74F398SC NSC [National Semiconductor], 74F398SC Datasheet

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74F398SC

Manufacturer Part Number
74F398SC
Description
Quad 2-Port Register
Manufacturer
NSC [National Semiconductor]
Datasheet
C 1995 National Semiconductor Corporation
54F 74F398 54F 74F399
Quad 2-Port Register
General Description
The ’F398 and ’F399 are the logical equivalents of a quad
2-input multiplexer feeding into four edge-triggered flip-
flops A common Select input determines which of the two
4-bit words is accepted The selected data enters the flip-
flops on the rising edge of the clock The ’F399 is the 16-pin
version of the ’F398 with only the Q outputs of the flip-flops
available
Connection Diagrams
TRI-STATE is a registered trademark of National Semiconductor Corporation
Note 1 Devices also available in 13 reel Use suffix
Note 2 Military grade device with environmental and burn-in processing Use suffix
74F398PC
74F398SC (Note 1)
74F399PC
74F399SC (Note 1)
74F399SJ (Note 1)
Commercial
Pin Assignment
for LCC
54F398DM (Note 2)
54F398FM (Note 2)
54F398LM (Note 2)
54F399DM (Note 2)
54F399FM (Note 2)
54F399LM (Note 2)
TL F 9533
Military
e
SCX and SJX
TL F 9533 – 5
Package
N20A
J20A
M20B
W20A
E20A
N20A
J20A
M20B
M20D
W20A
E20A
Number
’F398
Features
Y
Y
Y
Y
20-Lead (0 300 Wide) Molded Dual-In-Line
20-Lead Ceramic Dual-In-Line
20-Lead (0 300 Wide) Molded Small Outline JEDEC
20-Lead Cerpack
20-Lead Ceramic Leadless Chip Carrier Type C
20-Lead (0 300 Wide) Molded Dual-In-Line
20-Lead Ceramic Dual-In-Line
20-Lead (0 300 Wide) Molded Small Outline JEDEC
20-Lead (0 300 Wide) Molded Small Outline EIAJ
20-Lead Cerpack
20-Lead Ceramic Leadless Chip Carrier Type C
Select inputs from two data sources
Fully positive edge-triggered operation
Both true and complement outputs ’F398
Guaranteed 4000V minimum ESD protection ’F399
e
DMQB FMQB and LMQB
for DIP SOIC and Flatpak
Package Description
Pin Assignment
RRD-B30M75 Printed in U S A
TL F 9533 – 6
May 1995

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74F398SC Summary of contents

Page 1

... The selected data enters the flip- flops on the rising edge of the clock The ’F399 is the 16-pin version of the ’F398 with only the Q outputs of the flip-flops available Commercial Military 74F398PC 54F398DM (Note 2) 74F398SC (Note 1) 54F398FM (Note 2) 54F398LM (Note 2) 74F399PC 54F399DM (Note 2) 74F399SC (Note 1) 74F399SJ (Note 1) 54F399FM (Note 2) ...

Page 2

Connection Diagrams (Continued) Logic Symbols ’F398 ’F399 Unit Loading Fan Out Pin Names Description S Common Select Input CP Clock Pulse Input (Active Rising Edge) I –I Data Inputs from Source –I Data Inputs from Source ...

Page 3

Functional Description The ’F398 and ’F399 are high-speed quad 2-port registers They select four bits of data from either of two sources (Ports) under control of a common Select input (S) The selected data is transferred to a 4-bit output ...

Page 4

Absolute Maximum Ratings If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Storage Temperature b Ambient Temperature under Bias b Junction Temperature under Bias b Plastic b V Pin Potential ...

Page 5

AC Electrical Characteristics Symbol Parameter Min f Input Clock Frequency 100 max t Propagation Delay 3 0 PLH PHL ’F398 Operating Requirements Symbol Parameter t (H) Setup Time ...

Page 6

Ordering Information The device number is used to form part of a simplified purchasing code where the package type and temperature range are defined as follows Temperature Range Family 74F Commercial e 54F Military e Device Type Package Code P ...

Page 7

Physical Dimensions inches (millimeters) 20-Lead Ceramic Leadless Chip Carrier (L) 20-Lead Ceramic Dual-In-Line Package (D) NS Package Number E20A NS Package Number J20A 7 ...

Page 8

Physical Dimensions inches (millimeters) (Continued) 20-Lead (0 300 Wide) Molded Small Outline Package JEDEC (S) 20-Lead (0 300 Wide) Molded Small Outline Package EIAJ (SJ) NS Package Number M20B NS Package Number M20D 8 ...

Page 9

Physical Dimensions inches (millimeters) (Continued) 20-Lead (0 300 Wide) Molded Dual-In-Line Package (P) NS Package Number N20A 9 ...

Page 10

Physical Dimensions inches (millimeters) (Continued) LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMICONDUCTOR CORPORATION As used herein 1 ...

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