MT8993 Datasheet PDF – Digital Telephone with HDLC

Part Number : MT8993

Function : Digital Telephone with HDLC(H-Phone), Intergrated digital telephone circuit

Package : DIP 40 Pin

Manufacturers : Mitel Networks

Pinouts :

MT8993 datasheet


1. Integrated digital telephone circuit
2. Programmable rececive gain
3. DTMF/Tone generator and tone ringer
4. Speakerphone Operation
5. Interface to standard telephony transducers

Description :

The MT8992, MT8993, MT8993B is an intergrated digital telephone circuit which provides an on-chip HDLC data formatter(H-Phone). Conversion of analog signals to digital PCM and vice versa is accomplished with an on-chip filter codec. Digital signal processing techniques provide speakerphone operation and generation of ringing tone and DTMF signals.

Not recommended for New Designs See MT9092

Other data sheets within the file : MT8992, MT8993B, MT8993BC

MT8993 Datasheet PDF Download

MT8993 pdf


K2411 Datasheet PDF – Telephone Tone Ringer

Part Number : K2411

Function : Telephone Tone Ringer

Package : DIP 8 pin

Manufacturers : Forward international electronic

Pinouts :

K2411 datasheet


Description :

The 2411 is a bipolar integrated circuit designed for telephone tone ringer.


1. Designed for telephone bell replacement
2. Adjustable 2-tone frequency
3. Hysteresis circuit prevents false triggering and rotary dial “Chirps”
4. Adjustable for reduced supply initiation current

Appication Circuit


Absolute Maximum Ratings

1. DC Supply Voltage : Vcc = 36 V
2. Power Dissipation : Pd = 450 mW
3. Operating Temperature : -25 ~ +75 ‘C
4. Storage Temperature : -55 ~ +125 ‘C

K2411 Datasheet PDF Download

K2411 pdf