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National Semiconductor Electronic Components Datasheet

5497DMQB Datasheet

Synchronous Modulo-64 Bit Rate Multiplier

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5497 DM7497
Synchronous Modulo-64 Bit Rate Multiplier
General Description
The ’97 contains a synchronous 6-stage binary counter and
six decoding gates that serve to gate the clock through to
the output at a sub-multiple of the input frequency The out-
put pulse rate relative to the clock frequency is determined
by signals applied to the Select (S0–S5) inputs Both true
and complement outputs are available along with an enable
input for each A Count Enable input and a Terminal Count
output are provided for cascading two or more packages
An asynchronous Master Reset input prevents counting and
resets the counter
Connection Diagram
Logic Symbol
Dual-In-Line Package
June 1989
TL F 9780 – 1
Order Number 5497DMQB 5497FMQB or DM7497N
See NS Package Number J16A N16E or W16A
VCC e Pin 16
GND e Pin 8
Pin Names
S0 – S5
EZ
EY
CE
CP
MR
OZ
Oy
TC
Description
Rate Select Inputs
OZ Enable Input (Active LOW)
OY Enable Input
Count Enable Input (Active LOW)
Clock Pulse Input (Active Rising Edge)
Asynchronous Master Reset Input (Active HIGH)
Gated Clock Output (Active LOW)
Complement Output (Active HIGH)
Terminal Count Output (Active LOW)
TL F 9780 – 2
C1995 National Semiconductor Corporation TL F 9780
RRD-B30M115 Printed in U S A


National Semiconductor Electronic Components Datasheet

5497DMQB Datasheet

Synchronous Modulo-64 Bit Rate Multiplier

No Preview Available !

Absolute Maximum Ratings (Note)
If Military Aerospace specified devices are required
please contact the National Semiconductor Sales
Office Distributors for availability and specifications
Supply Voltage
7V
Input Voltage
5 5V
Operating Free Air Temperature Range
54 b55 C to a125 C
DM74
0 C to a70 C
Storage Temperature Range
b65 C to a150 C
Note The ‘‘Absolute Maximum Ratings’’ are those values
beyond which the safety of the device cannot be guaran-
teed 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 acutual device operation
Recommended Operating Conditions
Symbol
VCC
VIH
VIL
IOH
IOL
TA
ts(L)
th(H)
th(L)
tw(H)
tw(L)
tw(H)
Parameter
Supply Voltage
High Level Input Voltage
Low Level Input Voltage
High Level Output Current
Low Level Output Current
Free Air Operating Temperature
Setup Time LOW CE to CP Rising
Hold Time HIGH CE to CP Rising
Hold Time LOW CE to CP Falling
CP Pulse Width HIGH
CP Pulse Width LOW
MR Pulse Width HIGH
Min
45
2
b55
25
0
0
20
20
15
5497
Nom
5
Max
55
08
b0 4
16
125
Min
4 75
2
0
25
0
0
20
DM7497
Nom
5
Max
5 25
08
b0 4
16
70
15
Units
V
V
V
mA
mA
C
ns
ns
ns
ns
ns
ns
Electrical Characteristics Over recommended operating free air temperature range (unless otherwise noted)
Symbol
VI
VOH
VOL
II
IIH
IIL
IOS
ICC
Parameter
Input Clamp Voltage
High Level Output
Voltage
Low Level Output
Voltage
Input Current Max
Input Voltage
High Level Input Current
Low Level Input Current
Short Circuit
Output Current
Supply Current With
Outputs High
Conditions
VCC e Min II e b12 mA
VCC e Min IOH e Max
VIL e Max
VCC e Min IOL e Max
VIH e Min
VCC e Max VI e 5 5V
VCC e Max VI e 2 4V
Clock Inputs
VCC e Max VI e 0 4V
Clock Inputs
VCC e Max
(Note 2)
VCC e Max
DM74
54
DM74
54
54
DM74
Min
24
b20
b18
Typ
(Note 1)
34
02
Max
b1 5
04
1
40
80
b1 6
b3 2
b55
b55
120
Units
V
V
V
mA
mA
mA
mA
mA
2


Part Number 5497DMQB
Description Synchronous Modulo-64 Bit Rate Multiplier
Maker National Semiconductor
Total Page 8 Pages
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