M54HCT164

Features:

.HIGHSPEED tPD =20 ns(TYP.) ATVCC =5V
.LOWPOWER DISSIPATION ICC =4 A(MAX.)AT TA =25°C
.OUTPUTDRIVE CAPABILITY 10 LSTTLLOADS
.BALANCEDPROPAGATIONDELAYS tPLH =tPHL =4mA (MIN.)
.SYMMETRICALOUTPUTIMPEDANCE IOL =?IOH? =4 mA(MIN)
.COMPATIBLE WITHTTLOUTPUTS VIH = 2V(MIN.)VIL = 0.8V (MAX)
.WIDE OPERATINGVOLTAGERANGE VCC (OPR)= 2V TO6 V PIN ANDFUNCTION COMPATIBLE
. WITH 54/74LS164


Pinout




Specifications

Symbol	Parameter	Value	Unit
VCC	Supply Voltage	-0.5 to +7	V
VI	DC Input Voltage	-0.5 to VCC + 0.5	V
VO	DC Output Voltage	-0.5 to VCC + 0.5	V
IIK	DC Input Diode Current	± 20	mA
IOK	DC Output Diode Current	± 20	mA
IO	DC Output Source Sink Current Per Output Pin	± 25	mA
ICC or IGND	DC VCC or Ground Current	± 50	mA
PD	Power Dissipation	500 (*)	mW
Tstg	Storage Temperature	-65 to +150	OC
TL	Lead Temperature (10 sec)	300	OC

Description

The M54/74HCT164 is a high speed CMOS 8 BIT SIPO SHIFT REGISTER fabricated in silicon gate 2 C MOStechnology.Ithasthesamehighspeedperformance ofLSTTLcombined with trueCMOSlow powerconsumption.

The HCT164 isan8bitshiftregister withserialdata entry and an outputfrom each of the eightstages. Dataisentered seriallythrough oneoftwoinputs (A orB),either oftheseinputscanbeusedasanactive high enable for data entry through the other input.

An M54/74HCT164 unusedinput must be high,or bothinputscon- nectedtogether. Each low-to-hightransition on the clock input shifts data one place to the right and entersintoQA,thelogicNANDofthetwodatainputs (A* B),the datathatexisted before therising clock edge. A low level on the clear input overrides all otherinputsand clearstheregisterasynchronously, forcing allQ outputslow.

M54/74HCT164 All inputs are equipped with protection circuits against static discharge and transient excess volt- age.

This integrated circuit M54/74HCT164 hasinputand outputcharac- teristicsthat arefully compatible with 54/74LSTTL logicfamilies. M54/74HCT devices aredesigned to 2 directly interface HSC MOSsystemswith TTLand NMOScomponents. They arealso plugin replacements for LSTTL devices giving a reduction of powerconsumption.