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74F298 반도체 회로 부품 판매점

Quad 2-input multiplexer with storage



Philips 로고
Philips
74F298 데이터시트, 핀배열, 회로
INTEGRATED CIRCUITS
74F298
Quad 2-input multiplexer with storage
Product specification
IC15 Data Handbook
1989 Aug 14
Philips
Semiconductors


74F298 데이터시트, 핀배열, 회로
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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74F298 multiplexer

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