參數(shù)資料
型號: 933768950602
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, INVERTED OUTPUT, PDIP20
封裝: 0.300 INCH, PLASTIC, SOT-146-1, DIP-20
文件頁數(shù): 3/10頁
文件大?。?/td> 79K
代理商: 933768950602
Philips Semiconductors
Product specification
74F1240
Octal inverter buffer (3-State)
2
2000 Jun 30
853–0039 24025
FEATURES
High impedance NPN base inputs for reduced loading
(20
A in High and Low states)
Low power, light loading
Functional pin-for-pin equivalent of 74F240
1/30th the bus loading of 74F240
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 is an octal buffer that is 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
ORDERING INFORMATION
DESCRIPTION
COMMERCIAL RANGE
VCC = 5V ±10%,
Tamb = 0°C to +70°C
DRAWING
NUMBER
20-pin plastic DIP
N74F1240N
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
A/20A
OEa, OEb
Output enable inputs (active Low)
1.0/0.033
20
A/20A
Yan, Ybn
Data outputs (74F1240)
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.
相關PDF資料
PDF描述
933811660623 F/FAST SERIES, OCTAL 1-BIT DRIVER, INVERTED OUTPUT, PDSO20
933769260602 F/FAST SERIES, DUAL 6-INPUT AND-OR-INVERT GATE, PDIP14
933784180602 F/FAST SERIES, DUAL 6-INPUT AND-OR-INVERT GATE, PDSO14
933769310602 F/FAST SERIES, OCTAL 1-BIT DRIVER, TRUE OUTPUT, PDIP20
933784270602 F/FAST SERIES, OCTAL 1-BIT DRIVER, TRUE OUTPUT, PDSO20
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