1562

NTE1562
Integrated Circuit
Programmable Search System
for Audio Cassette
Description:
The NTE1562 is a monolithic integrated circuit consisting of a program selector capable of automatic
item selection with memory for 3 programs. The detection section is provided with protection from
misoperation due to noise. Consideration has been given as well to prevention of misoperation when
power is applied. The memory section is provided with LED driving outputs, enabling a display of the
program selection status.
Features:
D Built−in Protective Circuit for Overcurrent
D Detection Operation can be Stopped by External Input
D Provided with a Resetting Function for the Power Supply Switching On
D Wide Range of the Working Power Supply Voltage (4.5V to 14V)
Applications:
D Tape Decks
D Radio Cassette Tape Recorders
D Music Centers
D Accompaniment Music Players
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14V
Power Dissipation (Note 1), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 540mW
Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −25° to +75°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −50° to +125°C
Note 1. Derating is done at 5.4mW/°C for operation above TA = +25°C.
Electrical Characteristics: (TA = +25°C, VCC = 9V unless otherwise specified)
Parameter
Symbol
Test Conditions
Quiescent Current
IQ
Input Discriminating Voltage
VIN
f = 10kHz, Cf = 1µF
Input Current
IIN
VIN = 0V
Min
Typ
Max
Unit
−
10
25
mA
−55
−52
−49
dBm
−
0.2
2.0
µA
High−Level Output Voltage
VOH
I1 = 40mA
6.0
7.0
−
V
Low−Level Output Voltage
VOL
I2 = 1.0mA
−
0.3
0.5
V
Electrical Characteristics (Cont’d): (TA = +25°C, VCC = 9V unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
−
120
−
mA
Output Limiting Current
ILIM
Blank Section Detection Timing
TD
RD = 220kΩ, CD = 0.47µF
55
75
95
ms
Output Pulsewidth
TW
RW = 220kΩ, CD = 0.47µF
55
75
95
ms
Item Detection Time
TC
RD = 220kΩ, CD = 2.2µF
30
75
130
ms
Pin 15 Threshold Voltage
V15TH
0.8
1.3
1.8
V
Pin 16 Threshold Voltage
V16TH
0.4
0.65
0.9
V
ILED
7
10
−
mA
LED Drive Current
Pin Connection Diagram
Input
1
16
Reset
Bias
2
15
Set
Mute
3
14
LED1
Filter
4
13
LED2
Start
5
12
LED3
GND
6
11
N.C.
Pulse
7
10
GND
Output
8
9
VCC
16
9
.260 (6.6) Max
1
8
.300
(7.62)
.785 (19.9)
Max
.200 (5.08)
Max
.245
(6.22)
Min
.100 (2.54)
.700 (17.7)