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HEF40245B PDF даташит

Спецификация HEF40245B изготовлена ​​​​«NXP Semiconductors» и имеет функцию, называемую «Octal bus transceiver with 3-state outputs».

Детали детали

Номер произв HEF40245B
Описание Octal bus transceiver with 3-state outputs
Производители NXP Semiconductors
логотип NXP Semiconductors логотип 

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HEF40245B Даташит, Описание, Даташиты
INTEGRATED CIRCUITS
DATA SHEET
For a complete data sheet, please also download:
The IC04 LOCMOS HE4000B Logic
Family Specifications HEF, HEC
The IC04 LOCMOS HE4000B Logic
Package Outlines/Information HEF, HEC
HEF40245B
buffers
Octal bus transceiver with 3-state
outputs
Product specification
File under Integrated Circuits, IC04
January 1995









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HEF40245B Даташит, Описание, Даташиты
Philips Semiconductors
Octal bus transceiver with 3-state outputs
Product specification
HEF40245B
buffers
DESCRIPTION
The HEF40245B is an octal bus transmitter/receiver
designed for 8-line asynchronous, 2-way data
communication between data buses. It features output
stages with high current output capability suitable for
driving highly capacitive loads.
The direction input (DR) controls transmission of data from
bus A to bus B, or bus B to bus A, depending on its logic
level. The 3-state outputs are controlled by the enable
input EO. A HIGH on EO causes the outputs to assume a
high impedance OFF-state. The device also features
hysteresis on all inputs to improve noise immunity.
Schmitt-trigger action in the inputs makes the circuit highly
tolerant to slower input rise and fall times.
The HEF40245B is pin and functionally compatible with
the TTL ‘245’ device.
PINNING
A0 to A7
B0 to B7
DR
EO
data input/output
data input/output
direction input
output enable input (active LOW)
HEF40245BP(N): 20-lead DIL; plastic (SOT146-1)
HEF40245BD(F): 20-lead DIL; ceramic (cerdip) (SOT152)
HEF40245BT(D): 20-lead SO; plastic (SOT163-1)
( ): Package Designator North America
Fig.2 Logic diagram; for functional diagram see
Fig.3.
FAMILY DATA, IDD LIMITS category buffers
See Family Specifications.
Fig.1 Pinning diagram.
January 1995
2









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HEF40245B Даташит, Описание, Даташиты
Philips Semiconductors
Octal bus transceiver with 3-state outputs
Product specification
HEF40245B
buffers
FUNCTION TABLE
INPUTS
EO DR
LL
LH
HX
INPUTS/OUTPUTS
An
A=B
input
Z
Bn
input
B=A
Z
Notes
1. H = HIGH state (the more positive voltage)
L = LOW state (the less positive voltage)
X = state is immaterial
Z = high impedance OFF-state
(1) P-channel MOS transistor conducting.
(2) P-channel MOS transistor and bipolar
n-p-n transistor conducting.
Fig.4 Typical output source current characteristic.
Fig.3 Functional diagram.
January 1995
Fig.5 Schematic diagram of output stage.
3










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Номер в каталогеОписаниеПроизводители
HEF40245BOctal bus transceiver with 3-state outputsNXP Semiconductors
NXP Semiconductors

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