74LCX240 Datasheet, PDF (1/6 Pages) Fairchild Semiconductor – Low Voltage Octal Buffer/Line Driver with 5V Tolerant Inputs and Outputs

December 1996
74LCX240
Low-Voltage Octal Buffer Line Driver
with 5V Tolerant Inputs and Outputs
General Description
The LCX240 is an inverting octal buffer and line driver de-
signed to be employed as a memory address driver clock
driver and bus oriented transmitter or receiver The device is
designed for low voltage (3 3V) V_CC applications with capa-
bility of interfacing to a 5V signal environment
The LCX240 is fabricated with an advanced CMOS technol-
ogy to achieve high speed operation while maintaining
CMOS low power dissipation
Features
Y _{5V tolerant inputs and outputs}
Y _{6 5 ns tPD max 10 mA ICCQ max}
Y _{Power-down high impedance inputs and outputs}
Y _{Supports live insertion withdrawal}
Y _{2 0V – 3 6V VCC supply operation}
Y g_{24 mA output drive}
Y _{Implements patented Quiet Series}TM _{noise EMI}
reduction circuitry
Y _{Functionally compatible with the 74 series 240}
Y _{Latch-up performance exceeds 500 mA}
Y _{ESD performance}
Human Body Model ^l 2000V
Machine Model ^l 200V
Logic Symbol
IEEE IEC
Connection Diagram
Pin Assignment
for SOIC SSOP and TSSOP
TL F 11993 – 1
TL F 11993 – 2
Truth Tables
Pin Names
OE₁ OE₂
I₀ – I₇
O₀ – O₇
Description
TRI-STATE Output Enable Inputs
Inputs
Outputs
Inputs
OE₁
I_n
L
L
L
H
H
X
Outputs
(Pins 12 14 16 18)
H
L
Z
Inputs
OE₂
I_n
L
L
L
H
H
X
H e HIGH Voltage Level L e LOW Voltage Level X e Immaterial Z e High Impedance
Outputs
(Pins 3 5 7 9)
H
L
Z
Order Number
See NS Package Number
SOIC JEDEC
74LCX240WM
74LCX240WMX
M20B
SOIC EIAJ
74LCX240SJ
74LCX240SJX
M20D
SSOP Type II
74LCX240MSA
74LCX240MSAX
MSA20
TSSOP
74LCX240MTC
74LCX240MTCX
MTC20
TRI-STATE is a registered trademark of National Semiconductor Corporation
Quiet SeriesTM is a trademark of National Semiconductor Corporation
C1996 National Semiconductor Corporation TL F 11993
RRD-B30M17 Printed in U S A
http www national com