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N74F298D PDF даташит

Спецификация N74F298D изготовлена ​​​​«Philips» и имеет функцию, называемую «Quad 2-input multiplexer with storage».

Детали детали

Номер произв N74F298D
Описание Quad 2-input multiplexer with storage
Производители Philips
логотип Philips логотип 

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N74F298D Даташит, Описание, Даташиты
INTEGRATED CIRCUITS
74F298
Quad 2-input multiplexer with storage
Product specification
IC15 Data Handbook
1989 Aug 14
Philips
Semiconductors









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N74F298D Даташит, Описание, Даташиты
Philips Semiconductors
Quad 2-input multiplexer with storage
Product specification
74F298
FEATURES
Fully synchronous operation
Select from two data sources
Buffered, negative edge triggered clock
Provides the equivalent of function capabilities of two separate
MSI functions (74F157 and 74F175)
DESCRIPTION
The 74F298 is a high speed Quad 2-Input Multiplexer with storage.
It selects 4 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 (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.
PIN CONFIGURATION
I1b 1
I1a 2
I0a 3
I0b 4
I1c 5
I1d 6
I0d 7
GND 8
16 VCC
15 Qa
14 Qb
13 Qc
12 Qd
11 CP
10 S
9 I0c
SF00859
TYPE
74F298
TYPICAL fMAX
115MHz
TYPICAL
SUPPLY CURRENT
(TOTAL)
30mA
ORDERING INFORMATION
ORDER CODE
DESCRIPTION
16-pin plastic DIP
COMMERCIAL RANGE
VCC = 5V ±10%,
Tamb = 0°C to +70°C
N74F298N
16-pin plastic SO
N74F298D
PKG DWG #
SOT38-4
SOT109-1
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS
DESCRIPTION
74F (U.L.) HIGH/LOW
I0a, I0b, I0c, I0d
Data inputs
1.0/1.0
I1a, I1b, I1c, I1d
Data inputs
1.0/1.0
S Select input
1.0/1.0
CP Clock input (active falling edge)
1.0/1.0
Qa, Qb, Qc, Qd
Data outputs
50/33
NOTE:
One (1.0) FAST unit load is defined as: 20µA in the High state and 0.6mA in the Low state.
LOAD VALUE HIGH/LOW
20µA/0.6mA
20µA/0.6mA
20µA/0.6mA
20µA/0.6mA
1.0mA/20mA
LOGIC SYMBOL
LOGIC SYMBOL (IEEE/IEC)
32419576
11
C1
10 M2
I0a I1a I0b I1b I0c I1c I0d I1d
10 S
11 CP
Qa Qb Qc Qd
VCC = Pin 16
GND = Pin 8
15 14 13 12
SF00860
3
2, 1D
2
2, 1D
4
1
9
5
7
6
15
14
13
12
SF00861
1989 Aug 14
2 853–0061 97377









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N74F298D Даташит, Описание, Даташиты
Philips Semiconductors
Quad 2-input multiplexer with storage
Product specification
74F298
LOGIC DIAGRAM
S 10
I1a I0a
23
I1b I0b
14
I1c I0c
59
I1d
6
I0d
7
CP 11
VCC = Pin 16
GND = Pin 8
R
CP
S Qa
15
Qa
R
CP
S Qb
14
Qb
R
CP
S Qc
13
Qc
R
CP
S Qd
12
Qd
SF00862
FUNCTION TABLE
INPUTS
OUTPUT
OPERATING MODE
CP S I0n I1n
Qn
l
lX
l hX
L
H
Load source “0”
H=
h=
L=
l=
X=
=
hX l
hXh
L
H
Load source “1”
High voltage level
High voltage level one setup time prior to the High-to-Low
clock transition
Low voltage level
Low voltage level one setup time prior to the High-to-Low
clock transition
Don’t care
High-to-Low clock transition
ABSOLUTE MAXIMUM RATINGS
(Operation beyond the limits set forth in this table may impair the useful life of the device.
Unless otherwise noted these limits are over the operating free-air temperature range.)
SYMBOL
PARAMETER
VCC
VIN
IIN
VOUT
IOUT
Tamb
Tstg
Supply voltage
Input voltage
Input current
Voltage applied to output in High output state
Current applied to output in Low output state
Operating free-air temperature range
Storage temperature range
RATING
–0.5 to +7.0
–0.5 to +7.0
–30 to +5
–0.5 to VCC
40
0 to +70
–65 to +150
UNIT
V
V
mA
V
mA
°C
°C
1989 Aug 14
3










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