DP8226M

更新时间： 2024-10-31 23:47:55

品牌	Logo	应用领域
美国国家半导体 - NSC		/
页数	文件大小	规格书
6页	120K
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数据手册

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DP8226M 数据手册

June 1990

DP8216/DP8216M/DP8226/DP8226M

4-Bit Bidirectional Bus Transceivers

General Description

The DP8216/DP8216M and DP8226/DP8226M are 4-bit bi-

directional bus drivers to use in bus oriented applications.

The non-inverting DP8216/DP8216M and inverting

DP8226/DP8226M drivers are provided for flexibility in sys-

tem design.

The DIEN input controls the direction of data flow, which is

accomplished by forcing one of the pair of buffers into its

high-impedance state and allowing the other to transmit its

data. A simple two-gate circuit is used for this function.

Features

Each buffered line of the four-bit drivers consists of two

separate buffers that are TRI-STATE to achieve direct bus

Data bus buffer driver to 8080 type CPUs

interface and bidirectional capability. On one side of the

driver the output of one buffer and the input of another are

tied together (DB); this side is used to interface to the sys-

tem side components such as memories, I/O, etc., because

its interface is TTL compatible and it has high driver (50

mA). On the other side of the driver the inputs and outputs

are separated to provide maximum flexibility. Of course,

they can be tied together so that the driver can be used to

buffer a true bidirectional bus. The DO outputs on this side

of the driver have a special high voltage output drive capa-

bility so that direct interface to the 8080 type CPUs is

achieved with an adequate amount of noise immunity.

Low input load currentÐ0.25 mA maximum

High output drive capability for driving system data

busÐ50 mA at 0.5V

Power up-down protection

DP8216/DP8216M have non-inverting outputs

DP8226/DP8226M have inverting outputs

Output high voltage compatible with direct interface to

MOS

TRI-STATE outputs

Advanced Schottky processing

Available in military and commercial temperature

The CS input is a device enable. When it is ‘‘high’’ the out-

put drivers are all forced to their high-impedance state.

When it is a ‘‘low’’ the device is enabled and the direction of

the data flow is determined by the DIEN input.

Logic Diagrams

DP8216/DP8216M

DP8226/DP8226M

TL/F/8753–1

TL/F/8753–2

TRI-STATEÉ is a registered trademark of National Semiconductor Corp.

1995 National Semiconductor Corporation

TL/F/8753

RRD-B30M105/Printed in U. S. A.

12 3 4 5 6

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与DP8226M相关器件

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DP8226MJ	NSC	获取价格	4-Bit Bidirectional Bus Transceivers
DP8226MJ/A+	ETC	获取价格	4-Bit Bus Transceiver
DP8226N	NSC	获取价格	4-Bit Bidirectional Bus Transceivers
DP8226N/A+	NSC	获取价格	IC,BUS TRANSCEIVER,SINGLE,4-BIT,AS-TTL,DIP,16PIN,PLASTIC
DP8228	NSC	获取价格	System Controller and Bus Driver
DP8228J	NSC	获取价格	System Controller and Bus Driver
DP8228J/A+	ETC	获取价格	System Controller
DP8228M	NSC	获取价格
DP8228MJ	NSC	获取价格	System Controller and Bus Driver
DP8228MJ/883	NSC	获取价格	IC,SYSTEM CONTROLLER,BIPOLAR,DIP,28PIN