MT8870DE datasheet, PDF - EEWORLD Datasheet

Datasheet> All Categories > Wireless rf/communication> Telecom circuit> MT8870DE

MT8870DE: DescriptionDTMF Signaling Circuit, CMOS, PDIP18, DIP-18; CategoryWireless rf/communication Telecom circuit; File Size137KB，17 Pages; ManufacturerDynex; Websitehttp://www.dynexsemi.com/

Download Datasheet Parametric Compare View All

MT8870DE Overview

DTMF Signaling Circuit, CMOS, PDIP18, DIP-18

MT8870DE Parametric

Parameter Name	Attribute value
Parts packaging code	DIP
package instruction	DIP,
Contacts	18
Reach Compliance Code	unknown
JESD-30 code	R-PDIP-T18
length	22.86 mm
Number of functions	1
Number of terminals	18
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
encapsulated code	DIP
Package shape	RECTANGULAR
Package form	IN-LINE
Certification status	Not Qualified
Maximum seat height	5.33 mm
Nominal supply voltage	5 V
surface mount	NO
technology	CMOS
Telecom integrated circuit types	DTMF SIGNALING CIRCUIT
Temperature level	INDUSTRIAL
Terminal form	THROUGH-HOLE
Terminal pitch	2.54 mm
Terminal location	DUAL
width	7.62 mm
Base Number Matches	1

Preview

Download Datasheet

View All

ISO

-CMOS

MT8870D/MT8870D-1

Integrated DTMF Receiver

Features

•

Complete DTMF Receiver

Low power consumption

Internal gain setting ampliﬁer

Adjustable guard time

Central ofﬁce quality

Power-down mode

Inhibit mode

Backward compatible with

MT8870C/MT8870C-1

ISSUE 5

March 1997

Ordering Information

MT8870DE/DE-1 18 Pin Plastic DIP

MT8870DS/DS-1 18 Pin SOIC

MT8870DN/DN-1 20 Pin SSOP

-40

°C

to +85

°C

Description

The MT8870D/MT8870D-1 is a complete DTMF

receiver integrating both the bandsplit ﬁlter and

digital decoder functions. The ﬁlter section uses

switched capacitor techniques for high and low

group ﬁlters; the decoder uses digital counting

techniques to detect and decode all 16 DTMF tone-

pairs into a 4-bit code. External component count is

minimized by on chip provision of a differential input

ampliﬁer, clock oscillator and latched three-state bus

interface.

Applications

•

Receiver system for British Telecom (BT) or

CEPT Spec (MT8870D-1)

Paging systems

Repeater systems/mobile radio

Credit card systems

Remote control

Personal computers

Telephone answering machine

VDD

VSS

VRef

INH

PWDN

Bias

Circuit

VRef

Buffer

Chip Chip

Power Bias

IN +

IN -

Dial

Tone

Filter

High Group

Filter

Zero Crossing

Detectors

Low Group

Filter

Digital

Detection

Algorithm

Code

Converter

and Latch

to all

Chip

Clocks

Steering

Logic

OSC1

OSC2

St/GT

ESt

STD

TOE

Figure 1 - Functional Block Diagram

4-11

MT8870DE Related Products

	MT8870DE	MT8870DN	MT8870DN-1	MT8870DS	MT8870DS-1	MT8870DE-1
Description	DTMF Signaling Circuit, CMOS, PDIP18, DIP-18	DTMF Signaling Circuit, CMOS, PDSO20, SSOP-20	DTMF Signaling Circuit, CMOS, PDSO20, SSOP-20	DTMF Signaling Circuit, CMOS, PDSO18, SOIC-18	DTMF Signaling Circuit, CMOS, PDSO18, SOIC-18	DTMF Signaling Circuit, CMOS, PDIP18, DIP-18
Parts packaging code	DIP	SSOP	SSOP	SOIC	SOIC	DIP
package instruction	DIP,	SSOP,	SSOP,	SOP,	SOP,	DIP,
Contacts	18	20	20	18	18	18
Reach Compliance Code	unknown	unknown	unknown	unknown	unknown	unknown
JESD-30 code	R-PDIP-T18	R-PDSO-G20	R-PDSO-G20	R-PDSO-G18	R-PDSO-G18	R-PDIP-T18
length	22.86 mm	7.2 mm	7.2 mm	11.55 mm	11.55 mm	22.86 mm
Number of functions	1	1	1	1	1	1
Number of terminals	18	20	20	18	18	18
Maximum operating temperature	85 °C	85 °C	85 °C	85 °C	85 °C	85 °C
Minimum operating temperature	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	DIP	SSOP	SSOP	SOP	SOP	DIP
Package shape	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	IN-LINE	SMALL OUTLINE, SHRINK PITCH	SMALL OUTLINE, SHRINK PITCH	SMALL OUTLINE	SMALL OUTLINE	IN-LINE
Certification status	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	5.33 mm	2 mm	2 mm	2.65 mm	2.65 mm	5.33 mm
Nominal supply voltage	5 V	5 V	5 V	5 V	5 V	5 V
surface mount	NO	YES	YES	YES	YES	NO
technology	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS
Telecom integrated circuit types	DTMF SIGNALING CIRCUIT	DTMF SIGNALING CIRCUIT	DTMF SIGNALING CIRCUIT	DTMF SIGNALING CIRCUIT	DTMF SIGNALING CIRCUIT	DTMF SIGNALING CIRCUIT
Temperature level	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL
Terminal form	THROUGH-HOLE	GULL WING	GULL WING	GULL WING	GULL WING	THROUGH-HOLE
Terminal pitch	2.54 mm	0.635 mm	0.635 mm	1.27 mm	1.27 mm	2.54 mm
Terminal location	DUAL	DUAL	DUAL	DUAL	DUAL	DUAL
width	7.62 mm	5.3 mm	5.3 mm	7.493 mm	7.493 mm	7.62 mm
Maker	-	Dynex	Dynex	Dynex	Dynex	Dynex

Recommended Resources

Make a timer circuit using a time clock

8A regulated power supply for automobiles

Little Swan Fangtai type range hood circuit diagram

Gas concentration detection power circuit

Electronic electroscope

Simple TTL delay circuit (1) circuit diagram

EEWORLD University Hall----Resistor and Capacitor Manual Welding Training: Resistor and capacitor manual welding training : https://training.eeworld.com.cn/course/3624...; 量子阱 Analog electronics

Centralized monitoring and alarm system for hot spot temperatures in power system substations, substation line joints, terminal boards, etc.: [b][font=宋体][size=11.0pt]1. Application Overview[/size][/font][/b][b][font=宋体][/font][/b] [font=宋体][size=10.5pt] JUCSAN[/size][/font][font=宋体][size=10.5pt]The hot spot monitoring and early warning sys...; LUKEBS Test/Measurement

Please advise on cycle.CPU:Excl.Total? ?: [i=s]This post was last edited by dontium on 2015-1-23 13:24[/i] I would like to ask, when using profile to view the CPU cycle of a function during soft simulation, what is the difference between cycl...; mz_flying Analogue and Mixed Signal

About AD8367 AGC: Yesterday I made an AD8367 AGC circuit, which is the most basic one in the manual. The circuit works, and the AGC output is 254MV, which remains basically unchanged when it reaches tens of megahertz. ...; 单片机菜菜 Analog electronics

Regarding the delay of nRF24L01 wireless transmission, how to calculate the specific time? Please give me some advice.: [i=s] This post was last edited by longhui520 on 2016-1-30 15:39 [/i] I use two ATMEGA16A chips to control one RF24L01 to send and receive commands/data. What is the approximate time delay between the...; longhui520 RF/Wirelessly

Transfer DE2 development board: DE2 development board, basically never used after purchase, now for sale for 1600 yuan, I am in Fuzhou, students in Fuzhou can come to check the boardContact: Mr. Ding Tel: 18705016165 QQ: 43034912[[i...; zcxDYJ77 Buy&Sell

Shortcut: 00 01 02 03 04 05 06 07 08 09 0A 0C 0F 0J 0L 0M 0R 0S 0T 0Z 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 1H 1K 1M 1N 1P 1S 1T 1V 1X 1Z 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 2G 2K 2M 2N 2P 2Q 2R 2S 2T 2W 2Z 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 3G 3H 3J 3K 3L 3M 3N 3P 3R 3S 3T 3V 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4M 4N 4P 4S 4T 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5E 5G 5H 5K 5M 5N 5P 5S 5T 5V 60 61 62 63 64 65 66 67 68 69 6A 6C 6E 6F 6M 6N 6P 6R 6S 6T 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7M 7N 7P 7Q 7V 7W 7X 80 81 82 83 84 85 86 87 88 89 8A 8D 8E 8L 8N 8P 8S 8T 8W 8Y 8Z 90 91 92 93 94 95 96 97 98 99 9A 9B 9C 9D 9F 9G 9H 9L 9S 9T 9W

Popular Components