Page 1
M74HCT573
OCTAL D-TYPE LATCH
WITH 3 STATE OUTPUT NON INVERTING
■ HIGH SPEED:
t
= 21ns (TYP.) at VCC = 4.5V
PD
■ LOW POWER DISSIPATION:
I
= 4µA(MAX.) at TA=25°C
CC
■ COMPA TIBLE WITH TTL OUTPUTS :
V
= 2V (MIN.) VIL = 0.8V (MAX)
IH
■ BALANCED PROPAGATION DELAYS:
t
≅ t
PLH
■ SYMMETRICAL OUTPUT IMPEDANCE:
|I
OH
■ PIN AND FUNCTION COMPATIBLE WITH
PHL
| = IOL = 6mA (MIN)
74 SERIES 573
DESCRIPTION
The M74HCT573 is an high speed CMOS OCTAL
LATCH WITH 3-STATE OUTPUTS fabricated
with silicon gate C
2
MOS technology.
This 8-BIT D-Type la tches is controlled by a latc h
enable input (LE) and output enable input (OE
).
While the LE in put is held at a high level, the Q
outputs will follow the data input precisely. Wh en
the LE is taken low, the Q outputs will be latched
precisely at the logic level of D input data.
While the OE
input is at low level, the eight outputs
will be in a norm al logic state (high or low logic
level) and while OE
is at high level the outputs will
be in a high impedance state.
TSSOPDIP SOP
ORDER CODES
PACKAGE TUBE T & R
DIP M74HCT573B1R
SOP M74HCT573M1R M74HCT573RM13TR
TSSOP M74HCT573TTR
The 3-State output configuration and the wide
choice of outline make bus organized system
simple.
The M74HCT573 is designed to directly interface
2
HSC
MOS systems with TTL and NMOS
components.
All inputs are equipped with protection circuits
against static discharge and transient excess
voltage.
PIN CONNECTION AND IEC LOGIC SYMBOLS
1/11July 2001
Page 2
M74HCT573
INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION
PIN No SYMBOL NAME AND FUNCTION
1OE
2, 3, 4, 5, 6,
7, 8, 9
12, 13, 14,
15, 16, 17,
18, 19
11 LE Latch Enable Input
10 GND Ground (0V)
20 V
TRUTH TABLE
INPUTS OUTPUTS
D0 to D7 Data Inputs
Q0 to Q7 3 State Latch Outputs
CC
3 State Output Enable
Input (Active LOW)
Positive Supply Voltage
OE
HXXZ
L L X NO CHANGE (*)
LHLL
LHHH
X: Don’t Care
Z: High Impedance
(*): Q Outputs are lat ched at the time when the LE i nput is taken lo w l ogic level.
LE D Q
LOGIC DIAGRAM
2/11
Page 3
M74HCT573
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
V
V
I
I
OK
I
I
or I
CC
P
T
T
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
RECOMMENDED OPERATING CONDITIONS
Symbol Parameter Value Unit
V
V
V
T
t
r
Supply Voltage
CC
DC Input Voltage -0.5 to VCC + 0.5
I
DC Output Voltage -0.5 to VCC + 0.5
O
DC Input Diode Current
IK
DC Output Diode Current
DC Output Current
O
DC VCC or Ground Current
GND
Power Dissipation
D
Storage Temperature
stg
Lead Temperature (10 sec)
L
°C; derate to 300mW by 10mW/°C from 65° C to 85°C
Supply Voltage
CC
Input Voltage 0 to V
I
Output Voltage 0 to V
O
Operating Temperature
op
, t
Input Rise and Fall Time (VCC = 4.5 to 5.5V)
f
-0.5 to +7 V
± 20 mA
± 20 mA
± 35 mA
± 70 mA
500(*) mW
-65 to +150 °C
300 °C
4.5 to 5.5 V
CC
CC
-55 to 125 °C
0 to 500 ns
V
V
V
V
3/11
Page 4
M74HCT573
DC SPECIFICATIONS
Symbol Parameter
V
V
V
V
I
I
∆ I
High Level Input
IH
Voltage
Low Level Input
IL
Voltage
High Level Output
OH
Voltage
Low Level Output
OL
Voltage
I
Input Leakage
I
Current
High Impedance
OZ
Output Leakage
Current
Quiescent Supply
CC
Current
Additional Worst
CC
Case Supply
Current
Test Condition Value
T
= 25°C
V
CC
(V)
A
Min. Typ. Max. Min. Max. Min. Max.
4.5
to
2.0 2.0 2.0 V
5.5
4.5
to
0.8 0.8 0.8 V
5.5
4.5
4.5
5.5
5.5
5.5
IO=-20 µA
I
=-6.0 mA
O
IO=20 µA
I
=6.0 mA
O
= VCC or GND
V
I
= VIH or V
V
I
VO = VCC or GND
= VCC or GND
V
I
5.5 Per Input pin
= 0.5V or
V
I
V
= 2.4V
I
4.4 4.5 4.4 4.4
4.18 4.31 4.13 4.10
0.0 0.1 0.1 0.1
0.17 0.26 0.33 0.40
± 0.1 ± 1 ± 1 µA
IL
± 0.5 ± 5 ± 10 µA
2.0 2.9 3.0 mA
Other Inputs at
V
or GND
CC
-40 to 85°C -55 to 125°C
Unit
V
V
44080µA
AC ELECTRICAL CHARACTERISTICS (C
Test Condition Value
Symbol Parameter
t
TLH tTHL
t
PLH tPHL
t
PLH tPHL
t
PZL tPZH
t
PLZ tPHZ
t
W(L)
t
W(H)
Output Transition
Time
Propagation Delay
Time (LE - Q,Q
Propagation Delay
Time (D - Q,Q
Output Enable
Time
Output Disable
Time
Minimum Pulse
Width (LE)
Minimum Set-Up
t
s
Time
Minimum Hold
t
h
Time
)
V
C
(pF)
L
CC
(V)
4.5 50 7 12 15 18 ns
4.5 50 21 33 41 50
)
4.5 150 25 39 49 59
4.5 50 19 30 38 45
4.5 150 23 36 45 54
4.5 50
4.5 150 23 36 45 54
4.5 50
4.5 50 7 15 19 22 ns
4.5 50 4 10 13 15 ns
4.5 50 5 5 5 ns
= 50 pF, Input tr = tf = 6ns)
L
= 25°C
T
A
Min. Typ. Max. Min. Max. Min. Max.
= 1 KΩ
R
L
= 1 KΩ
R
L
19 30 38 45
18 25 31 38 ns
-40 to 85°C -55 to 125°C
Unit
ns
ns
ns
4/11
Page 5
M74HCT573
CAPACITIVE CHARACTERISTICS
Test Condition Value
T
Symbol Parameter
C
C
C
Input Capacitance
IN
Output
OUT
Capacitance
Power Dissipation
PD
Capacitance (note
V
CC
(V)
= 25°C
A
Min. Typ. Max. Min. Max. Min. Max.
5101010pF
10 pF
51 pF
1)
1) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without
load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. I
Flop)
TEST CIRCUIT
-40 to 85°C -55 to 125°C
= CPD x VCC x fIN + ICC/8 (per Flip
CC(opr)
Unit
TEST SWITCH
t
, t
PLH
PHL
, t
t
PZL
PLZ
t
, t
PZH
PHZ
CL = 50pF/150p F or equivalent (includes jig and probe capacitance)
R
= 1KΩ or equivalent
1
= Z
R
of pulse generator (typically 50Ω)
T
OUT
Open
V
CC
GND
5/11
Page 6
M74HCT573
WAVEFORM 1: LE TO Qn PROPAGATION DELAYS, LE MINIMUM PULSE WIDTH, Dn TO LE SETUP
AND HOLD TIMES (f=1MHz; 50% duty cycle)
6/11
Page 7
WAVEFORM 2: OUTPUT ENABLE AND DISABLE TIMES (f=1MHz; 50% duty cycl e )
M74HCT573
WAVEFORM 3: PROPAGATION DELAY TIMES (f=1MHz; 50% duty cycle)
7/11
Page 8
M74HCT573
Plastic DIP-20 (0.25) MECHANICAL DATA
mm. inch
DIM.
MIN. TYP M AX. MIN. TYP. MAX.
a1 0.254 0.010
B 1.39 1.65 0.055 0.065
b 0.45 0.018
b1 0.25 0.010
D 25.4 1.000
E 8.5 0.335
e 2.54 0.100
e3 22.86 0.900
F 7.1 0.280
I 3.93 0.155
L 3.3 0.130
Z 1.34 0.053
8/11
P001J
Page 9
SO-20 MECHANICAL DATA
M74HCT573
DIM.
MIN. TYP M AX. MIN. TYP. MAX.
A 2.65 0.104
a1 0.1 0.2 0.004 0.008
a2 2.45 0.096
b 0.35 0.49 0.014 0.019
b1 0.23 0.32 0.009 0.012
C 0.5 0.020
c1 45° (typ.)
D 12.60 13.00 0.496 0.512
E 10.00 10.65 0.393 0.419
e 1.27 0.050
e3 11.43 0.450
F 7.40 7.60 0.291 0.300
L 0.50 1.27 0.020 0.050
M 0.75 0.029
S8° (max.)
mm. inch
PO13L
9/11
Page 10
M74HCT573
TSSOP20 MECHANICAL DATA
mm. inch
DIM.
MIN. TYP M AX. MIN. TYP. MAX.
A 1.2 0.047
A1 0.05 0.15 0.002 0.004 0.006
A2 0.8 1 1.05 0.031 0.039 0.041
b 0.19 0.30 0.007 0.012
c 0.09 0.20 0.004 0.0089
D 6.4 6.5 6.6 0.252 0.256 0.260
E 6.2 6.4 6.6 0.244 0.252 0.260
E1 4.3 4.4 4.48 0.169 0.173 0.176
e 0.65 BSC 0.0256 BSC
K0° 8°0° 8°
L 0.45 0.60 0.75 0.018 0.024 0.030
A2
A
A1
b
e
K
c
L
E
D
E1
PIN 1 IDENTIFICATION
10/11
1
0087225C
Page 11
M74HCT573
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