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HEF4794B PDF даташит

Спецификация HEF4794B изготовлена ​​​​«Philips» и имеет функцию, называемую «8-stage shift-and-store register LED driver».

Детали детали

Номер произв HEF4794B
Описание 8-stage shift-and-store register LED driver
Производители Philips
логотип Philips логотип 

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HEF4794B Даташит, Описание, Даташиты
INTEGRATED CIRCUITS
DATA SHEET
HEF4794B
8-stage shift-and-store register
LED driver
Product specification
Supersedes data of 1994 Jul 01
File under Integrated Circuits, IC04
1999 Jun 30









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HEF4794B Даташит, Описание, Даташиты
Philips Semiconductors
8-stage shift-and-store register LED driver
Product specification
HEF4794B
APPLICATIONS
Automotive
Industrial.
GENERAL DESCRIPTION
The HEF4794B is an 8-stage serial shift register having a
storage latch associated with each stage for strobing data
from the serial input to parallel LED driver outputs
O0 to O7. Data is shifted on positive-going clock
transitions. The data in each shift register stage is
transferred to the storage register when the strobe (STR)
input is HIGH. Data in the storage register appears at the
outputs whenever the output enable (EO) signal is HIGH.
Two serial outputs (OS and OS') are available for
cascading a number of HEF4794B devices. Data is
available at OS on positive-going clock edges to allow
high-speed operation in cascaded systems in which the
clock rise time is fast. The same serial information is
available at OS' on the next negative-going clock edge and
provides cascading HEF4794B devices when the clock
rise time is slow.
ORDERING INFORMATION
TYPE NUMBER
HEF4794BT
HEF4794BP
PINS
16
16
PACKAGES
PIN POSITION
MATERIAL
SO16
DIP16
plastic
plastic
CODE
SOT109-1
SOT38-1
FUNCTIONAL DIAGRAM
LOGIC DIAGRAMS
VDD
16
D2
CP 3
HEF4794B
8-STAGE SHIFT
REGISTER
STR 1
8-BIT STORAGE
REGISTER
10 O S'
9 OS
handbook, halfpaDge
CP
EO 15
OPEN-DRAIN OUTPUTS
8 4 5 6 7 14 13 12 11
VSS O0 O1 O2 O3 O4 O5 O6 O7
MBD909
O
MBD912
Fig.1 Functional diagram.
Fig.2 One D-latch.
1999 Jun 30
2









No Preview Available !

HEF4794B Даташит, Описание, Даташиты
Philips Semiconductors
8-stage shift-and-store register LED driver
Product specification
HEF4794B
handbook, full pagewidth
D
CP
STR
EO
STAGE 0
DO
CP
FF
1
STAGE 1 to 6
DO
STAGE 7
DO
CP
FF
8
DO
CP
latch
1
DO
CP
latch
8
DQ
CP
latch
OS
OS'
HEF4794B
O0 O1 O2 O3 O4 O5 O6
O7
Fig.3 Logic diagram.
MBD911
PINNING
SYMBOL
STR
D
CP
O0 to O3
VSS
OS,OS'
O7
O6
O5
O4
EO
VDD
PIN
1
2
3
4 to 7
8
9 and 10
11
12
13
14
15
16
DESCRIPTION
strobe input
data input
clock input
parallel outputs 0 to 3
(open drain)
ground
serial outputs
parallel output 7 (open drain)
parallel output 6 (open drain)
parallel output 5 (open drain)
parallel output 4 (open drain)
output enable input
supply voltage
handbook, halfpage
STR 1
D2
CP 3
O0 4
O1 5
O2 6
O3 7
VSS 8
16 VDD
15 EO
14 O4
HEF4794B
13 O5
12 O6
11 O7
10 O S'
9 OS
MBD910
Fig.4 Pin configuration.
1999 Jun 30
3










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