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參數(shù)資料
| 型號： | 74F1240 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Octal inverter buffer 3-State |
| 中文描述： | 逆變器緩沖八路三態(tài) |
| 文件頁數(shù)： | 2/10頁 |
| 文件大?。?/td> | 85K |
| 代理商： | 74F1240 |
Philips Semiconductors
Product specification
74F1240,
74F1241
*
Buffers
74F1240
Octal inverter buffer (3-State)
2
1999 Jan 08
853–0039 20619
* Discontinued part. Please see the Discontinued Products List.
FEATURES
High impedance NPN base inputs for reduced loading
(20
μ
A in High and Low states)
Low power, light loading
Functional pin-for-pin equivalent of 74F240 and 74F241
1/30th the bus loading of 74F240 and 74F241
Provides ideal interface and increase fan-out of MOS
microprocessors
Octal bus interface
3-State buffer outputs sink 64mA
15mA source current
DESCRIPTION
The 74F1240 and 74F1241 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 device features two
Output Enables, OEa and OEb, each controlling four of the 3-State
outputs.
TYPE
TYPICAL
PROPAGATION
DELAY
TYPICAL
SUPPLY CURRENT
(TOTAL)
74F1240
3.5ns
40mA
74F1241
4.5ns
46mA
ORDERING INFORMATION
DESCRIPTION
COMMERCIAL RANGE
V
CC
= 5V
±
10%,
T
amb
= 0
°
C to +70
°
C
N74F1240N
DRAWING
NUMBER
20-pin plastic DIP
SOT146-1
20-pin plastic SOL
N74F1240D
SOT163-1
INPUT AND OUTPUT LOADING AND FAN OUT TABLE
PINS
DESCRIPTION
74F (U.L.)
HIGH/LOW
LOAD VALUE
HIGH/LOW
Ian, Ibn
Data inputs
1.0/0.033
20
μ
A/20
μ
A
20
μ
A/20
μ
A
20
μ
A/20
μ
A
OEa, OEb
Output enable inputs (active Low)
1.0/0.033
OEb
Output enable input (active High, 74F1241)
1.0/0.033
Yan, Ybn
Data outputs (74F1241)
750/106.7
15mA/64mA
Yan, Ybn
Data outputs (74F1240)
750/106.7
15mA/64mA
NOTE:
One (1.0) FAST unit load is defined as: 20
μ
A in the High state and 0.6mA in the Low state.
相關PDF資料 |
PDF描述 |
|---|---|
| 74F1241 | Octal inverter buffer 3-State |
| 74F1244 | Octal buffer 3-State |
| 74F1245 | Octal transceiver 3-State |
| 74F125D | 4-Bit Buffer/Driver |
| 74F125N | 4-Bit Buffer/Driver |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| 74F1240D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Dual 4-Bit Inverting Buffer/Driver |
| 74F1240N | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Dual 4-Bit Inverting Buffer/Driver |
| 74F1241 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Octal inverter buffer 3-State |
| 74F1244 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Octal buffer 3-State |
| 74F1245 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Octal transceiver 3-State |
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