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National Semiconductor Electronic Components Datasheet


93L28FMQB

Dual 8-Bit Shift Register


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93L28FMQB pdf
June 1989
93L28
Dual 8-Bit Shift Register
General Description
The 93L28 is a high speed serial storage element providing
16 bits of storage in the form of two 8-bit registers The
multifunctional capability of this device is provided by sever-
al features 1) additional gating is provided at the input to
both shift registers so that the input is easily multiplexed
between two sources 2) the clock of each register may be
provided separately or together 3) both the true and com-
plementary outputs are provided from each 8-bit register
and both registers may be master cleared from a common
input
Features
Y 2-input multiplexer provided at data input of each
register
Y Gated clock input circuitry
Y Both true and complementary outputs provided from
last bit of each register
Y Asynchronous master reset common to both registers
Connection Diagram
Dual-In-Line Package
Logic Symbol
TL F 10200 – 1
Order Number 93L28DMQB or 93L28FMQB
See NS Package Number J16A or W16A
VCC e Pin 16
GND e Pin 8
Pin
Names
S
D0 D1
CP
MR
Q7
Q7
Description
Data Select Input
Data Inputs
Clock Pulse Input (Active HIGH)
Common (Pin 9)
Separate (Pins 7 and 10)
Master Reset Input (Active LOW)
Last Stage Output
Complementary Output
TL F 10200 – 2
C1995 National Semiconductor Corporation TL F 10200
RRD-B30M105 Printed in U S A



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93L28FMQB pdf
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
MIL b55 C to a125 C
Storage Temperature Range
b65 C to a150 C
Recommended Operating Conditions
Symbol
Parameter
VCC
VIH
VIL
IOH
IOL
TA
ts(H)
ts(L)
th(H)
th(L)
tw(H)
tw(L)
tw(L)
tw(L)
Supply Voltage
High Level Input Voltage
Low Level Input Voltage
High Level Output Current
Low Level Output Current
Free Air Operating Temperature
Setup Time HIGH or LOW
Dn to CP
Hold Time HIGH or LOW
Dn to CP
Clock Pulse Width
HIGH or LOW
MR Pulse Width with CP HIGH
MR Pulse Width with CP LOW
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 actual device operation
Min
45
2
b55
30
30
0
0
55
55
60
70
93L28 (MIL)
Nom
5
Max
55
07
b400
48
125
Units
V
V
V
mA
mA
C
ns
ns
ns
ns
ns
2



Part Number 93L28FMQB
Description Dual 8-Bit Shift Register
Maker National Semiconductor - National Semiconductor
Total Page 6 Pages
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