SGS Thomson Microelectronics M74HC4094 Datasheet

8 BIT SIPOSHIFT LATCH REGISTER (3-STATE)

.HIGH SPEED

f

= 73 MHz (TYP.) AT VCC=5V

MAX

.LOWPOWER DISSIPATION

ICC=4µA(MAX.) AT TA=25°C

.HIGH NOISE IMMUNITY

V

NIH=VNIL

=28%VCC(MIN.)

.OUTPUT DRIVE CAPABILITY

10 LSTTL LOADS

.SYMMETRICALOUTPUT IMPEDANCE

|IOH|=IOL=4 mA (MIN.)

.BALANCEDPROPAGATION DELAYS

t

PLH=tPHL

.WIDE OPERATING VOLTAGERANGE

VCC(OPR)= 2 V TO 6 V

.PIN AND FUNCTION COMPATIBLE

WITH 4094B

M54HC4094
M74HC4094

B1R

(PlasticPackage)

M1R

(MicroPackage)

ORDER CODES :

M54HC 4094F1R M74H C4094M1R
M74HC 4094B1R M74HC4 094C1R

F1R

(CeramicPackage)

C1R

(Chip Carrier)

DESCRIPTION

The M54/74HC4094 is a high speed CMOS 8 BIT
SIPOSHIFTLATCH REGISTERfabricatedwithsili­con gate C2MOS technology.

It has the same high speed performance of LSTTL
combined withtrue CMOSlow power consumption.
This deviceconsists of an 8-bit shiftregister and an
8-bit latch with 3-state output buffer.Data is shifted
serially through the shift register on the positive
going transition of the clockinput signal.Theoutput
of the last stage (Qs) can be used to cascadesev­eraldevices.

DataontheQs outputistransferredtoa secondout­put (Qs’) on the following negative transition of the
clockinputsignal. Thedataof eachstageoftheshift
register is provided with a latch,which latches data
on the negative going transition of the STROBE
inputsignal. When the STROBE input is held high,
datapropagatesthroughthelatchtoa3-stateoutput
buffer.

This buffer is enabled when OUTPUT ENABLE
inputistakenhigh. Allinputsare equipped with pro­tectioncircuitsagainststaticdischarge andtransient
excess voltage.

PIN CONNECTIONS (top view)

NC =
No Internal
Connection

February 1993

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M54/M74HC4094

LOGIC DIAGRAM

LOGIC DIAGRAM

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TRUTH TABLE

M54/M74HC4094

CK OE ST SI

H H L L Qn-1 Q7 NC
H H H H Qn-1 Q7 NC
H L X NCNCQ7NC

LXXZZQ7NC

HXXNCNCNCQs

LXXZZNCQs

X:Don’tCare Z: HighImpedance NC:NoChange

INPUT AND OUTPUT EQUIVALENT CIRCUIT

PARALLEL OUTPUT SERIAL OUTPUT

Q1 Qn Qs Qs’

PIN DESCRIPTION

PIN No SYMBOL NAME AND FUNCTION

1 STROBE Strobe Input
2 SERIAL IN Serial Input
3 CLOCK Clock Input

4, 5, 6, 7,

14, 13, 12,

11

9, 10 QS Q’S Serial Outputs

15 OE Output Enable Input

8 GND Ground (0V)

16 V

Q1 to Q7 Parallel Outputs

CC

Positive Supply Voltage

IEC LOGIC SYMBOL

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M54/M74HC4094

ABSOLU TE M AXIMU M R AT INGS

Symbol Parameter Value Unit

V

CC

V

V

O

I

IK

I

OK

I

O

I

or I

CC

P

D

T

stg

T

AbsoluteMaximumRatingsarethosevalues beyond whichdamagetothedevicemayoccur.Functionaloperationunder these conditionisnotimplied.
(*)500 mW:≅ 65oC derateto300mWby 10mW/oC: 65oCto85oC

RECO MM ENDED OPERAT I N G C ONDITI ONS

Symbol Parameter Value Unit

V

CC

V

I

V

O

T

op

t

r,tf

Supply Voltage -0.5 to +7 V
DC Input Voltage -0.5 to VCC+ 0.5 V

I

DC Output Voltage -0.5 to VCC+ 0.5 V
DC Input Diode Current ± 20 mA
DC Output Diode Current ± 20 mA
DC Output Source Sink Current Per Output Pin ± 25 mA
DC VCCor Ground Current ± 50 mA

GND

Power Dissipation 500 (*) mW
Storage Temperature -65 to +150
Lead Temperature (10 sec) 300

L

Supply Voltage 2 to 6 V
Input Voltage 0 to V
Output Voltage 0 to V
Operating Temperature: M54HC Series

M74HC Series

CC
CC

-55 to +125

-40 to +85

Input Rise and Fall Time VCC= 2 V 0 to 1000 ns

V

= 4.5 V 0 to 500

CC

V

= 6 V 0 to 400

CC

o

C

o

C

V
V

o

C

o

C

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