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74ALS240A PDF даташит

Спецификация 74ALS240A изготовлена ​​​​«NXP Semiconductors» и имеет функцию, называемую «Octal inverter buffer 3-State».

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Номер произв 74ALS240A
Описание Octal inverter buffer 3-State
Производители NXP Semiconductors
логотип NXP Semiconductors логотип 

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74ALS240A Даташит, Описание, Даташиты
INTEGRATED CIRCUITS
74ALS240A/74ALS240A–1
Octal inverter buffer (3–State)
Product specification
IC05 Data Handbook
1991 Feb 08
Philips
Semiconductors









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74ALS240A Даташит, Описание, Даташиты
Philips Semiconductors
Octal inverter buffer (3-State)
Product specification
74ALS240A/
74ALS240A-1
FEATURES
Octal bus interface
3-State buffer outputs sink 24mA and source 15mA
The -1 version sinks 48 mA
DESCRIPTION
The 74ALS240A is an octal buffer that is ideal for driving bus lines or
buffer memory address registers. The outputs are all capable of
sinking 24mA 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.
The 74ALS240A-1 sinks 48 mA IOL if the VCC is limited to
5.0V ±0.25V.
PIN CONFIGURATION
OEa 1
Ia0 2
Yb0 3
Ia1 4
Yb1 5
Ia2 6
Yb2 7
Ia3 8
Yb3 9
GND 10
20 VCC
19 OEb
18 Ya0
17 Ib0
16 Ya1
15 Ib1
14 Ya2
13 Ib2
12 Ya3
11 Ib3
SF00320
TYPE
74ALS240A
74ALS240A-1
TYPICAL
PROPAGATION
DELAY
4.5ns
4.5ns
TYPICAL
SUPPLY CURRENT
(TOTAL)
15mA
15mA
ORDERING INFORMATION
ORDER CODE
DESCRIPTION
COMMERCIAL RANGE
VCC = 5V ±10%,
Tamb = 0°C to +70°C
20-pin plastic DIP
74ALS240AN,
74ALS240A-1N
20-pin plastic SOL
74ALS240AD,
74ALS240A-1D
20-pin plastic SSOP
Type II
74ALS240ADB,
74ALS240A-1DB
DRAWING
NUMBER
SOT146-1
SOT163-1
SOT339-1
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS
DESCRIPTION
74ALS (U.L.)
HIGH/LOW
Ian, Ibn
Data inputs
1.0/1.0
OEa, OEb
Output Enable inputs (active-Low)
1.0/1.0
Yan, Ybn
Data outputs
750/240
Yan, Ybn
Data outputs (-1 version)
750/480
NOTE: One (1.0) ALS unit load is defined as: 20µA in the High state and 0.1mA in the Low state.
LOGIC SYMBOL
IEC/IEEE SYMBOL
LOAD VALUE
HIGH/LOW
20µA/0.1mA
20µA/0.1mA
15mA/24mA
15mA/48mA
2 4 6 8 17 15 13 11
Ia0 Ia1 Ia2 Ia3 Ib0 Ib1 Ib2 Ib3
1 OEa
19 OEb
Ya0 Ya1 Ya2 Ya3 Yb0 Yb1 Yb2 Yb3
VCC = Pin 20
GND = Pin 10
18 16 14 12 3 5 7 9
SF00321
1 EN1
19
EN2
2 2D 1
4
6
8
17 2
15
13
11
18
16
14
12
3
5
7
9
SF00322
1991 Feb 08
2 853–1244 01670









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74ALS240A Даташит, Описание, Даташиты
Philips Semiconductors
Octal inverter buffer (3-State)
Product specification
74ALS240A/
74ALS240A-1
LOGIC DIAGRAM
2
Ia0
18
Ya0
17
Ib0
4
Ia1
16
Ya1
15
Ib1
6
Ia2
8
Ia3
14
Ya2
12
Ya3
13
Ib2
11
Ib3
OEa 1
OEb 10
VCC = Pin 20
GND = Pin 10
3
Yb0
5
Yb1
7
Yb2
9
Yb3
FUNCTION TABLE
INPUTS
OEa Ia OEb
LLL
LHL
HXH
H = High voltage level
L = Low voltage level
X = Don’t care
Z = High impedance “off” state
Ib
L
H
X
OUTPUTS
Ya Yb
HH
LL
ZZ
SF00323
ABSOLUTE MAXIMUM RATINGS
(Operation beyond the limit set forth in this table may impair the useful life of the device.
Unless otherwise noted these limits are over the operating free air temperature range.)
SYMBOL
PARAMETER
VCC
VIN
IIN
VOUT
IOUT
Supply voltage
Input voltage
Input current
Voltage applied to output in High output state
Current applied to output in Low output state
All versions
-1 version
Tamb
Tstg
Operating free-air temperature range
Storage temperature range
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
VCC Supply voltage
VIH High-level input voltage
VIL Low-level input voltage
IIK Input clamp current
IOH High-level output current
IOL Low-level output current
Tamb
Operating free-air temperature range
NOTE:
1. The 48mA limit applies only under the condition of VCC = 5.0V ±5%.
All versions
-1 version
RATING
–0.5 to +7.0
–0.5 to +7.0
–30 to +5
–0.5 to VCC
48
96
0 to +70
–65 to +150
UNIT
V
V
mA
V
mA
mA
°C
°C
LIMITS
MIN NOM MAX
4.5 5.0 5.5
2.0
0.8
–18
–15
24
48 1
0 +70
UNIT
V
V
V
mA
mA
mA
mA
°C
1991 Feb 08
3










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Номер в каталогеОписаниеПроизводители
74ALS240AOctal inverter buffer 3-StateNXP Semiconductors
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74ALS240A-1Octal inverter buffer 3-StateNXP Semiconductors
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74ALS240A-1DOctal inverter buffer 3-StateNXP Semiconductors
NXP Semiconductors
74ALS240A-1DBOctal inverter buffer 3-StateNXP Semiconductors
NXP Semiconductors

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