Datasheet
SN54165, SN54LS165A, SN74165, SN74LS165A
PARALLEL-LOAD 8-BIT SHIFT REGISTERS
SDLS062D – OCTOBER 1976 – REVISED FEBRUARY 2002
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
recommended operating conditions
SN54LS165A SN74LS165A
UNIT
MIN NOM MAX MIN NOM MAX
UNIT
V
CC
Supply voltage 4.5 5 5.5 4.75 5 5.25 V
V
IH
High-level input voltage 2 2 V
V
IL
Low-level input voltage 0.7 0.8 V
I
OH
High-level output current –0.4 –0.4 mA
I
OL
Low-level output current 4 8 mA
f
clock
Clock frequency 0 25 0 25 MHz
t
(l k)
Width of clock in
p
ut
p
ulse (see Figure 2)
Clock high 15 15
ns
t
w(clock)
Width
of
clock
input
pulse
(see
Figure
2)
Clock low 25 25
ns
t
(l d)
Width of load in
p
ut
p
ulse
Clock high 25 25
ns
t
w(load)
Width
of
load
input
pulse
Clock low 17 17
ns
t
su
Clock-enable setup time (see Figure 2) 30 30 ns
t
su
Parallel input setup time (see Figure 2) 10 10 ns
t
su
Serial input setup time (see Figure 2) 20 20 ns
t
su
Shift setup time (see Figure 2) 45 45 ns
t
h
Hold time at any input 0 0 ns
T
A
Operating free-air temperature –55 125 0 70 °C
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
†
SN54LS165A SN74LS165A
UNIT
PARAMETER
TEST
CONDITIONS
†
MIN TYP
‡
MAX MIN TYP
‡
MAX
UNIT
V
IK
V
CC
= MIN, I
I
= –18 mA –1.5 –1.5 V
V
OH
V
CC
= MIN, V
IH
= 2 V, V
IL
= MAX, I
OH
= –0.4 mA 2.5 3.5 2.7 3.5 V
V
OL
V
CC
= MIN
V
IH
=2V
V
IL
= MAX
I
OL
= 4 mA 0.25 0.4 0.25 0.4
V
V
OL
V
CC
=
MIN
,
V
IH
=
2
V
,
V
IL
=
MAX
I
OL
= 8 mA 0.35 0.5
V
I
I
V
CC
= MAX, V
I
= 7 V 0.1 0.1 mA
I
IH
V
CC
= MAX, V
I
= 2.7 V 20 20 µA
I
IL
V
CC
= MAX, V
I
= 0.4 V –0.4 –0.4 mA
I
OS
§
V
CC
= MAX –20 –100 –20 –100 mA
I
CC
V
CC
= MAX, See Note 4 18 30 18 30 mA
NOTE 4. With the outputs open, CLK INH and CLK at 4.5 V, and a clock pulse applied to SH/LD, I
CC
is measured first with the parallel inputs
at 4.5 V, then with the parallel inputs grounded.
†
For conditions shown as MIN or MAX, use the appropriate values specified under recommended operating conditions.
‡
All typical values are at V
CC
= 5 V, T
A
= 25°C.
§
Not more than one output should be shorted at a time, and the duration of the short-circuit should not exceed one second.
The SN54165 and SN74165 devices
are obsolete and are no longer supplied
.