The M54/74HCT165 is a high speed CMOS 8 BIT
PISO SHIFT REGISTER fabricated in silicon gate
C2MOS technology. It has the same high speed
performance of LSTTL combined with true CMOS
low power consumption. It achives the high speed
operation similar to equivalent LSTTL while
maintaining the CMOS low power dissipation.
Thisdevice contains eight clockedmasterslave RS
flip-flopsconnected as a shiftregister,with auxiliary
gating to provide over-riding asynchronous parallel
entry.Parallel dataentrenswhenthe shift/loadinput
is low.Theparallel data canchange while shift/load
is low, provided that the recommended set-upand
hold times are observed. For clocked operation,
shift/loadmustbe high. The twoclockinputperform
identically; one can be used as a clock inhibit by
applying a high signal; to permit this operation
clocking is accomplished through a 2 input nor
gates.
Toavoiddoubleclocking,however,the inhibit signal
should only go high while the clock is high.
Otherwise the rising inhibit signal will cause the
same responseas risingclockedge.This integrated
circuit has input and output characteristics that are
fully compatible with 54/74 LSTTL logic families.
M54/74HCT devices are designed to directly
interface HSCMOS systems with TTL and NMOS
components.They arealsoplugin replacements for
LSTTL devices giving a reduction of power
consumption.All inputsareequippedwith
protection circuits against static discharge and
transient excess voltage.
Supply Voltage-0.5 to +7V
DC Input Voltage-0.5 to VCC+ 0.5V
I
DC Output Voltage-0.5 to VCC+ 0.5V
DC Input Diode Current± 20mA
DC Output Diode Current± 20mA
DC Output Source Sink Current Per Output Pin± 25mA
DC VCCor Ground Current± 50mA
GND
Power Dissipation500 (*)mW
Storage Temperature-65 to +150
Lead Temperature (10 sec)300
L
o
C
o
C
RECO MM ENDED OPERATIN G CO NDI TIONS
SymbolParameterValueUnit
V
V
T
t
V
r,tf
Supply Voltage4.5 to 5.5V
CC
Input Voltage0 to V
I
Output Voltage0 to V
O
Operating Temperature: M54HC Series
op
M74HC Series
CC
CC
-55 to +125
-40 to +85
Input Rise and Fall Time (VCC= 4.5 to 5.5V)0 to 500ns
V
V
o
C
o
C
3/13
Page 4
M54/M74HCT165
DC SPECIFICATIONS
SymbolParameter
V
V
V
V
I
∆I
High Level Input
IH
Voltage
Low Level Input
IL
Voltage
High Level
OH
Output Voltage
Low Level Output
OL
Voltage
Input Leakage
I
I
Current
Quiescent Supply
CC
Current
Additional worst
CC
case supply
current
Test ConditionsValue
V
(V)
4.5
CC
=25oC
A
54HC and 74HC
Min.Typ.Max.Min.Max.Min.Max.
2.02.02.0V
-40 to 85oC
74HC
-55 to 125oC
54HC
Unit
T
to
5.5
4.5
0.80.80.8V
to
5.5
VI=
IO=-20 µA4.44.54.44.4
V
IH
4.5
or
I
=-4.0 mA 4.184.314.134.10
O
V
IL
VI=
IO=20µA0.00.10.10.1
V
IH
4.5
or
I
= 4.0 mA0.170.260.330.4
O
V
IL
VI=VCCor GND±0.1±1±1µA
5.5
5.5 VI=VCCor GND44080µA
5.5Per Input pin
2.02.93.0mA
VI= 0.5V or
V
= 2.4V
I
Other Inputs at
VCCor GND
IO=0
V
V
4/13
Page 5
M54/M74HCT165
AC ELECTRICAL CHARACTERISTICS (CL=50pF,Inputtr=tf=6ns)
Test ConditionsValue
T
=25oC
SymbolParameter
t
TLH
t
THL
t
PLH
t
PHL
Output Transition
Time
Propagation
Delay Time
V
CC
(V)
4.58151922ns
4.524374656ns
A
54HC and 74HC
Min.Typ.Max.Min.Max.Min.Max.
(CK - QH, QH)
t
t
PLH
PHL
Propagation
Delay Time
4.524374656ns
(CKINH-QH,QH)
t
t
PLH
PHL
Propagation
Delay Time
4.526405060ns
(S/L - QH, QH)
t
t
PLH
PHL
Propagation
Delay Time
4.522344351ns
(H - QH, QH)
f
MAX
Maximum Clock
4.5304624MHz
Frequency
t
W(H)
t
W(L)
Minimum Pulse
Width
4.58151922ns
(CK, CKINH)
t
W(H)
t
W(L)
Minimum Pulse
Width
4.581519ns
(S/L)
t
Minimum Set-up
s
4.57151922ns
Time
(PI - S/L)
Minimum Set-up
t
s
4.57151922ns
Time
(S/L -CK, CHINH)
Minimum Set-up
t
s
4.57151922ns
Time
(S -CK, CHINH)
t
Minimum Hold
h
4.5000ns
Time
(PI - S/L)
(S/L -CK, CHINH)
t
REM
Minimum
4.55151922ns
Removal Time
(CK - CKINH)
(CKINH - CK)
C
C
PD
Input Capacitance5101010pF
IN
(*)Power Dissipation
96pF
Capacitance
(*) CPDisdefined as the valueof the IC’s internal equivalent capacitance which is calculated fromthe operating current consumption withoutload.
(Referto Test Circuit).Average opertingcurrent can be obtained bythefollowingequation. ICC(opr) = CPD•VCC•fIN+I
-40 to 85oC
74HC
-55 to 125oC
54HC
CC
Unit
5/13
Page 6
M54/M74HCT165
TIMING CHART
6/13
Page 7
SWITCHING CHARACTERISTICS TEST WAVEFORM
SERIAL MODEPARALLEL MODE
PARALLEL MODEPARALLEL MODE
M54/M74HCT165
PARALLEL MODE
7/13
Page 8
M54/M74HCT165
TEST CIRCUIT ICC(Opr.)
INPUTWAVEFORM IS THE SAME AS THATIN CASE OF SWITCHING CHARACTERISTICS TEST.
Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsability for the
consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. No
license is granted byimplication or otherwise under any patent or patent rights ofSGS-THOMSON Microelectronics. Specificationsmentioned
in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied.
SGS-THOMSON Microelectronicsproducts are not authorized foruse ascritical componentsin life support devices orsystems without express
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