ne5900n NXP Semiconductors, ne5900n Datasheet

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ne5900n

Manufacturer Part Number
ne5900n
Description
Call Progress Decoder
Manufacturer
NXP Semiconductors
Datasheet
1.NE5900N.pdf (7 pages)

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Philips Semiconductors
DESCRIPTION
The NE5900 call progress decoder (CPD) is a low cost, low power
CMOS integrated circuit designed to interface with a
microprocessor-controlled smart telephone capable of making
preprogrammed telephone calls. The call progress decoder
information to permit microprocessor decisions whether to initiate,
continue, or terminate calls. A tri-state, 3-bit output code indicates
the presence of dial tone, audible ring-back, busy signal, or re-order
tones.
A front-end bandpass filter is accomplished with switched
capacitors. The bandshaped signal is detected and the cadence is
measured prior to output decoding. In addition to the three data bits,
a buffered bandpass output and envelope output are available. All
logic inputs and outputs can interface with LSTTL, CMOS and
NMOS.
Circuit features include low power consumption and easy
application. Few and inexpensive external components are
required. A typical application requires a 3.58MHz crystal or clock,
470k resistor, and two bypass capacitors. The NE5900 is effective
where traditional call progress tones, PBX tones, and precision call
progress tones must be correctly interpreted with a single circuit.
FEATURES
ORDERING INFORMATION
1986 May 8
16-Pin Plastic Small Outline (SOL) Package
16-Pin Plastic Dual In-Line (DIP) Package
Fully decoded tri-state call progress status output
Works with traditional, precision, or PBX call progress tones
Low power consumption
Low cost 3.58MHz crystal or clock
No calibration or adjustment
Interfaces with LSTLL, CMOS, NMOS
Easy application
Call progress decoder
DESCRIPTION
1
PIN CONFIGURATION
APPLICATIONS
Modems
PBXs
Security equipment
Auto dialers
Answering machines
Remote diagnostics
Pay telephones
NOTE:
1. SOL — Released in large SO package only.
COUNT IN PROGRESS
EXT CLOCK IN/XTAL1
TEMPERATURE RANGE
CLEAR IN
0 to +70 C
0 to +70 C
TEST IN
XTAL2
INPUT
V
REF
Figure 1. Pin Configuration
0V
D
1
2
3
4
5
6
7
8
1
and N Packages
TOP VIEW
ORDER CODE
NE5900DK
NE5900N
16
15
14
13
12
10
11
9
Product specification
5V
ANALOG OUT
TRI-STATE ENABLE
ENVELOPE
BIT 1
BIT 2
BIT 3
DATA VALID
853-0842 83667
NE5900
SOT162-1
SOT38-4
DWG #
SR01142

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ne5900n Summary of contents

Page 1

... SOL — Released in large SO package only. Figure 1. Pin Configuration APPLICATIONS Modems PBXs Security equipment Auto dialers Answering machines Remote diagnostics Pay telephones TEMPERATURE RANGE ORDER CODE 0 to +70 C NE5900DK 0 to +70 C NE5900N 1 Product specification NE5900 16 5V ANALOG OUT 15 TRI-STATE ENABLE 14 13 ENVELOPE BIT 1 12 BIT 2 ...

Page 2

Philips Semiconductors Call progress decoder BLOCK DIAGRAM INPUT FILTER EXT CLOCK IN/XTAL1 TIMING XTAL2 ABSOLUTE MAXIMUM RATINGS SYMBOL V Supply voltage DD V Logic control input voltages All other input voltages IN V Output voltages OUT T ...

Page 3

Philips Semiconductors Call progress decoder DC ELECTRICAL CHARACTERISTICS V = +3.3V unless otherwise stated SYMBOL SYMBOL PARAMETER PARAMETER V Power supply voltage DD Quiescent current Input threshold Signal rejection 2 Low frequency rejection 2 ...

Page 4

Philips Semiconductors Call progress decoder At the start of an in-band tone (envelope output goes high), a 2.3 second interval is timed out. Transitions of the envelope during this interval are counted to determine the signal present. At 2.3 seconds, ...

Page 5

Philips Semiconductors Call progress decoder 10nF 470k 1 2 10nF OPTIONAL CAPACITIVE INPUT IN1 100k 10nF A – C2 IN2 R2 100k 100k 10nF R3 100k 1986 May 8 TO EAR-PIECE 470k 3.58MHz IN Figure 4. Typical ...

Page 6

Philips Semiconductors Call progress decoder INPUT É É É É É É CLEAR É É É É É É ENVELOPE É É É É É É É É É É DATA VALID É É É É É É É É ...

Page 7

Philips Semiconductors Call progress decoder TYPICAL PERFORMANCE CHARACTERISTICS 3.0 2.5 2.0 1.5 1.0 0.5 0.0 3.0 3.5 4.0 4.5 5.0 SUPPLY VOLTAGE (V ) (Pin 16) DD Figure 7. Power Supply Current ...

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