74LVQ244
器件描述：LOW VOLTAGE OCTAL BUS BUFFER WITH 3 STATE OUTPUTS NON-INVERTED
器件厂商：STMICROELECTRONICS [STMicroelectronics]
厂商主页：http://www.st.com/
文件大小：64.47KB，共8页
Sponsor by e络盟器件资料摘要：
74LVQ244
LOW VOLTAGE OCTAL BUS BUFFER
WITH 3 STATE OUTPUTS (NON-INVERTED)
February 1999
ORDER CODES :
74LVQ244M 74LVQ244T
M
(Micro Package)
n HIGH SPEED:
t
PD
= 6 ns (TYP.)at V
CC
=3.3V
n COMPATIBLEWITH TTL OUTPUT
n LOW POWER DISSIPATION:
ICC =4 µA (MAX.) at TA =25
o
C
n LOW NOISE:
V
OLP
= 0.4V (TYP.) at V
CC
= 3.3V
n 75Ω TRANSMISSIONLINE OUTPUT DRIVE
CAPABILITY
n SYMMETRICAL OUTPUT IMPEDANCE:
|IOH|=IOL = 12 mA (MIN)
n PCI BUS LEVELSGUARANTEED AT 24mA
n BALANCED PROPAGATION DELAYS:
tPLH ≅ tPHL
n OPERATING VOLTAGE RANGE:
VCC (OPR)= 2V to 3.6V (1.2VData Retention)
n PIN AND FUNCTION COMPATIBLE WITH
74 SERIES244
n 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 C
2
MOS
T
(TSSOP Package)
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
1/8
LOW VOLTAGE OCTAL BUS BUFFER
WITH 3 STATE OUTPUTS (NON-INVERTED)
February 1999
ORDER CODES :
74LVQ244M 74LVQ244T
M
(Micro Package)
n HIGH SPEED:
t
PD
= 6 ns (TYP.)at V
CC
=3.3V
n COMPATIBLEWITH TTL OUTPUT
n LOW POWER DISSIPATION:
ICC =4 µA (MAX.) at TA =25
o
C
n LOW NOISE:
V
OLP
= 0.4V (TYP.) at V
CC
= 3.3V
n 75Ω TRANSMISSIONLINE OUTPUT DRIVE
CAPABILITY
n SYMMETRICAL OUTPUT IMPEDANCE:
|IOH|=IOL = 12 mA (MIN)
n PCI BUS LEVELSGUARANTEED AT 24mA
n BALANCED PROPAGATION DELAYS:
tPLH ≅ tPHL
n OPERATING VOLTAGE RANGE:
VCC (OPR)= 2V to 3.6V (1.2VData Retention)
n PIN AND FUNCTION COMPATIBLE WITH
74 SERIES244
n 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 C
2
MOS
T
(TSSOP Package)
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
1/8