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74LCX16240T Datasheet

  • 74LCX16240T

  • Quad 4-Bit Buffer/Driver

  • 68.64KB

  • 8頁

  • ETC

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74LCX16240
LOW VOLTAGE CMOS 16-BIT BUS BUFFER (3-STATE INV.)
WITH 5V TOLERANT INPUTS AND OUTPUTS
s
s
s
s
s
s
s
s
s
s
5V TOLERANT INPUTS AND OUTPUTS
HIGH SPEED:
t
PD
=4.5 ns (MAX.) at V
CC
= 3.0V
POWER-DOWN PROTECTION ON INPUTS
AND OUTPUTS
SYMMETRICAL OUTPUT IMPEDANCE:
|I
OH
| = I
OL
= 24 mA (MIN)
PCI BUS LEVELS GUARANTEED AT 24mA
BALANCED PROPAGATION DELAYS:
t
PLH
鈮?/div>
t
PHL
OPERATING VOLTAGE RANGE:
V
CC
(OPR) = 2.7V to 3.6V (1.5V Data Retention)
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 16240
LATCH-UP PERFORMANCE EXCEEDS 500mA
ESD PERFORMANCE:
HBM >2000V; MM > 200V
T
(TSSOP48 Package)
ORDER CODES :
74LCX16240T
PIN CONNECTION
DESCRIPTION
The LCX16240 is a low voltage CMOS 16-BIT
BUS BUFFER fabricated with sub-micron silicon
gate and double-layer metal wiring C
2
MOS
technology. It is ideal for low power and high
speed 3.3V applications; it can be interfaced to
5V signal environment for both inputs and
outputs.
Any nG output control governs four BUS
BUFFERS. Output Enable inputs (nG) tied
together give full 16-bit operation.
When nG is LOW, the outputs are on. When nG
is HIGH, the output are in high impedance state.
This device is designed to be used with 3 state
memory address drivers, etc.
It has better speed performance at 3.3V than 5V
LSTTL 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.
February 1999
1/8

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