PT8A974P Pericom Semiconductor, PT8A974P Datasheet

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PT8A974P

Manufacturer Part Number
PT8A974P
Description
Manufacturer
Pericom Semiconductor
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
PT8A974P
Manufacturer:
PT
Quantity:
20 000
PT0090(09/02)
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Features
• The PT8A9701P works as the encoder and the
• Nine output pins, 5 for forward, backward, left,
• Operation power supply for PT8A9701: 3V to 12V
• Auto power-off if no key pressed (PT8A9701P)
• Motor current limit to meet toy safety standard
• Low operating current
• On-chip oscillator with an external resistor
• On-chip reversing amplifiers
• Built-in 3.7V Zener (Vz) (PT8A974P) and 3.1V
• Few external components needed
Block Diagram
Figure 1. Block Diagram of PT8A9701P
PT8A974P/974LP works as the decoder
right and turbo functions, and 3 functional keys
(with series resistor)
HD271 (PT8A974P/974LP)
Zener (Vz) (PT8A974LP)
Backward
Forward
OSCO
Turbo
F3/F4
OSCI
Right
Left
F1
F2
Oscillator
Circuit
Latch
Counters
Generator
1
Control
Timing
Logic
General Description
The PT8A9701P and PT8A974P/974LP is a pair of
CMOS LSIs designed for remote controlled toy car
application. They have eight control keys for
controlling the corresponding motion, i.e., forward,
backward, left, right, turbo and 3 functional keys, of
the remote controlled car. They also have ‘Forward
(Backward)’ and ‘Turbo’ combination application.
Ordering Information
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PT8A974P Summary of contents

Page 1

... F2 F3/F4 PT0090(09/02) 8-Function Remote Controller General Description The PT8A9701P and PT8A974P/974LP is a pair of CMOS LSIs designed for remote controlled toy car application. They have eight control keys for controlling the corresponding motion, i.e., forward, backward, left, right, turbo and 3 functional keys, of the remote controlled car. They also have ‘Forward (Backward)’ ...

Page 2

... Figure 2. Block Diagram of PT8A974P/974LP OSCI OSCO SI VI1 VI2 VT1 VT2 V CC Package and Pin Assignment PT8A9701P 16-Pin PDIP 1 Right GND 4 Backward 5 Forward 6 Turbo F3/F4 PT0090(09/02) Timing Oscillator Generator Decoding Amp Circuit VO1 VO2 VT Detector PT8A974P/974LP VO2 16 Left GND 15 F1 ...

Page 3

Pin Description Table 1. Pin Description of PT8A9701P ...

Page 4

... Table 2. Pin Description of PT8A974P/974LP ...

Page 5

... Functional Description In normal operation without ‘Turbo’, forward (backward) out- put pin of the decoder PT8A974P/974LP sends out a 60Hz signal. In operation with ‘Forward (Backward)’ and ‘Turbo’ combined, the output signal will be completely high. This func- tion is depicted in Table 3. Timing Diagram Data Format See Figure 4 ...

Page 6

... Supply Voltage to Ground Potential (Inputs & V Supply Voltage to Ground Potential (Outputs & D/O Only) ............................................................................... -0.5 to +5.5V DC Input Voltage ............................................................................................................................................... -0.5 to +5.5V DC Output Current ....................................................................................................................................................... 20mA Power Dissipation ...................................................................................................................................................... 500mW Maximum Ratings PT8A974P Storage Temperature ....................................................................................................................................... -25 Ambient Temperature with Power Applied ........................................................................................................ 0 Supply Voltage to Ground Potential (Inputs & V Supply Voltage to Ground Potential (Outputs & D/O Only) ............................................................................... -0.5 to +5.5V DC Input Voltage ...

Page 7

Recommended Operation Conditions Table 4. Recommended Operation Conditions ...

Page 8

... Table 6. DC Electrical Characteristics of PT8A974P/974LP ...

Page 9

... Notes: 1. These specifications apply for V = 3.5V and T CC 2.The frequency of standard samples is tested on standard testing-board. Table 8. AC Electrical Characteristics of PT8A974P/974LP ...

Page 10

Figure 5. Typical Application Circuit of PT8A9701P PT0090(09/02) 8-Function Remote Controller ...

Page 11

ANTENNA C5 C1 47P 3.3k C380 4.7uH 47P R12 180K 820 472 103 4.7uF 2.2k C7 104 C9 R10 470P 2. 2.2K 104 R11 2.2M ...

Page 12

Email: support@pti.com.cn China: No. 20 Building, 3/F, 481 Guiping Road, Shanghai, 200233, China Tel: (86)-21-6485 0576 Asia Pacific: Unit 1517, 15/F, Chevalier Commercial Centre, 8 Wang Hoi Rd, Kowloon Bay, Hongkong Tel: (852)-2243 3660 U.S.A.: 2380 Bering Drive, San ...

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