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SN54HC195 Datasheet Preview

SN54HC195 Datasheet

4-BIT PARALLEL-ACCESS SHIFT REGISTERS

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FEATURES
1
Synchronous Parallel Load
Positive-Edge-Triggered Clocking
J and K Inputs to First Stage
Complementary Outputs From Last Stage
Package Options: Plastic and Ceramic DIPS
and Ceramic Chip Carriers
Dependable Texas lnstruments Quality and
Reliability
DESCRIPTION/ORDERING INFORMATION
These 4-bit registers feature parallel inputs, parallel
outputs, J-K serial inputs, shift/load control input, and
a direct overriding clear. The registers have two
modes of operation: parallel (broadside) load, and
shift (in the direction QA and QD).
Parallel loading is accomplished by applying the
4-bits of data and taking the shift/load control input
low. The data is loaded into the associated flip-flop
and appears at the outputs after the positive
transition of the clock input. During loading, serial
data flow is inhibited.
Shifting is accomplished synchronously when the
shift/load control input is high. Serial data for this
mode is entered at the J-K inputs. These inputs
permit the first stage to perform as a J-K, D, or T type
flip-flop as shown in the function table.
The SN54HC195 is characterized for operation over
the full military temperature range of –55°C to 125°C.
SN54HC195
4-BIT PARALLEL-ACCESS SHIFT REGISTERS
SCLS124A – DECEMBER 1992 – REVISED NOVEMBER 2007
SN54HC195 . . . J PACKAGE
(TOP VIEW)
CLR 1
J2
K3
A4
B5
C6
D7
GND 8
16 VCC
15 QA
14 QB
13 QC
12 QD
11 QD
10 CLK
9 SH/LD
SN54HC195 . . . FK PACKAGE
(TOP VIEW)
K
3 2 1 20 19
4
18
QB
A5
17 QC
NC 6
16 NC
B7
15 QD
C8
14 QD
9 10 11 12 13
NC − No internal connection
LOGIC SYMBOL
(1)
CLR
SH/LD (9)
(10)
CLK
(2)
J
(3)
K
(4)
A
(5)
B
(6)
C
(7)
D
SRG4
R
M1 (SHIFT)
M2 (LOAD)
C3/1
1,3J
1,3K
2,3D
2,3D
(15)
QA
(14)
QB
(13)
QC
(12)
QD
(11)
QD
This symbol is in accordance with ANSI/IEEE Std 91−1984
and IEC Publication 617−12.
Pin numbers shown are for J package.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 1992–2007, Texas Instruments Incorporated




etcTI

SN54HC195 Datasheet Preview

SN54HC195 Datasheet

4-BIT PARALLEL-ACCESS SHIFT REGISTERS

No Preview Available !

SN54HC195
4-BIT PARALLEL-ACCESS SHIFT REGISTERS
SCLS124A – DECEMBER 1992 – REVISED NOVEMBER 2007
(1)
CLR
CLK (10)
SH/LD (9)
LOGIC DIAGRAM (POSITIVE LOGIC)
J (2)
TG
TG
K (3)
TG
TG
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R
(15)
C1
QA
1D
A (4)
(5)
B
TG
R
(14)
C1
QB
1D
TG
C (6)
TG
R
C1 (153) QC
1D
TG
D (7)
Pin numbers shown are for J package.
TG
R
(12) QD
C1
1D
(11) QD
TG
2
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Copyright © 1992–2007, Texas Instruments Incorporated
Product Folder Link(s): SN54HC195


Part Number SN54HC195
Description 4-BIT PARALLEL-ACCESS SHIFT REGISTERS
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