1/14August 2004
■ HIGH SPEED:
t
PD
= 5.5ns (TYP.) at V
CC
= 3.3V
■ 5V TOLERANT INPUTS
■ INPUT VOLTAGE LEVEL:
V
IL
=0.8V, V
IH
=2V at V
CC
=3V
■ LOW POWER DISSIPATION:
I
CC
= 4 µA (MAX.) at T
A
=25°C
■ LOW NOISE:
V
OLP
= 0.3V (TYP.) at V
CC
= 3.3V
■ SYMMETRICAL OUTPUT IMPEDANCE:
|I
OH
| = I
OL
= 4mA (MIN)
■ BALANCED PROPAGATION DELAYS:
t
PLH
≅ t
PHL
■ OPERATING VOLTAGE RANGE:
V
CC
(OPR) = 2V to 3.6V (1.2V Data Retention)
■ PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 594
■ IMPROVED LATCH-UP IMMUNITY
■ POWER DOWN PROTECTION ON INPUTS
DESCRIPTION
The 74LVX594 is a low voltage CMOS 8 BIT
SHIFT REGISTER WITH OUTPUT REGISTER
fabricated with sub-micron silicon gate and
double-layer metal wiring C
2
MOS technology. It is
ideal for low power, battery operated and low
noise 3.3V applications.
This device contains an 8-bit serial-in, parallel-out
shift register that feeds an 8-bit D-type storage
register. Separate clocks and direct overriding
clear (SCLR,
RCLR) are provided for both the shift
register and the storage register. A serial (QH’)
output is provided for cascading purposes.
Both
the shift register and storage register use
positive-edge triggered clocks. If the clocks are
connected together, the shift register state will
always be one clock pulse ahead of the storage
register.
Power down protection is provided on all inputs
and 0 to 7V can be accepted on inputs with no
regard to the supply voltage. This device can be
used to interface 5V to 3V system. It combines
high speed performance 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.
74LVX594
LOW VOLTAGE CMOS 8 BIT SHIFT REGISTER
WITH OUTPUT REGISTER (5V TOLERANT INPUTS)
Figure 1: Pin Connection And IEC Logic Symbols
Table 1: Order Codes
PACKAGE T & R
SOP 74LVX594MTR
TSSOP 74LVX594TTR
TSSOPSOP
Rev. 5
