

Datasheet Download

Link URL