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STMicroelectronics Electronic Components Datasheet

M74HC593 Datasheet

8 BIT BINARY COUNTER WITH INPUT REGISTER 3-STATE

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M74HC593 pdf
M54HC593
M74HC593
8 BIT BINARY COUNTER WITH INPUT REGISTER (3-STATE)
. HIGH SPEED
fMAX = 80 MHz (TYP.) AT VCC = 5 V
. LOW POWER DISSIPATION
ICC = 4 µA (MAX.) AT TA = 25 °C
. OUTPUT DRIVE CAPABILITY
10 LSTTL LOADS FOR RCO
15 LSTTL LOADS FOR Qn
. BALANCED PROPAGATION DELAYS
tPLH = tPHL
. SYMMETRICAL OUTPUT IMPEDANCE
IOL = IOH= 6 mA (MIN.) for Qn
IOL = IOH= 4 mA (MIN.) for RCO
. HIGH NOISE IMMUNITY
VNIH = VNIL = 28 % VCC (MIN.)
. WIDE OPERATING VOLTAGE RANGE
VCC (OPR) = 2 V TO 6 V
. PIN AND FUNCTION COMPATIBLE
WITH 54/74LS593
B1R
(Plastic Package)
F1R
(Ceramic Package)
M 1R
(Micro Package)
C1R
(Chip Carrier)
ORDER CODES :
M 54HC 59 3F 1R
M 74H C5 93 M1 R
M 74HC 59 3B 1R
M 74H C5 93 C1 R
PIN CONNECTIONS (top view)
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 CMOS low power consumption.
The M54/74HC593 consists of a parallel input, 8 bit
storage register feeding an 8 bit binary counter. Both
the register and the counter have individual positive
edge-triggered clock. In addition, the counter has di-
rect load and clear functions. Expansion is easily ac-
complished by connecting RCO of first stage to the
count enable CCKEN, of the second stage etc.
The M54/74HC593 comes in a 20 pin package and
has 3 state I/O, which provides parallel counter out-
puts.
All inputs are equipped with protection circuits
against static discharge and transient excess volt-
age.
NC =
No Internal
Connection
October 1993
1/12


STMicroelectronics Electronic Components Datasheet

M74HC593 Datasheet

8 BIT BINARY COUNTER WITH INPUT REGISTER 3-STATE

No Preview Available !

M74HC593 pdf
M54/M74HC593
INPUT AND OUTPUT EQUIVALENT CIRCUIT
TRUTH TABLE
GG
LH
CCLR
X
CCKEN
X
INPUTS
CCKEN CCK
XX
CLOAD
X
HX
X
X
XXX
XL
X
X
XXX
XX
L
X
XXH
XX
H
X
XX L
XX
H
H
X
H
XX
H
X
L
H
XX
H
H
X
H
XX
H
X
L
H
XX
H
L
HXH
XX
X
X
XXX
XX
X
X
XXX
XX
X
X
XXX
X: Don’t Care
RCO = QA’ QB’ QC’ QD’ QE’ QF’ QG’ QH’
(QA’ to QH’: Internal outputs of the counter)
RCKEN
X
X
X
RCK
X
X
X
FUNCTION
ALL Q BUS BECOME HIGH Z AND
CAN BE APPLIED ANY DATA
THE OUTPUT DATA OF THE
COUNTER IS ENABLE ON QA
THRU QH
X X COUNTER IS CLEARED TO ZERO
X X THE DATA OF Q BUS IS LOADED
INTO COUNTER
X X COUNTER ADVANCES THE
X X COUNT
X X NO COUNT
XX
X X NO COUNT
H X REGISTER DATA IS NOT
CHANGED
L REGISTER DATA IS NOT
CHANGED
L THE DATA OF Q BUS IS STORED
INTO REGISTER
2/12


Part Number M74HC593
Description 8 BIT BINARY COUNTER WITH INPUT REGISTER 3-STATE
Maker ST Microelectronics
Total Page 12 Pages
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