Datasheet
SN54LV165A . . . JO R W PACKAGE
SN74LV165A . .. D, DB, DGV, NS,
OR PW PACKAGE
(TOP VIEW)
3 2 1 20 19
9 10 11 12 13
4
5
6
7
8
18
17
16
15
14
D
C
NC
B
A
E
F
NC
G
H
SN54LV165A
. ..FK PACKAGE
(TOP VIEW)
CLK
SH/LD
NC
SER
CLK INH
H
GND
NC
V
CC
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
SH/LD
CLK
E
F
G
H
Q
H
GND
V
CC
CLK INH
D
C
B
A
SER
Q
H
Q
H
Q
NC − No internal connection
SN74LV165A . . . RGY PACKAGE
(TOP VIEW)
1 16
8 9
2
3
4
5
6
7
15
14
13
12
11
10
CLK INH
D
C
B
A
SER
CLK
E
F
G
H
Q
H
SH/LD
V
GND
CC
SN54LV165A, SN74LV165A
www.ti.com
SCLS402N –APRIL 1998–REVISED JULY 2013
PARALLEL-LOAD 8-BIT SHIFT REGISTERS
Check for Samples: SN54LV165A, SN74LV165A
1
FEATURES
DESCRIPTION
The ’LV165A devices are parallel-load, 8-bit shift
• 2-V to 5.5-V V
CC
Operation
registers designed for 2-V to 5.5-V V
CC
operation.
• Max t
pd
of 10.5 ns at 5 V
When the devices are clocked, data is shifted toward
• Support Mixed-Mode Voltage Operation on
the serial output Q
H
. Parallel-in access to each stage
All Ports
is provided by eight individual direct data inputs that
• I
off
Supports Partial-Power-Down Mode
are enabled by a low level at the shift/load (SH/LD)
Operation
input. The ’LV165A devices feature a clock-inhibit
function and a complemented serial output, Q
H
.
• Latch-Up Performance Exceeds 250 mA Per
JESD 17
Clocking is accomplished by a low-to-high transition
• ESD Protection Exceeds JESD 22
of the clock (CLK) input while SH/LD is held high and
clock inhibit (CLK INH) is held low. The functions of
– 2000-V Human-Body Model (A114-A)
CLK and CLK INH are interchangeable. Since a low
– 200-V Machine Model (A115-A)
CLK and a low-to-high transition of CLK INH
– 1000-V Charged-Device Model (C101)
accomplishes clocking, CLK INH should be changed
to the high level only while CLK is high. Parallel
loading is inhibited when SH/LD is held high. The
parallel inputs to the register are enabled while
SH/LD is held low, independently of the levels of
CLK, CLK INH, or SER.
These devices are fully specified for partial-power-
down applications using I
off
. The I
off
circuitry disables
the outputs, preventing damaging current backflow
through the devices when they are powered down.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright © 1998–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.