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74LVQ244T PDF даташит

Спецификация 74LVQ244T изготовлена ​​​​«STMicroelectronics» и имеет функцию, называемую «LOW VOLTAGE OCTAL BUS BUFFER WITH 3 STATE OUTPUTS NON-INVERTED».

Детали детали

Номер произв 74LVQ244T
Описание LOW VOLTAGE OCTAL BUS BUFFER WITH 3 STATE OUTPUTS NON-INVERTED
Производители STMicroelectronics
логотип STMicroelectronics логотип 

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74LVQ244T Даташит, Описание, Даташиты
74LVQ244
LOW VOLTAGE OCTAL BUS BUFFER
WITH 3 STATE OUTPUTS (NON-INVERTED)
s HIGH SPEED:
tPD = 6 ns (TYP.) at VCC = 3.3V
s COMPATIBLE WITH TTL OUTPUT
s LOW POWER DISSIPATION:
ICC = 4 µA (MAX.) at TA = 25 oC
s LOW NOISE:
VOLP = 0.4V (TYP.) at VCC = 3.3V
s 75TRANSMISSION LINE OUTPUT DRIVE
CAPABILITY
s SYMMETRICAL OUTPUT IMPEDANCE:
|IOH| = IOL = 12 mA (MIN)
s PCI BUS LEVELS GUARANTEED AT 24mA
s BALANCED PROPAGATION DELAYS:
tPLH tPHL
s OPERATING VOLTAGE RANGE:
VCC (OPR) = 2V to 3.6V (1.2VData Retention)
s PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 244
s IMPROVED LATCH-UP IMMUNITY
DESCRIPTION
The LVQ244 is a low voltage CMOS OCTAL BUS
BUFFER fabricated with sub-micron silicon gate
and double-layer metal wiring C2MOS
M
(Micro Package)
T
(TSSOP Package)
ORDER CODES :
74LVQ244M
74LVQ244T
technology. It is ideal for low power and low noise
3.3V applications.
It has better speed performance at 3.3V than 5V
LSTTL family combined with the true CMOS low
power consumption.
G output control governs four BUS BUFFERs.
This device is designed to be used with 3 state
memory address drivers, etc.
All inputs and outputs are equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
PIN CONNECTION AND IEC LOGIC SYMBOLS
February 1999
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74LVQ244T Даташит, Описание, Даташиты
74LVQ244
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
PIN No SYMBOL NAME AND FUNCT ION
1 1G Output Enable Input
2, 4,6, 8 1A1 to 1A4 Data Inputs
9, 7,5, 3 2Y1 to 2Y4 Data Outputs
11, 13, 15, 17 2A1 to 2A4 Data Inputs
18, 16, 14, 12 1Y1 to 1Y4 Data Outputs
19 2G Output Enable Input
10 GND Ground (0V)
20 VCC Positive Supply Voltage
TRUTH TABLE
X:”H” or ”L”
Z: High impedance
G
L
L
H
INPUT
An
L
H
X
OUTPUT
Yn
L
H
Z
ABSOLUTE MAXIMUM RATING
Symbol
Parameter
Value
Unit
VCC Supply Voltage
-0.5 to +7
V
VI DC Input Voltage
-0.5 to VCC + 0.5
V
VO DC Output Voltage
-0.5 to VCC + 0.5
V
IIK DC Input Diode Current
± 20 mA
IOK DC Output Diode Current
± 20 mA
IO DC Output Current
± 50 mA
ICC orIGND DC VCC or Ground Current
± 400
mA
Tstg Storage Temperature
-65 to +150
oC
TL Lead Temperature (10 sec)
300 oC
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied.
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
VCC Supply Voltage (note 1)
VI Input Voltage
VO Output Voltage
Top Operating Temperature:
dt/dv Input Rise and Fall Time (VCC = 3V) (note 2)
1) Truth Table guaranteed: 1.2V to 3.6V
2) VIN from 0.8V to 2V
Valu e
2 to 3.6
0 to VCC
0 to VCC
-40 to +85
0 to 10
Unit
V
V
V
oC
ns/V
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74LVQ244T Даташит, Описание, Даташиты
74LVQ244
DC SPECIFICATIONS
Symb ol
Parameter
Test Conditions
VCC
(V)
Valu e
TA = 25 oC
-40 to 85 oC
Min. T yp. Max. Min. Max.
VIH
High Level Input Voltage
3.0 to 3.6
VIL Low Level Input Voltage
2.0 2.0
0.8 0.8
VOH High Level Output
Voltage
VOL Low Level Output
Voltage
3.0 VI(*) = IO=-50 µA 2.9 2.99
2.9
VIH or
VIL
IO=-12 mA
IO=-24 mA
2.58
2.48
2.2
3.0
VI(*) =
IO=50 µA
0.002 0.1
0.1
VIH or
VIL
IO=12 mA
IO=24 mA
0 0.36
0.44
0.55
II Input Leakage Current 3.6 VI = VCC orGND
±0.1 ±1
IOZ 3 State Output Leakage
Current
3.6
VI = VIH orVIL
VO = VCC orGND
±0.5 ±5
ICC Quiescent Supply
Current
3.6 VI = VCC orGND
4 40
IOLD Dynamic Output Current
3.6
VOLD = 0.8 V max
IOHD (note 1, 2)
VOHD = 2 V min
1) Maximum test duration 2ms, one output loaded attime
2) Incident wave switching is guaranteed on transmission lines with impedances as low as 50 .
(*) All outputs loaded.
36
-25
Unit
V
V
V
V
µA
µA
µA
mA
mA
DYNAMIC SWITCHING CHARACTERISTICS
Symb ol
Parameter
Test Conditions
VCC
(V)
Valu e
TA = 25 oC
-40 to 85 oC
Min. T yp. Max. Min. Max.
Unit
VOLP Dynamic Low Voltage
VOLV Quiet Output (note 1, 2)
3.3
0.4 0.8
-0.8 -0.5
VIHD Dynamic High Voltage
Input (note 1, 3)
3.3
CL = 50 pF
2V
VILD Dynamic Low Voltage
Input (note 1, 3)
3.3
0.8
1) Worst case package
2) Max number of outputs defined as (n). Data inputs are driven 0V to 3.3V, (n -1) outputs switching and one output at GND
3) max number of data inputs (n) switching. (n-1) switching 0V to3.3V. Inputs under test switching: 3.3V to threshold (VILD), 0V to threshold (VIHD). f=1MHz
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