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74F648SDMSAMQB Datasheet(Fiches technique) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Numéro de pièce 74F648SDMSAMQB
Description  Octal Transceiver/Register with TRI-STATE Outputs
Télécharger  12 Pages
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Fabricant  NSC [National Semiconductor (TI)]
Site Internet  http://www.national.com
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TLF9580
December 1994
54F74F646
 74F646B  54F74F648
Octal TransceiverRegister with TRI-STATE
Outputs
General Description
These devices consist of bus transceiver circuits with TRI-
STATE D-type flip-flops and control circuitry arranged for
multiplexed transmission of data directly from the input bus
or from the internal registers Data on the A or B bus will be
clocked into the registers as the appropriate clock pin goes
to a high logic level Control G and direction pins are provid-
ed to control the transceiver function In the transceiver
mode data present at the high impedance port may be
stored in either the A or the B register or in both The select
controls can multiplex stored and real-time (transparent
mode) data The direction control determines which bus will
receive data when the enable control G is Active LOW In
the isolation mode (control G HIGH) A data may be stored
in the B register andor B data may be stored in the A regis-
ter
Features
Y
Independent registers for A and B buses
Y
Multiplexed real-time and stored data
Y
’F648 has inverting data paths
Y
’F646’F646B have non-inverting data paths
Y
’F646B is a faster version of the ’F646
Y
TRI-STATE outputs
Y
300 mil slim DIP
Y
Guaranteed 4000V minimum ESD protection
Commercial
Military
Package
Package Description
Number
74F646SPC
N24C
24-Lead (0300 Wide) Molded Dual-In-Line
54F646DM (Note 2)
J24F
24-Lead (0300 Wide) Ceramic Dual-In-Line
74F646SC (Note 1)
M24B
24-Lead (0300 Wide) Molded Small Outline JEDEC
74F646MSA (Note 1)
MSA24
24-Lead Molded Shrink Small Outline EIAJ Type II
54F646FM (Note 2)
W24C
24-Lead Cerpack
54F646LM (Note 2)
E28A
28-Lead Ceramic Leadless Chip Carrier Type C
74F646BSPC
N24C
24-Lead (0300 Wide) Molded Dual-In-Line
74F646BSC (Note 1)
M24B
24-Lead (0300 Wide) Molded Small Outline JEDEC
74F648SPC
N24C
24-Lead (0300 Wide) Molded Dual-In-Line
54F648SDM (Note 2)
J24F
24-Lead (0300 Wide) Ceramic Dual-In-Line
74F648SC (Note 1)
M24B
24-Lead (0300 Wide) Molded Small Outline JEDEC
54F648FM (Note 2)
W24C
24-Lead Cerpack
54F648LM (Note 2)
E28A
24-Lead Ceramic Leadless Chip Carrier Type C
Note 1
Devices also available in 13
reel Use suffix e SCX
Note 2
Military grade device with environmental and burn-in processing Use suffix e DMQB FMQB and LMQB
Logic Symbols
’F646’F646B
TLF9580 – 1
’F648
TLF9580 – 7
TRI-STATE
is a registered trademark of National Semiconductor Corporation
C1995 National Semiconductor Corporation
RRD-B30M75Printed in U S A




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