PT8A9781W datasheet, PDF - EEWORLD Datasheet

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PT8A9781W: DescriptionTelecom Circuit, CMOS, PDSO16,; CategoryWireless rf/communication Telecom circuit; File Size230KB，11 Pages; ManufacturerPericom Technology Inc

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PT8A9781W Overview

Telecom Circuit, CMOS, PDSO16,

PT8A9781W Parametric

Parameter Name	Attribute value
Maker	Pericom Technology Inc
package instruction	SOP, SOP16,.25
Reach Compliance Code	unknown
Is Samacsys	N
JESD-30 code	R-PDSO-G16
Number of terminals	16
Maximum operating temperature	40 °C
Minimum operating temperature	10 °C
Package body material	PLASTIC/EPOXY
encapsulated code	SOP
Encapsulate equivalent code	SOP16,.25
Package shape	RECTANGULAR
Package form	SMALL OUTLINE
power supply	1.2 V
Certification status	Not Qualified
Nominal supply voltage	1.2 V
surface mount	YES
technology	CMOS
Telecom integrated circuit types	TELECOM CIRCUIT
Temperature level	OTHER
Terminal form	GULL WING
Terminal pitch	1.27 mm
Terminal location	DUAL
Base Number Matches	1

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Data Sheet

PT8A977B/978B/978BL

5-Function Remote Controller

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Features

• PT8A977B works as encoder and PT8A978B/

978BL works as decoder

• Five pins for five control functions

• Operating power-supply voltage: 2.5V to 5.0V (978B),

2.0V to 5.0V (978BL), 1.8V to 5.0V(977B)

• Auto-power-off and oscillation-off if no press on

any button (977B)

• Press on any button to wake up (977B)

• One output pin used for external power control

(977B)

• On-chip oscillator with an external resistor

• On-chip reversing amplifiers (978B, 978BL)

• Low operating current

• Few external components needed

• Package: 14-pin DIP, 14-pin SOIC, 16-pin DIP

and 16-pin SOIC

General Description

The PT8A977B and PT8A978B (or 978BL) provide

complete control functions to the remote-controlled

toy. The PT8A977B has five input pins corresponding

with the five function buttons i.e, forward, backward,

rightward, leftward and turbo. The encoding circuit

in the PT8A977B sends digital codes to the two output

pins SO and SC. The digital codes correspond to the

definite function buttons or their combinations. The

SO and SC outputs are used in wireless and infra-red

applications respectively.

The PT8A978B (or 978BL) has five output pins

corresponding with the five actions. The received

signals are amplified by the three-stage amplifier, and

then the appropriate amplified signals are sampled,

fault-tolerantly checked and decoded to control the

actions of the remote-controlled toy.

Ordering Information

Part No.

PT8A977BP

PT8A977BW

PT8A977BDE

PT8A978BP

PT8A978BLW

PT8A978BDE

Package

14-pin DIP

14-pin SOIC

Die Form

16-pin DIP

16-pin SOIC

Die Form

There is an internal oscillator in the PT8A977B and

978B/978BL respectively. By adding an external

resistor conveniently, the oscillator will be

constructed. The oscillator frequency can be adjusted

by the external resistor. The relative error between

the frequencies of the two on-chip oscillators in the

PT8A977B and PT8A978B/978BL must be less than

±25%.

The auto-power-off function is achieved by an internal

counter (977B). The PC output is used to control on/

off state of the external power supply. Press on any

function button will wake up the chip promptly.

PT0085(02/04)

Ver:5

PT8A9781W Related Products

	PT8A9781W	PT8A977BW	PT8A978BP
Description	Telecom Circuit, CMOS, PDSO16,	Remote Control Transmitter IC, CMOS, PDSO14	Telecom Circuit, PDIP16,
Maker	Pericom Technology Inc	Pericom Technology Inc	Pericom Technology Inc
package instruction	SOP, SOP16,.25	SOP, SOP14,.25	DIP, DIP16,.3
Reach Compliance Code	unknown	unknown	unknown
JESD-30 code	R-PDSO-G16	R-PDSO-G14	R-PDIP-T16
Number of terminals	16	14	16
Maximum operating temperature	40 °C	70 °C	70 °C
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	SOP	SOP	DIP
Encapsulate equivalent code	SOP16,.25	SOP14,.25	DIP16,.3
Package shape	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	SMALL OUTLINE	SMALL OUTLINE	IN-LINE
power supply	1.2 V	4 V	4 V
Certification status	Not Qualified	Not Qualified	Not Qualified
surface mount	YES	YES	NO
Temperature level	OTHER	COMMERCIAL	COMMERCIAL
Terminal form	GULL WING	GULL WING	THROUGH-HOLE
Terminal pitch	1.27 mm	1.27 mm	2.54 mm
Terminal location	DUAL	DUAL	DUAL
Is Samacsys	N	N	-
Nominal supply voltage	1.2 V	-	4 V
technology	CMOS	CMOS	-
Telecom integrated circuit types	TELECOM CIRCUIT	-	TELECOM CIRCUIT
Base Number Matches	1	1	-

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