MC145443B, MC145442B - Single-Chip 300-Baud Modem

Motorola

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MC145443B Datasheet Preview — This datasheet PDF includes multiple part numbers: MC145443B, MC145442B. Please refer to the document for exact specifications by model.

Datasheet Details

Part number	MC145443B, MC145442B
Manufacturer	Motorola
File Size	111.09 KB
Description	Single-Chip 300-Baud Modem
Datasheet	MC145442B_Motorola.pdf
Note	This datasheet PDF includes multiple part numbers: MC145443B, MC145442B. Please refer to the document for exact specifications by model.

MC145443B Product details

Description

ABSOLUTE MAXIMUM RATINGS (Voltages Referenced to VSS) Rating Supply Voltage DC Input Voltage DC Output Voltage Clamp Diode Current, per Pin DC Output Current, per Pin Power Dissipation Operating Temperature Range Storage Temperature Range Symbol VDD Vin Vout IIK, IOK Iout PD TA Tstg Value 0.5 to 7.0 0.5 to VDD + 0.5 0.5 to VDD + 0.5 ±20 ±28 500 40 to 85 65 to 150 Unit V V V mA mA mW °C °C This device contains circuitry to protect the inputs against

Features

es for the selected mode. (See Tables 1 and 2 and Figures 4c and 4d. ) When LB is connected to analog ground (VAG), the modulator generates an echo cancellation tone of 2100 Hz for MC145442B CCITT V.21 and 2225 Hz for MC145443B Bell 103 systems. For normal operation, this pin should be at a logic low level (VSS). The power.
down mode is enabled when both LB and SQT are connected to a logic high level (see Table 2). Table 2. Functional Table MODE Pin 13 1 0 X X X X X SQT Pin 14 0 0 0 0 1 1.

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Published: Aug 28, 2005 |