July 2006 Rev 6 1/15
15
74LCX14
Low voltage CMOS HEX SCHMITT inverter
with 5V tolerant inputs
Features
■ 5V tolerant inputs
■ High speed:
–t
PD
= 5.0ns (Max) at V
CC
= 3V
■ Power down protection on inputs and outputs
■ Symmetrical output impedance:
–|I
OH
| = I
OL
= 24mA (Min) at V
CC
= 3V
■ PCI bus levels guaranteed at 24mA
■ Balanced propagation delays:
–t
PLH
≅ t
PHL
■
Operating voltage range:
–V
CC
(Opr) = 2.0V to 3.6V
■ Pin and function compatible with
74 series 14
■ Latch-up performance exceeds
500mA (JESD 17)
■ ESD performance:
– HBM > 2000V
(MIL STD 883 method 3015); MM > 200V
Description
The 74LCX14 is a low voltage CMOS HEX
SCHMITT inverter 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 inputs.
It has same speed performance at 3.3V than 5V
AC/ACT family, combined with a lower power
consumption.
Pin configuration and function are the same as
those of the 74LCX04 but the 74LCX14 has
hysteresis between the positive and negative
input threshold typically of 0.8V.
This together with its schmitt trigger function
allows it to be used on line receivers with slow
rise/fall input signals.
All inputs and outputs are equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
SO-14 TSSOP14
www.st.com
Order codes
Part number Package Packaging
74LCX14MTR SO-14 Tape and reel
74LCX14TTR TSSOP14 Tape and reel
