1/15
August 2001
s
HIGH SPEED:
f
MAX
= 61 MHz (TYP.) at V
CC
= 6V
s
LOW POWER DISSIPATION:
I
CC
= 4
A(MAX.) at T
A
=25C
s
HIGH NOISE IMMUNITY:
V
NIH
= V
NIL
= 28 % V
CC
(MIN.)
s
SYMMETRICAL OUTPUT IMPEDANCE:
|I
OH
| = I
OL
= 6mA (MIN) for QA ~ QH OUTPUT
|I
OH
| = I
OL
= 4mA (MIN) for RCO OUTPUT
s
BALANCED PROPAGATION DELAYS:
t
PLH
t
PHL
s
WIDE OPERATING VOLTAGE RANGE:
V
CC
(OPR) = 2V to 6V
s
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 590
DESCRIPTION
The M74HC590 is an high speed CMOS 8-BIT
BINARY COUNTER REGISTER (3 STATE)
fabricated with silicon gate C
2
MOS technology.
This device contains an 8-bit binary counter that
feeds an 8-bit storage register. The storage
register 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 positive
edge triggered. If the user wishes to connect both
clocks together, the counter state will always be
one count ahead of the register. Internal circuitry
prevents clocking from the clock enable. All inputs
are equipped with protection circuits against static
discharge and transient excess voltage.
M74HC590
8 BINARY COUNTER REGISTER
WITH 3 STATE OUTPUT
PIN CONNECTION AND IEC LOGIC SYMBOLS
ORDER CODES
PACKAGE
TUBE
T & R
DIP
M74HC590B1R
SOP
M74HC590M1R
M74HC590RM13TR
TSSOP
M74HC590TTR
TSSOP
DIP
SOP
M74HC590
2/15
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
TRUTH TABLE
X: Don't Care
RCO = QA'QB'QC'QD'QE'QF'QG'QH' (QA' to QH' : INTERNAL OUTPUTS OF THE COUNTER)
LOGIC DIAGRAM
PIN No
SYMBOL
NAME AND FUNCTION
1, 2, 3, 4, 5,
6, 7, 15
QA to QH
Outputs
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
INPUTS
OUTPUT
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 STAGE 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
M74HC590
5/15
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied
(*) 500mW at 65
C; derate to 300mW by 10mW/
C from 65
C to 85
C
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Value
Unit
V
CC
Supply Voltage
-0.5 to +7
V
V
I
DC Input Voltage
-0.5 to V
CC
+ 0.5
V
V
O
DC Output Voltage
-0.5 to V
CC
+ 0.5
V
I
IK
DC Input Diode Current
20
mA
I
OK
DC Output Diode Current
20
mA
I
O
DC Output Source Sink Current per Output PIN (RCO)
(QA - QH)
25
35
mA
I
CC
or I
GND
DC V
CC
or Ground Current
70
mA
P
D
Power Dissipation
500(*)
mW
T
stg
Storage Temperature
-65 to +150
C
T
L
Lead Temperature (10 sec)
300
C
Symbol
Parameter
Value
Unit
V
CC
Supply Voltage
2 to 6
V
V
I
Input Voltage
0 to V
CC
V
V
O
Output Voltage
0 to V
CC
V
T
op
Operating Temperature
-55 to 125
C
t
r
, t
f
Input Rise and Fall Time
V
CC
= 2.0V
0 to 1000
ns
V
CC
= 4.5V
0 to 500
ns
V
CC
= 6.0V
0 to 400
ns
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