Motorola MC145436ADW, MC145436AP Datasheet
MC145436AMOTOROLA
1
Advance Information
The MC145436A is a low–power and improved input sensitivity version of the
MC14LC5436.
The MC145436A is a silicon gate CMOS LSI device containing the filter and
decoder for detection of a pair of tones conforming to the DTMF standard with
outputs in hexadecimal. Switched capacitor filter technology is used together
with digital circuitry for the timing control and output circuits. The MC145436A
provides excellent power line noise and dial tone rejection and is suitable for
applications in central office equipment, P ABX, and keyphone systems, remote
control equipment and consumer telephony products.
The MC145436A offers the following performance features:
• Single + 5 V Power Supply
• Detects All 16 Standard Digits
• Uses Inexpensive 3.58 MHz Crystal
• Provides Guard Time Controls to Improve Speech Immunity
• Output in 4–Bit Hexadecimal Code
• Built–In 60 Hz and Dial Tone Rejection
• Pin Compatible with SSI–204, MC145436, and MC14LC5436
• Functional and Applicational Compatible with MC145436 and
MC14LC5436
This document contains information on a new product. Specifications and information herein are subject to change without notice.
Order this document
by MC145436A/D
SEMICONDUCTOR TECHNICAL DATA
DW SUFFIX
SOG PACKAGE
CASE 751G
ORDERING INFORMATION
MC145436AP Plastic DIP
MC145436ADW SOG Package
P SUFFIX
PLASTIC DIP
CASE 646
PIN ASSIGNMENTS
NC = NO CONNECTION
PDIP
11
12
13
14
8
9
105
4
3
2
1
7
6
X
in
ATB
DV
D8
D4
GND
X
out
V
DD
ENB
D1
D2
A
in
X
en
GT
13
14
15
16
9
10
11
125
4
3
2
1
8
7
6
ATB
NC
DV
D8
D4
GND
X
out
X
in
V
DD
ENB
D1
D2
A
in
X
en
GT
NC
SOG
16
1
14
1
Motorola, Inc. 1996
REV 1
1/96
MC145436A MOTOROLA
2
BLOCK DIAGRAM
A
in
60 Hz
REJECTION
FILTER
PREAMP
BS1
BS2
697
770
852
941
1209
1336
1477
1633
TIMING
CIRCUIT
OUTPUT
DECODER
VOLTAGE
REF
OUTPUT
REGISTER
ENB
D1
D2
D4
D8
CHIP
CLOCKS
CLOCK
GEN
÷
8
ATB
X
en
X
in
X
out
GT
DV
MC145436AMOTOROLA
3
MAXIMUM RATINGS (Voltages Referenced to GND Unless Otherwise Noted)
Rating
Symbol Value Unit
DC Supply Voltage V
DD
– 0.5 to + 6.0 V
Input Voltage, Any Pin Except A
in
V
in
– 0.5 to VDD + 0.5 V
Input Voltage, A
in
V
in
VDD – 10 to VDD + 0.5 V
DC Current Drain per Pin I ± 10 mA
Power Dissipation P
D
100
mW
Operating Temperature Range T
A
– 40 to + 85 °C
Storage Temperature Range T
stg
– 65 to + 150 °C
ELECTRICAL CHARACTERISTICS
(All Polarities Referenced to VSS = 0 V, VDD = 5.0 V ± 10%, TA = – 40 to + 85°C, Unless Otherwise Noted)
Parameter
Symbol Min Typ Max Unit
DC Supply Voltage V
DD
4.5 5 5.5 V
Supply Current (f
CLK
= 3.58 MHz) I
DD
— 5 8 mA
Input Current GT
ENB, Xin, X
en
I
in
—
—
—
—
450
± 1
µA
Input Voltage Low ENB, GT, X
en
V
IL
— — 1.5 V
Input Voltage High ENB, GT, X
en
V
IH
3.5 — — V
I
out
Data and DV Pins: V
out
= 4.5 V (Source) I
OH
800 — — µA
I
out
Data and DV Pins: V
out
= 0.4 V (Sink) I
OL
1.0 — — mA
Input Impedance A
in
R
in
90 100 — kΩ
Fanout ATB F
out
— — 10
Input Capacitance Xen, ENB C
in
— 6 — pF
ANALOG CHARACTERISTICS (V
DD
= 5.0 V ± 10%, TA = – 40 to + 85°C, Unless Otherwise Noted)
Parameter
Min Typ Max Unit
Signal Level for Detection (Ain) – 35 — – 2 dBm
Twist = High Tone/Low Tone – 10 — 10 dB
Frequency Detect Bandwidth ± (1.5 + 2 Hz) ± 2.5 ± 3.5 % f
O
60 Hz Tolerance — — 0.8 Vrms
Dial Tone Tolerance (Note 1)
(Dial Tone 330 + 440)
— — 0 dB
Noise Tolerance (Notes 1 and 2) — — – 12 dB
Power Supply Noise (Wide Band) — — 10 mV p–p
Talk Off (Mitel Tape #CM7290) — 2 — Hits
NOTES:
1. Referenced to lower amplitude tone.
2. Bandwidth limited (0 to 3.4 kHz) Gaussian Noise.
This device contains circuitry to protect the
inputs against damage due to high static voltages or electric fields; however, it is advised that
normal precautions be taken to avoid applications of any voltage higher than the maximum
rated voltages to this high impedance circuit.
For proper operation it is recommended that
Vin and V
out
be constrained to the range VSS ≤
(Vin or V
out
) ≤ VDD. Reliability of operation is
enhanced if unused inputs are tied to and
appropriate logic voltage level (e.g., either V
SS
or VDD).
Loading...