SGS Thomson Microelectronics M74HC593 Datasheet
M54HC593
M74HC593
8 BIT BINARY COUNTER WITH INPUTREGISTER (3-STATE)
.HIGH SPEED
f
= 80 MHz(TYP.) AT VCC=5V
MAX
.LOWPOWERDISSIPATION
ICC=4µA(MAX.) AT TA=25°C
.OUTPUTDRIVE CAPABILITY
10 LSTTL LOADSFORRCO
15 LSTTL LOADSFORQn
.BALANCEDPROPAGATION DELAYS
t
PLH=tPHL
B1R
(PlasticPackage)
F1R
(CeramicPackage)
.SYMMETRICALOUTPUT IMPEDANCE
IOL=IOH = 6 mA (MIN.) for Qn
IOL=IOH = 4 mA (MIN.) for RCO
.HIGH NOISE IMMUNITY
V
NIH=VNIL
=28%VCC(MIN.)
.WIDE OPERATINGVOLTAGE RANGE
VCC(OPR)= 2V TO6 V
.PIN ANDFUNCTION COMPATIBLE
WITH 54/74LS593
M1R
(MicroPackage)
ORDER CODES :
M54HC 593F1R M74H C593M1R
M74HC 593B1R M74HC5 93C1R
C1R
(Chip Carrier)
DESCRIPTION
The M54/74HC593 is a high speed CMOS 8 BIT
REGISTER COUNTER (3 STATE) fabricated with
silicon gate C2MOS technology. It has the same
high speed performance of LSTTL combined with
true CMOSlowpower consumption.
The M54/74HC593 consistsof a parallel input, 8bit
storageregister feeding an8bitbinarycounter.Both
the register andthe counter have individual positive
edge-triggered clock.Inaddition, thecounterhasdirectloadandclearfunctions.Expansioniseasilyaccomplished byconnecting RCO offirst stage to the
count enable CCKEN, of the second stage etc.
The M54/74HC593 comes ina20 pin package and
has 3state I/O, which provides parallel counter outputs.
All inputs are equipped with protection circuits
against static discharge and transient excess voltage.
PIN CONNECTIONS(top view)
NC =
No Internal
Connection
October 1993
1/12
M54/M74HC593
INPUT AND OUTPUT EQUIVALENT CIRCUIT
TRUTH TABLE
INPUTS
G G CCLR CCKEN CCKEN CCK CLOAD RCKEN RCK
L H X X X X X X X ALL Q BUS BECOME HIGH Z AND
CAN BE APPLIED ANY DATA
H X X X X X X X X THE OUTPUT DATA OF THE
XL X X X X X X X
X X L X X X H X X COUNTER IS CLEARED TO ZERO
X X H X X X L X X THE DATA OF Q BUS IS LOADED
X X H H X H X X COUNTER ADVANCES THE
XX H X L H X X
X X H H X H X X NO COUNT
XX H X L H X X
X X H L H X H X X NO COUNT
X X X X X X X H X REGISTER DATA IS NOT
X X X X X X X L REGISTER DATA IS NOT
X X X X X X X L THE DATA OF Q BUS IS STORED
X:Don’t Care
RCO= QA’• QB’• QC’ • QD’ • QE’• QF’ • QG’• QH’
(QA’toQH’:Internaloutputs of thecounter)
COUNTER IS ENABLE ON QA
THRU QH
INTO COUNTER
COUNT
CHANGED
CHANGED
INTO REGISTER
FUNCTION
2/12
LOGI C DI AGRAM
M54/M74HC593
3/12
M54/M74HC593
PIN DESC RIPTION
PIN No SYMBOL NAME AND FUNCTION
1, 2, 3, 4,
5, 6, 7, 8
A/QA to
H/QH
Binary Outputs
9 CLOAD Counter Clock Load
Input
11 RCO Ripple Carry Output
12 CCLR Counter Clear Input
13 CCK Counter Clock Input
14, 15 CCKEN,
CCKEN
Counter Clock Enable
Inputs
16 RCK Register Clock Input
17 RCKEN Register Clock Enable
Input
18, 19 G, G Output Enable
10 GND Ground (0V)
20 V
CC
Positive Supply Voltage
ABSOLU TE M AXIMU M R AT INGS
IEC LOGIC SYMBOL
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 beyondwhichdamage tothedevice mayoccur.Functionaloperation under these conditionsisnot implied.
(*)500 mW: ≅ 65oC derateto300 mWby 10mW/oC: 65oCto85oC
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 (RCO)
(QA - QH)
DC VCCor Ground Current ± 70 mA
GND
± 20
± 35
Power Dissipation 500 (*) mW
Storage Temperature -65 to +150
Lead Temperature (10sec) 300
L
mA
o
o
C
C
RECO MM ENDED OPERAT I N G CO NDI TIONS
Symbol Parameter Value Unit
V
T
t
V
V
r,tf
Supply Voltage 2 to 6 V
CC
Input Voltage 0 to V
I
Output Voltage 0 to V
O
Operating Temperature: M54HC Series
op
M74HC Series
CC
CC
-55 to +125
-40 to +85
Input Rise and Fall Time VCC= 2 V 0 to 1000 ns
= 4.5 V 0 to 500
V
CC
V
= 6 V 0 to 400
CC
V
V
o
C
o
C
4/12
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