Motore di ricerca datesheet componenti elettronici |
|
MC145745 Scheda tecnica(PDF) 1 Page - Motorola, Inc |
|
MC145745 Scheda tecnica(HTML) 1 Page - Motorola, Inc |
1 / 16 page MC145745 MOTOROLA 1 Product Preview V.21/V.23 Telemeter Modem The MC145745 is a selectable modem chip compatible with ITU V.21 (300 baud full duplex asynchronous) and V.23 mode 2 (1200 baud half duplex asynchronous). The built–in differential line driver has the capability of driving 0 dBm into a 600 Ω load with a 5 V single power supply. This device also includes a DTMF generator, DTMF receiver, call–progress tone detector, answer tone generator, and a receive timing control circuit. Besides having a clock generator with a crystal oscillator connected to it, the device has a divider circuit to which input of a double frequency clock is possible from external sources, such as from a microcontroller unit (MCU). The serial control port (SCP) permits the MCU to access internal registers for exercising the built–in features. A low consumption device, the MC145745 integrates various functions in a small package. This modem IC is best suited for telemeter and other applications of this type. • Conforms to ITU V.21 and V.23 Recommendations • DTMF Generator and Receiver for all 16 Standard Digits • Capable of Driving 0 dBm into a 600 Ω Load (VCC = 5 V) • Automatic Gain Control (AGC) Amplifier for the DTMF Receiver • Call–Progress Tone Detector • Four–Wire Serial Data Interface (SCP) • Programmable Transmission and Carrier Detection Levels • FSK/DTMF Analog Loopback Self–Test Function • Crystal Oscillator (3.579545 MHz) and Half Divider Circuit (7.159090 MHz) for External Inputs • Operates in the Voltage Range of 3.3 – 5.5 V • Power Down Mode (ICC < 1 µA) This document contains information on a product under development. Motorola reserves the right to change or discontinue this product without notice. Order this document by MC145745/D MOTOROLA SEMICONDUCTOR TECHNICAL DATA PIN ASSIGNMENT MC145745 FW SUFFIX SOIC CASE 751M ORDERING INFORMATION MC145745FW SOIC 28 1 5 4 3 2 1 10 9 8 7 6 11 12 13 14 20 21 22 23 24 25 26 19 27 28 18 17 16 15 GND Vref CDA TLA TEST 1 RxD TxD CD CLKO X1 X2 ECLK PB0 GND VCC RxA TxA1 TxA2 TEST 2 SCPEN SCPCLK SCP Rx SCP Tx RESET PB3 PB2 PB1 VCC © Motorola, Inc. 1996 REV 0 7/96 |
Codice articolo simile - MC145745 |
|
Descrizione simile - MC145745 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEETIT.COM |
Lei ha avuto il aiuto da alldatasheet? [ DONATE ] |
Di alldatasheet | Richest di pubblicita | contatti | Privacy Policy | scambio Link | Ricerca produttore All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |