DataSheet26.com

74F2244 PDF даташит

Спецификация 74F2244 изготовлена ​​​​«Philips» и имеет функцию, называемую «Octal buffer with 30ohm equivalent output termination 3-State».

Детали детали

Номер произв 74F2244
Описание Octal buffer with 30ohm equivalent output termination 3-State
Производители Philips
логотип Philips логотип 

10 Pages
scroll

No Preview Available !

74F2244 Даташит, Описание, Даташиты
INTEGRATED CIRCUITS
74F2244
Octal buffer with 30equivalent output
termination (3-State)
Product specification
IC15 Data Handbook
1994 Dec 5
Philips Semiconductors









No Preview Available !

74F2244 Даташит, Описание, Даташиты
Philips Semiconductors
Octal buffer with 30equivalent output termination
(3-State)
Product specification
74F2244
FEATURES
Octal bus interface
30output termination ideal for driving DRAM
15mA source current
SSOP Type II Package
DESCRIPTION
The 74F2244 is an octal buffer that is ideal for driving dynamic
DRAM with matching impedance. The outputs are all capable of
sinking 5mA and sourcing up to 15mA. The device features two
output enables, OEa and OEb, each controlling four of the 3–state
outputs.
TYPE
74F2244
TYPICAL
PROPAGATION
DELAY
4.0ns
TYPICAL
SUPPLY CURRENT
(TOTAL)
30mA
ORDERING INFORMATION
DESCRIPTION
20-pin plastic DIP
20-pin plastic SOL
20-pin plastic SSOP Type II
ORDER CODE
COMMERCIAL RANGE
VCC = 5V ±10%, Tamb = 0°C to +70°C
N74F2244N
N74F2244D
N74F2244DB
DRAWING NUMBER
SOT146-1
SOT163-1
SOT339-1
INPUT AND OUTPUT LOADING AND FAN OUT TABLE
PINS
Ian, Ibn
Data inputs
DESCRIPTION
74F (U.L.)
HIGH/LOW
1.0/0.33
OEa, OEb
Output enable inputs (active low)
1.0/0.33
Yan, Ybn
Data outputs
750/8.33
NOTE: One (1.0) FAST unit load is defined as: 20µA in the high state and 0.6mA in the low state.
LOAD VALUE
HIGH/LOW
20µA/0.2mA
20µA/0.2mA
15mA/5mA
PIN CONFIGURATION
LOGIC SYMBOL
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
SF00227
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
SF00228
1994 Dec 05
2 853-1525 14380









No Preview Available !

74F2244 Даташит, Описание, Даташиты
Philips Semiconductors
Octal buffer with 30equivalent output termination
(3-State)
Product specification
74F2244
IEC/IEEE SYMBOL
1 EN1
19 EN2
2 2D
4
6
8
17
15
13
11
1
2
FUNCTION TABLE
INPUTS
OEa Ia OEb
LLL
LHL
HXH
Notes to function table
H = High voltage level
L = Low voltage level
X = Don’t care
Z = High impedance ”off” state
Ib
L
H
X
18
16
14
12
3
5
7
9
SF00229
OUTPUTS
Ya Yb
LL
HH
ZZ
LOGIC DIAGRAM
Ia0 2
Ia1 4
Ia2 6
Ia3 8
OEa 1
VCC = Pin 20
GND = Pin 10
18 Ya0
Ib0 17
16 Ya1
Ib1 15
14 Ya2
Ib2 13
12 Ya3
Ib3 11
OEb 10
2 Yb0
5 Yb1
7 Yb2
9 Yb3
SF00236
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
RATING
UNIT
VCC
VIN
IIN
VOUT
Supply voltage
Input voltage
Input current
Voltage applied to output in high output state
–0.5 to +7.0
–0.5 to +7.0
–30 to +5
–0.5 to VCC
V
V
mA
V
IOUT
Current applied to output in low output state
10 mA
Tamb
Tstg
Operating free air temperature range
Storage temperature range
0 to +70
–65 to +150
°C
°C
RECOMMENDED OPERATING CONDITIONS
SYMBOL
VCC
VIH
VIL
IIk
IOH
IOL
Tamb
Supply voltage
PARAMETER
PARAMETER
High–level input voltage
Low–level input voltage
Input clamp current
High–level output current
Low–level output current
Operating free air temperature range
1994 Dec 05
3
LIMITS
UNIT
MIN
NOM
MAX
4.5 5.0 5.5 V
2.0 V
0.8 V
–18 mA
–15 mA
5 mA
0 +70 °C










Скачать PDF:

[ 74F2244.PDF Даташит ]

Номер в каталогеОписаниеПроизводители
74F22416 4 Synchronous FIFO 3-StatePhilips
Philips
74F2240Octal inverter buffer with 30ohm equivalent output termination 3-StatePhilips
Philips
74F2240Octal Buffer/Line Driver with 25W Series Resistors in the OutputsFairchild
Fairchild
74F2240QCOctal Buffer/Line Driver with 25W Series Resistors in the OutputsFairchild
Fairchild

Номер в каталоге Описание Производители
TL431

100 мА, регулируемый прецизионный шунтирующий регулятор

Unisonic Technologies
Unisonic Technologies
IRF840

8 А, 500 В, N-канальный МОП-транзистор

Vishay
Vishay
LM317

Линейный стабилизатор напряжения, 1,5 А

STMicroelectronics
STMicroelectronics

DataSheet26.com    |    2020    |

  Контакты    |    Поиск