HT9032
Calling Line Identification Receiver
Features
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Operating voltage: 3.5V~5.5V
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Bell 202 FSK and V.23 demodulation
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Ring detection input and output
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Carrier detection output
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Power down mode
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High input sensitivity
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HT9032C: 16-pin DIP/SOP package
HT9032D: 8-pin DIP/SOP package
Applications
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Feature phones
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Caller ID adjunct boxes
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Fax and answering machines
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Computer telephony interface products
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ADSI products
General Description
The HT9032 calling line identification receiver is a low
power CMOS integrated circuit designed for receiving
physical layer signals transmitted according to Bellcore
TR-NWT-000030 and ITU-T V.23 specifications. The
primary application of this device is for products used to
receive and display the calling number, or message
waiting indicator sent to subscribers from the central of-
fice facilities. The device also provides a carrier detec-
tion circuit and a ring detection circuit for easier system
applications.
Block Diagram
T IP
R IN G
B a n d P a s s
. ilte r
D e m o d u la to r
P D W N
V a lid D a ta
D e te c tio n
P o w e r U p
L o g ic
D O U T C
D O U T
C D E T
R T IM E
In te rn a l
P o w e r U p
L o g ic
R D E T 1
R D E T
R D E T 2
R in g
A n a ly s is
C ir c u it
V D D
V S S
R e fe re n c e
V o lta g e
C lo c k
G e n e ra to r
X 1
X 2
Rev. 1.30
1
November 19, 2001