© 2005 Fairchild Semiconductor Corporation DS011996 www.fairchildsemi.com
February 1994
Revised March 2005
7
4LCX374 Low
V
o
lt
age
Oct
a
l
D-T
ype
Fl
ip-
F
lo
p wit
h

5V T
o
l
e
rant
I
nput
s
and Out
put
s
74LCX374
Low Voltage Octal D-Type Flip-Flop
with 5V Tolerant Inputs and Outputs
General Description
The LCX374 consists of eight D-type flip-flops featuring
separate D-type inputs for each flip-flop and 3-STATE out-
puts for bus-oriented applications. A buffered clock (CP)
and Output Enable (OE) are common to all flip-flops. The
LCX374 is designed for low voltage (3.3V or 2.5V) V
CC
applications with capability of interfacing to a 5V signal
environment.
The LCX374 is fabricated with an advanced CMOS tech-
nology to achieve high speed operation while maintaining
CMOS low power dissipation.
Features
a73 5V tolerant inputs and outputs
a73 2.3V–3.6V V
CC
specifications provided
a73 8.5 ns t
PD
max (V
CC
c32 3.3V), 10 c80A I
CC
max
a73 Power-down high impedance inputs and outputs
a73 Supports live insertion/withdrawal (Note 1)
a73 c11424 mA output drive (V
CC
c32 3.0V)
a73 Implements patented noise/EMI reduction circuitry
a73 Latch-up performance exceeds JEDEC 78 conditions
a73 ESD performance:
Human Body Model c33 2000V
Machine Model c33 200V
a73 Leadless Pb-Free DQFN package
Note 1: To ensure the high-impedance state during power up or down, OE
should be tied to V
CC
through a pull-up resistor: the minimum value or the
resistor is determined by the current-sourcing capability of the driver.

Ordering Code:
Devices also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.
Pb-Free package per JEDEC J-STD-020B.
Note 2: DQFN package available in Tape and Reel only.
Note 3: “_NL” indicates Pb-Free package (per JEDEC J-STD-020B). Device available in Tape and Reel only.
Order Number
Package
Package Description
Number
74LCX374WM M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
74LCX374SJ M20D Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74LCX374BQX
(Preliminary)
(Note 2)
MLP020B Pb-Free 20-Terminal Depopulated Quad Very-Thin Flat Pack No Leads (DQFN), JEDEC
MO-241, 2.5 x 4.5mm
74LCX374MSA MSA20 20-Lead Shrink Small Outline Package (SSOP), JEDEC MO-150, 5.3mm Wide
74LCX374MTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
74LCX374MTCX_NL
(Note 3)
MTC20 Pb-Free 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm
Wide