74VHC126 PDF даташит
Спецификация 74VHC126 изготовлена «STMicroelectronics» и имеет функцию, называемую «QUAD BUS BUFFERS (3-STATE)». |
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Детали детали
Номер произв | 74VHC126 |
Описание | QUAD BUS BUFFERS (3-STATE) |
Производители | STMicroelectronics |
логотип |
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( DataSheet : www.DataSheet4U.com )
® 74VHC126
QUAD BUS BUFFERS (3-STATE)
s HIGH SPEED: tPD = 3.8 ns (TYP.) at VCC = 5V
s LOW POWER DISSIPATION:
ICC = 4 µA (MAX.) at TA = 25 oC
s HIGH NOISE IMMUNITY:
VNIH = VNIL = 28% VCC (MIN.)
s POWER DOWN PROTECTION ON INPUTS
s SYMMETRICAL OUTPUT IMPEDANCE:
|IOH| = IOL = 8 mA (MIN)
s BALANCED PROPAGATION DELAYS:
tPLH ≅ tPHL
s OPERATING VOLTAGE RANGE:
VCC (OPR) = 2V to 5.5V
s PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 126
s IMPROVED LATCH-UP IMMUNITY
s LOW NOISE: VOLP = 0.8V (Max.)
DESCRIPTION
The 74VHC126 is an advanced high-speed
CMOS QUAD BUS BUFFERS fabricated with
sub-micron silicon gate and double-layer metal
wiring C2MOS technology.
PRELIMINARY DATA
M
(Micro Package)
T
(TSSOP Package)
ORDER CODES :
74VHC126M
74VHC126T
This device requires the 3-STATE control input G
to be set low to place the output into the high
impedance state.
Power down protection is provided on all inputs
and 0 to 7V can be accepted on inputs with no
regard to the supply voltage. This device can be
used to interface 5V to 3V.
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
June 1999
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74VHC126
INPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
PIN No
1, 4, 10, 13
2, 5, 9, 12
3, 6, 8, 11
7
14
S Y M B OL
1G to 4G
1A to 4A
1Y to 4Y
GND
VCC
NAME AND FUNCTION
Output Enable Inputs
Data Inputs
Data Outputs
Ground (0V)
Positive Supply Voltage
TRUTH TABLE
A
X
L
H
X:”H” or ”L”
Z: High Impedance
G
L
H
H
Y
Z
L
H
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
VCC Supply Voltage
-0.5 to +7.0
V
VI DC Input Voltage
-0.5 to +7.0
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
± 25 mA
ICC or IGND DC VCC or Ground Current
± 50 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
VI Input Voltage
VO Output Voltage
Top Operating Temperature
dt/dv Input Rise and Fall Time (see note 1) (VCC = 3.3 ± 0.3V)
(V CC = 5.0 ± 0.5V)
1) VIN from 30% to70%of VCC
Valu e
2.0 to 5.5
0 to 5.5
0 to VCC
-40 to +85
0 to 100
0 to 20
Unit
V
V
V
oC
ns/V
ns/V
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74VHC126
DC SPECIFICATIONS
Symb ol
Parameter
VIH High Level Input
Voltage
VIL Low Level Input
Voltage
VOH High Level Output
Voltage
VOL Low Level Output
Voltage
IOZ High Impedance
Output Leakage
Current
II Input Leakage Current
ICC Quiescent Supply
Current
Test Conditions
V CC
( V)
2 .0
3.0 to 5.5
2.0
3.0 to 5.5
2.0
3.0
4.5
3.0
4.5
2.0
3.0
4 .5
3.0
4.5
5 .5
IO=-50 µA
IO=-50 µA
IO=-50 µA
IO=-4 mA
IO=-8 mA
IO=50 µA
IO=50 µA
IO=50 µA
IO=4 mA
IO=8 mA
VI = VIH or VIL
VO = VCC or GND
0 to 5.5
5.5
VI = 5.5V or GND
VI = VCC or GND
Value
TA = 25 oC
-40 to 85 oC
Min. Typ . Max. Min . Max.
1.5 1.5
0.7VCC
0.7VCC
0.5 0.5
0.3VCC
0.3VCC
1.9 2.0
1.9
2.9 3.0
2.9
4.4 4.5
4.4
2.58 2.48
3.94 3.8
0.0 0.1
0.1
0.0 0.1
0.1
0.0 0.1
0.1
0.36 0.44
0.36 0.44
±0.25
±2.5
±0.1
4
±1.0
40
Un it
V
V
V
V
µA
µA
µA
AC ELECTRICAL CHARACTERISTICS (Input tr = tf =3 ns)
Symb ol
Parameter
tPLH Propagation Delay
tPHL Time
tPLZ Output Disable Time
tPHZ
tPZL Output Enable Time
tPZH
(*) Voltage range is 3.3V ± 0.3V
(**) Voltage range is 5V ± 0.5V
Test Condition
V CC
( V)
CL
(pF)
3.3(*)
3.3(*)
5.0(**)
5.0(**)
3.3(*)
3.3(*)
5.0(**)
5.0(**)
3.3(*)
5.0(**)
15
50
15
50
15 RL = 1KΩ
50 RL = 1KΩ
15 RL = 1KΩ
50 RL = 1KΩ
50 RL = 1KΩ
50 RL = 1KΩ
Value
TA = 25 oC
Min. Typ. Max.
5.6 8.0
8.1 11.5
3.8 5.5
5.3 7.5
5.4 8.0
7.9 11.5
3.6 5.1
5.1 7.1
9.5 13.2
6.1 8.8
-40 to 85 oC
Min . Max.
1.0 9.5
1.0 13.0
1.0 6.5
1.0 8.5
1.0 9.5
1.0 13.0
1.0 6.0
1.0 8.0
1.0 15.0
1.0 10.0
Unit
ns
ns
ns
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