SGS Thomson Microelectronics M74HC590 Datasheet
8 BIT BINARY COUNTER REGISTER (3 STATE)
.HIGH SPEED
f
= 62 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 (forRCO)
15 LSTTL LOADS (forQA ∼ QH)
.SYMMETRICAL OUTPUT IMPEDANCE
IOH=IOL= 6 mA(MIN.)FORQA~QHOUTPUT
IOH= IOL= 4 mA(MIN.) FOR RCO OUTPUT
.BALANCEDPROPAGATION DELAYS
t
PLH=tPHL
.WIDE OPERATING VOLTAGE RANGE
VCC(OPR)= 2 V TO 6 V
.PIN AND FUNCTION COMPATIBLE
WITH 54/74LS590
M54HC590
M74HC590
B1R
(PlasticPackage)
M1R
(MicroPackage)
ORDER CODES :
M54HC 590F1R M74H C590M1R
M74HC 590B1R M74HC5 90C1R
F1R
(CeramicPackage)
C1R
(Chip Carrier)
DESCRIPTION
The M54/74HC590 is a highspeedCMOS8-BITBINARY COUNTER REGISTER (3-STATE) fabricated in silicongate C2MOS technology.It hasthe
same high speed performance of LSTTLcombined
with true CMOS low power consumption.
Thesedeviceseach contain an 8-bit binary counter
thatfeeds an8-bit storage register.Thestorageregister has parallel outputs. Separate clocks are provided for both the binary counter and storage
register. The binary counter features a direct clear
input CCLR and a count enable input CCKEN. For
cascading, a ripple carry output RCO is provided.
Expansion is easily accomplished by tying RCO of
the first stage to CCKEN of the second stage, etc.
Both the counter and register clocks are positiveedge triggered. If the user wishes to connect both
clockstogether, thecounter statewillalwaysbeone
count ahead of the register. Internal circuitry preventsclocking fromthe clock enable.
All inputs are equipped with protection circuits
against static discharge and transient excess voltage.
PIN CONNECTIONS(top view)
NC =
No Internal
Connection
March1993
1/14
M54/M74HC590
INPUT AND OUTPUT EQUIVALENT CIRCUIT
TRUTH TABLE
INPUTS
G RCK CCLR CCKEN CCK
H X X X X Q OUTPUTS DISABLE
L X X X X Q OUTPUTS ENABLE
X X X X COUNTER DATA IS STORED INTO REGISTER
X X X X REGISTER STATE IS NOT CHANGED
X X L X X COUNTER CLEAR
X X H L ADVANCE ONE COUNT
X X H L NO COUNT
X X H H X NO COUNT
X:DON’TCARE
RCO= QA’• QB’• QC’• QD’ • QE’ •QF’ • QG’• QH’ (QA’to QH’:INTERNALOUTPUTS OFTHE COUNTER)
OUTPUT
LOGIC DIAGRAM
2/14
LOGIC DIAGRAM
M54/M74HC590
3/14
M54/M74HC590
TIMING CHART
4/14
M54/M74HC590
PIN DESCRIPTION
IEC LOGIC SYMBOL
PIN No SYMBOL NAME AND FUNCTION
1, 2, 3, 4, 5,
QA to QH Outputs
6, 7, 15
11 CCK Counter Clock Input
12 CCKEN Counter Clock Enable
Input
13 RCK Register Clock Input
9 RCO Ripple Carry Output
14 G Output Enable Input
10 CCLR Counter Clear Input
8 GND Ground (0V)
16 V
CC
Positive Supply Voltage
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 beyondwhichdamagetothedevicemayoccur. Functionaloperation under theseconditionisnotimplied.
(*)500 mW:≅ 65oC derate to300 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
±25
± 35
Power Dissipation 500 (*) mW
Storage Temperature -65 to +150
Lead Temperature (10 sec) 300
L
mA
o
o
C
C
RECO MM ENDED OPERAT I N G CO NDI TIONS
Symbol Parameter Value Unit
V
V
T
t
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
V
= 4.5 V 0 to 500
CC
V
= 6 V 0 to 400
CC
V
V
o
C
o
C
5/14
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