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參數(shù)資料
| 型號(hào)： | 933784270623 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 總線收發(fā)器 |
| 英文描述： | F/FAST SERIES, OCTAL 1-BIT DRIVER, TRUE OUTPUT, PDSO20 |
| 封裝： | PLASTIC, SOL-20 |
| 文件頁(yè)數(shù)： | 3/10頁(yè) |
| 文件大?。?/td> | 94K |
| 代理商： | 933784270623 |
Philips Semiconductors
Product specification
74F540, 74F541
Buffers
74F540 Octal Inverter Buffer (3-State)
74F541 Octal Buffer (3-State)
2
1990 Jan 08
853–0068 98494
FEATURES
High impedance NPN base inputs for reduced loading
(20
A in High and Low states)
Low power, light bus loading
Functionally similar to the 74F240 and 74F241
Provides ideal interface and increases fan-out of MOS
microprocessors
Efficient pinout to facilitate PC board layout
Octal bus interface
3-State buffer outputs sink 64mA
15mA source current
DESCRIPTION
The 74F540 and 74F541 are octal buffers that are ideal for driving
bus lines or buffer memory address registers. The outputs are
capable of sinking 64mA and sourcing up to 15mA, producing very
good capacitive drive characteristics. The devices feature input and
outputs on opposite sides of the package to facilitate printed circuit
board layout.
TYPE
TYPICAL
PROPAGATION DELAY
TYPICAL SUPPLY
CURRENT
(TOTAL)
74F540
3.5ns
58mA
74F541
5.5ns
55mA
ORDERING INFORMATION
DESCRIPTION
COMMERCIAL RANGE
VCC = 5V ±10%,
Tamb = 0°C to +70°C
PKG DWG #
20-Pin Plastic DIP
N74F540, N74F541N
SOT146-1
20-Pin Plastic SOL
N74F540D, N74F541D
SOT163-1
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS
DESCRIPTION
74F(U.L.)
HIGH/LOW
LOAD VALUE
HIGH/LOW
I0–I7
Data inputs
1.0/0.033
20
A/20A
OE0, OE1
3-State output enable inputs (active Low)
1.0/0.033
20
A/20A
Y0 - Y7
Data outputs (74F541)
750/106.7
15mA/64mA
Y0 - Y7
Data outputs (74F540)
750/106.7
15mA/64mA
NOTE: One (1.0) FAST Unit Load is defined as: 20
A in the High state and 0.6mA in the Low state.
PIN CONFIGURATION – 74F540
20
19
18
17
16
15
14
13
12
10
11
9
8
7
6
5
4
3
2
1
VCC
OE1
Y0
Y1
Y4
Y5
Y6
Y7
OE0
I0
I1
I4
I5
I6
I7
GND
Y2
Y3
I3
I2
SF01060
PIN CONFIGURATION – 74F541
20
19
18
17
16
15
14
13
12
10
11
9
8
7
6
5
4
3
2
1
VCC
OE1
Y0
Y1
Y4
Y5
Y6
Y7
OE0
I0
I1
I4
I5
I6
I7
GND
Y2
Y3
I3
I2
SF01021
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