MC145446A
features
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- Single 5 V Power Supply patible with CCITT V.21 DTMF Generator and Receiver for All 16 Standard Digits Capable of Driving 0 d Bm into a 600 Ω Load (VCC = 5 V) AGC (Auto Gain Control) Amplifier for DTMF Receiver Imprecise Call Progress Tone (400 Hz) Detector A Transmit Attenuator Programmable in 1 d B Steps 2100 Hz Answer Tone Generator Serial Control Interface Analog Loopback Configuration for Self Test Power- Down Mode, Less than 1 µA
28 1
FW SUFFIX SOP CASE 751M
ORDERING INFORMATION
MC145446AFW SOP
PIN ASSIGNMENT
VCC GND Vref CDA DTMF IN AGC OUT FTLC2 FTLC3 X1 X2 TLA GND VCC R/W 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 FTLC1 Rx BO Rx GC Rx A Tx A1 Tx A2 DSI VCC E SCK DATA I/O Tx D Rx D SD/CD/DV
This document contains information on a new product. Specifications and information herein are subject to change without notice.
REV 1 7/96
© Motorola, Inc. 1996 MOTOROLA
MC145446A 1
BLOCK DIAGRAM
AGC OUT FLTC2 FLTC3 FLTC1
DTMF...
