Freelance Electronics Components Distributor
Closed Dec 25th-26th
800-300-1968
We Stock Hard to Find Parts

DM74LS573N

Part # DM74LS573N
Description IC LATCH OCTAL D-TYPE 3ST 20-DIP
Category IC
Availability Out of Stock
Qty 0
Qty Price
1 + $2.66773



Technical Document


DISCLAIMER: The information provided herein is solely for informational purposes. Customers must be aware of the suitability of this product for their application, and consider that variable factors such as Manufacturer, Product Category, Date Codes, Pictures and Descriptions may differ from available inventory.

© 2000 Fairchild Semiconductor Corporation DS009814 www.fairchildsemi.com
October 1988
Revised March 2000
DM74LS573 Octal D-Type Latch with 3-STATE Outputs
DM74LS573
Octal D-Type Latch with 3-STATE Outputs
General Description
The DM74LS573 is a high speed octal latch with buffered
common Latch Enable (LE) and buffered common Output
Enable (OE
) inputs.
This device is functionally identical to the DM74LS373, but
has different pinouts.
Features
Inputs and outputs on opposite sides of package allow-
ing easy interface with microprocessors
Useful as input or output port for microprocessors
Functionally identical to DM74LS373
Input clamp diodes limit high speed termination effects
Fully TTL and CMOS compatible
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbol
V
CC
= Pin 20
GND = Pin 10
Connection Diagram
Pin Descriptions Function Tables
L = LOW State
H = HIGH State
X = Don't Care
Z = High Impedance State
Q
O
= Previous Condition of O
Order Number Package Number Package Description
DM74LS573WM M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
DM74LS573N N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Pin Names Description
D0–D7 Data Inputs
LE Latch Enable Input (Active HIGH)
OE
3-STATE Output Enable Input (Active LOW)
O0–O7 3-STATE Latch Outputs
Output Latch
D
Output
Enable Enable O
LHHH
LHLL
LLXQ
O
HXXZ
www.fairchildsemi.com 2
DM74LS573
Absolute Maximum Ratings(Note 1)
Note 1: The “Absolute Maximum Ratings” are those values beyond which
the safety of the device cannot be guaranteed. The device should not be
operated at these limits. The parametric values defined in the Electrical
Characteristics tables are not guaranteed at the absolute maximum ratings.
The “Recommended Operating Conditions” table will define the conditions
for actual device operation.
Recommended Operating Conditions
Electrical Characteristics
Over recommended operating free air temperature range (unless otherwise noted)
Note 2: All typicals are at V
CC
= 5V, T
A
= 25°C.
Note 3: Not more than one output should be shorted at a time, and the duration should not exceed one second.
Supply Voltage 7V
Input Voltage 7V
Operating Free Air Temperature Range 0°C to +70°C
Storage Temperature Range 65°C to +150°C
Symbol Parameter Min Nom Max Units
V
CC
Supply Voltage 4.75 5 5.25 V
V
IH
HIGH Level Input Voltage 2 V
V
IL
LOW Level Input Voltage 0.8 V
I
OH
HIGH Level Input Current 2.6 mA
I
OL
LOW Level Output Current 24 mA
T
A
Free Air Operating Temperature 0 70 °C
Symbol Parameter Conditions Min
Typ
Max Units
(Note 2)
V
I
Input Clamp Voltage V
CC
= Min, I
I
= 18 mA 1.5 V
V
OH
HIGH Level V
CC
= Min, I
OH
= Max,
2.7 3.4 V
Output Voltage V
IL
= Max
V
OL
LOW Level V
CC
= Min, I
OL
= Max,
0.35 0.5
Output Voltage V
IH
= Min V
I
OL
= 4 mA, V
CC
= Min 0.25 0.4
I
I
Input Current @ Max Input Voltage V
CC
= Max, V
I
= 7V 1 mA
I
IH
HIGH Level Input Current V
CC
= Max, V
I
= 2.7V 20 µA
I
IL
LOW Level Input Current V
CC
= Max, V
I
= 0.4V 0.4 mA
I
OS
Short Circuit V
CC
= Max
30 130 mA
Output Current (Note 3)
I
CC
Supply Current V
CC
= Max 50 mA
I
OZH
3-STATE Output V
CC
= V
CCH
20 µA
OFF Current HIGH V
OZH
= 2.7V
I
OZL
3-STATE Output V
CC
= V
CCH
20 µA
OFF Current LOW V
OZL
= 0.4V
3 www.fairchildsemi.com
DM74LS573
Switching Characteristics
at V
CC
= 5V and T
A
= 25°C
R
L
= 2 k,
Symbol Parameter
C
L
= 50 pF
Units
Min Max
t
PLH
Propagation Delay 27
ns
t
PHL
Data to Q 18
t
PLH
Propagation Delay 36
ns
t
PHL
LE to Q 25
t
PZH
3-STATE Enable Time 20
ns
t
PZL
OE to Q 25
t
PHZ
3-STATE Enable Time 20
ns
t
PLZ
OE to Q 25
t
S
(H) Setup Time (HIGH/LOW) 3
ns
t
S
(L) Data to LE 7
t
H
(H) Hold Time (HIGH/LOW) 10
ns
t
H
(L) Data to LE 10
t
W
(H) Pulse Width (HIGH)
15 ns
Data to LE
12NEXT