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STMicroelectronics |
® 74LVQ125
QUAD BUS BUFFERS (3-STATE)
s HIGH SPEED: tPD = 5 ns (TYP.) at VCC = 3.3V
s COMPATIBLE WITH TTL OUTPUTS
s LOW POWER DISSIPATION:
ICC = 4 µA (MAX.) at TA = 25 oC
s LOW NOISE:
VOLP = 0.3 V (TYP.) at VCC = 3.3V
s 75Ω TRANSMISSION LINE DRIVING
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 (1.2V Data Retention)
s PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 125
s IMPROVED LATCH-UP IMMUNITY
DESCRIPTION
The LVQ125 is a low voltage CMOS QUAD BUS
BUFFERS fabricated with sub-micron silicon gate
and double-layer metal wiring C2MOS
M
(Micro Package)
T
(TSSOP Package)
ORDER CODES :
74LVQ125M
74LVQ125T
technology. It is ideal for low power and low noise
3.3V applications.
The device requires the same 3-STATE control
input G to be set high to place the output in to the
high impedance state.
It has better speed performance at 3.3V than 5V
LS-TTL family combined with the true CMOS low
power consumption.
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
1/8
74LVQ125
INPUT AND OUTPUT 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
H
L
L
Y
Z
L
H
ABSOLUTE MAXIMUM RATINGS
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 or IGND DC VCC or Ground Current
± 200
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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