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HD74ACT298 PDF даташит

Спецификация HD74ACT298 изготовлена ​​​​«Hitachi Semiconductor» и имеет функцию, называемую «Quad 2-Input Multiplexer with Storage».

Детали детали

Номер произв HD74ACT298
Описание Quad 2-Input Multiplexer with Storage
Производители Hitachi Semiconductor
логотип Hitachi Semiconductor логотип 

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HD74ACT298 Даташит, Описание, Даташиты
HD74AC298/HD74ACT298
Quad 2-Input Multiplexer with Storage
Description
This device is a high-speed multiplexer with storage. It selects four bits of data from two sources (Ports)
under the control of a common Select input (S). The selected data is transferred to the 4-bit output register
synchronous with the HIGH-to-LOW transition of the Clock input (CP). The 4-bit register is fully edge
triggered. The Data inputs (I0 and I1) and Select input (S) must be stable only one setup time prior to the
HIGH-to-LOW transition of the clock for predictable operation.
Features
Outputs Source/Sink 24 mA
HD74ACT298 has TTL-Compatible Inputs
Pin Arrangement
I1b 1
I1a 2
I0a 3
I0b 4
I1c 5
I1d 6
I0d 7
GND 8
(Top view)
16 VCC
15 Qa
14 Qb
13 Qc
12 Qd
11 CP
10 S
9 I0c









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HD74ACT298 Даташит, Описание, Даташиты
HD74AC298/HD74ACT298
Logic Symbol
I0a I1a I0b I1b I0c I1c I0d I1d
S
CP
Qa Qb Qc Qd
Pin Names
I1a – I1d
I0a – I0d
S
CP
Qa – Qd
Source 1 Data Inputs
Source 0 Data Inputs
Select Input
Clock Pulse Input (Active Falling Edge)
Outputs
Function Table
Inputs
S
L
H
X
Cp
H
Outputs
Qa
a1
a2
QA0
Qb
b1
b2
QB0
Qc
c1
c2
QC0
Qd
d1
d2
QD0
2









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HD74ACT298 Даташит, Описание, Даташиты
Logic Diagram
I1a I0a
S
I1b I0b
HD74AC298/HD74ACT298
I1c I0c
I1d I0d
CP
R
CP
S Qa
R
CP
S Qb
R
CP
S Qc
R
CP
S Qd
Qa Qb Qc Qd
DC Characteristics (unless otherwise specified)
Item
Maximum quiescent supply current
Symbol Max
ICC 80
Unit
µA
Maximum quiescent supply current ICC 8.0 µA
Maximum ICC/input (HD74ACT298) ICCT
1.5
mA
Condition
VIN = VCC or ground, VCC = 5.5 V,
Ta = Worst case
VIN = VCC or ground, VCC = 5.5 V,
Ta = 25°C
VIN = VCC – 2.1 V, VCC = 5.5 V,
Ta = Worst case
AC Characteristics: HD74AC298
Item
Maximum count
frequency
Symbol
f max
VCC (V)*1
3.3
5.0
Ta = +25°C
CL = 50 pF
Min Typ
90 —
110 —
Propagation delay
CP to Q
t PLH
3.3
5.0
1.0 7.0
1.0 5.0
Propagation delay
CP to Q
t PHL
3.3
5.0
1.0 7.5
1.0 5.5
Note: 1. Voltage Range 3.3 is 3.3 V ± 0.3 V
Voltage Range 5.0 is 5.0 V ± 0.5 V
Max
10.0
7.5
10.0
7.5
Ta = –40°C to +85°C
CL = 50 pF
Min Max
70 —
100 —
1.0 11.5
1.0 8.5
1.0 11.5
1.0 8.5
Unit
MHz
ns
3










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Номер в каталогеОписаниеПроизводители
HD74ACT298Quad 2-Input Multiplexer with StorageHitachi Semiconductor
Hitachi Semiconductor

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