NSC DM74LS564 Octal d-type flip-flop with tri-state output Datasheet

DM74LS564
Octal D-Type Flip-Flop with TRI-STATEÉ Outputs
General Description
Features
The ’LS564 is a high speed low power octal flip-flop with a
buffered common Clock (CP) and a buffered common Output Enable (OE). The information presented to the D inputs
is stored in the flip-flops on the LOW-to-HIGH Clock (CP)
transition
This device is functionally identical to the ’LS574, but has
inverted outputs. For complete discussions of operations,
truth tables, AC and DC electrical specifications, refer to the
’LS374 data sheet.
Y
Connection Diagram
Logic Symbol
Y
Y
Y
Y
Inputs and outputs on opposite sides of package allowing easy interface with microprocessors
Useful as input or output port for microprocessors
Functionally identical to ’LS574
Input clamp diodes limit high speed termination effects
Fully TTL and CMOS compatible
Dual-In-Line Package
TL/F/10191 – 2
VCC e Pin 20
GND e Pin 10
TL/F/10191 – 1
Order Number DM74LS564WM or DM74LS564N
See NS Package Number M20B or N20A
Pin Names
D0–D7
CP
OE
O0 – O7
Description
Data Inputs
Clock Pulse Input (Active Rising Edge)
TRI-STATEÉ Output Enable Input
(Active LOW)
TRI-STATE Outputs
TRI-STATEÉ is a registered trademark of National Semiconductor Corporation.
C1995 National Semiconductor Corporation
TL/F/10191
RRD-B30M105/Printed in U. S. A.
DM74LS564 Octal D-Type Flip-Flop with TRI-STATE Outputs
February 1992
Absolute Maximum Ratings (Note)
Note: 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’’
table are not guaranteed at the absolute maximum ratings.
The ‘‘Recommended Operating Conditions’’ table will define
the conditions for actual device operation.
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Supply Voltage
Input Voltage
Operating Free Air Temperature Range
DM74LS
7V
7V
0§ C to a 70§ C
b 65§ C to a 150§ C
Storage Temperature Range
Recommended Operating Conditions
Symbol
DM74LS564
Parameter
VCC
Supply Voltage
VIH
High Level Input Voltage
VIL
Low Level Input Voltage
Units
Min
Nom
Max
4.75
5
5.25
V
2
V
0.8
V
mA
IOH
High Level Output Current
b 2.6
IOL
Low Level Output Current
24
mA
TA
Free Air Operating Temperature
70
§C
0
Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted)
Symbol
Parameter
Conditions
Min
Typ
(Note 1)
Max
Units
b 1.5
V
VI
Input Clamp Voltage
VCC e Min, II e b18 mA
VOH
High Level Output
Voltage
VCC e Min, IOH e Max,
VIL e Max
VOL
Low Level Output
Voltage
VCC e Min, IOL e Max,
VIH e Min
0.35
0.5
IOL e 12 mA, VCC e Min
0.25
0.4
II
Input Current @ Max
Input Voltage
VCC e Max, VI e 7V
IIH
High Level Input Current
VCC e Max, VI e 2.7V
20
mA
IIL
Low Level Input Current
VCC e Max, VI e 0.4V
b 0.4
mA
IOS
Short Circuit
Output Current
VCC e Max
(Note 2)
b 130
mA
ICC
Supply Current
VCC e Max
60
mA
IOZH
TRI-STATE Output OFF
Current HIGH
VCC e Max, VO e 2.4V
20
mA
IOZL
TRI-STATE Output OFF
Current LOW
VCC e Max, VO e 0.4V
b 20
mA
2.4
V
0.1
b 30
Note 1: All typicals are at VCC e 5V, TA e 25§ C.
Note 2: Not more than one output should be shorted at a time, and the duration should not exceed one second.
2
3.4
V
mA
Switching Characteristics
VCC e a 5.0V, TA e a 25§ C
Symbol
Parameter
Min
Max
Units
tPLH
tPHL
Propagation Delay
CP to On
28
28
ns
tPZH
tPZL
Enable Time
OE to On
28
28
ns
tPHZ
tPLZ
Enable Time
OE to On
20
25
ns
ts
Setup Time
Dn to CP
20
ns
th
Hold Time
Dn to CP
5
ns
tw (H)
tw (L)
Pulse Width
(HIGH/LOW) CP
20
15
ns
Physical Dimensions inches (millimeters)
20-Lead Wide Small Outline Molded Package (M)
Order Number DM74LS564WM
NS Package Number M20B
3
DM74LS564 Octal D-Type Flip-Flop with TRI-STATE Outputs
Physical Dimensions inches (millimeters) (Continued)
20-Lead Molded Dual-In-Line Package (N)
Order Number DM74LS564N
NS Package Number N20A
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