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參數(shù)資料
| 型號(hào)： | 74F298 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Quad 2-input multiplexer with storage(帶存儲(chǔ)的四2輸入多路復(fù)用器) |
| 中文描述： | 四2與存儲(chǔ)（帶存儲(chǔ)的四2輸入多路復(fù)用器輸入多路復(fù)用器） |
| 文件頁數(shù)： | 2/8頁 |
| 文件大小： | 78K |
| 代理商： | 74F298 |
Philips Semiconductors
Product specification
74F298
Quad 2-input multiplexer with storage
2
1989 Aug 14
853–0061 97377
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
16
15
14
13
12
11
10
7
6
5
4
3
2
1
I0d
V
CC
Qd
CP
S
Qc
Qa
Qb
I1b
I1a
I1d
I0a
I0b
I1c
9
8
GND
I0c
SF00859
TYPE
TYPICAL f
MAX
TYPICAL
SUPPLY CURRENT
(TOTAL)
74F298
115MHz
30mA
ORDERING INFORMATION
ORDER CODE
DESCRIPTION
COMMERCIAL RANGE
V
CC
= 5V
±
10%,
T
amb
= 0
°
C to +70
°
C
PKG DWG #
16-pin plastic DIP
N74F298N
SOT38-4
16-pin plastic SO
N74F298D
SOT109-1
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS
DESCRIPTION
74F (U.L.) HIGH/LOW
LOAD VALUE HIGH/LOW
I0a, I0b, I0c, I0d
Data inputs
1.0/1.0
20
μ
A/0.6mA
20
μ
A/0.6mA
20
μ
A/0.6mA
20
μ
A/0.6mA
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
NOTE:
One (1.0) FAST unit load is defined as: 20
μ
A in the High state and 0.6mA in the Low state.
Data outputs
50/33
1.0mA/20mA
LOGIC SYMBOL
V
= Pin 16
GND = Pin 8
SF00860
10
11
S
CP
3
2
4
1
9
5
7
I0a
I1a
I0b
I1b
I0c
I1c
I0d
Qa
Qb
Qc
Qd
15
14
13
12
6
I1d
LOGIC SYMBOL (IEEE/IEC)
SF00861
3
2, 1D
11
C1
10
M2
2
15
2, 1D
4
1
14
9
5
13
7
6
12
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74F298D | 制造商:North American Philips Discrete Products Div 功能描述:74F298D |
| 74F298N | 制造商:North American Philips Discrete Products Div 功能描述:LOGIC MUX, QUAD, 2-INPUT, F-TTL, 16 Pin, Plastic, DIP |
| 74F298PC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:2-Input Digital Multiplexer |
| 74F298QC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:2-Input Digital Multiplexer |
| 74F298SC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:2-Input Digital Multiplexer |
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