ꢀ
ꢁ
ꢂ
ꢃ
ꢄ
ꢅ
ꢀ
ꢆ
ꢇ
ꢆ
ꢈ
ꢉ
ꢀ
ꢁ
ꢊ
ꢋ ꢌꢍꢎ ꢏꢉ ꢐꢁꢎ ꢑꢒꢓ ꢀꢄꢅꢉꢀ ꢔꢎꢕ ꢏ ꢖꢀ ꢏꢗ ꢓꢄꢘ ꢒꢉ ꢓꢒꢘ ꢎ ꢀꢏ ꢒꢓ
ꢃ
ꢄ
ꢅ
ꢀ
ꢆ
ꢇ
ꢆ
ꢀ
ꢀ
ꢙ
ꢎ
ꢏ
ꢔ
ꢉ
ꢀ
ꢚ
ꢁ
ꢛ
ꢔ
ꢓ
ꢗ
ꢁ
ꢗ
ꢐ
ꢀ
ꢉ
ꢛ
ꢅ
ꢒ
ꢄ
ꢓ
ꢉ
ꢄ
ꢁ
ꢜ
ꢉ
ꢆ
ꢌ
ꢀ
ꢏ
ꢄ
ꢏ
ꢒ
ꢉ
ꢗ
ꢐ
ꢏ
ꢝ
ꢐ
ꢏ
SDAS267A − DECEMBER 1982 − REVISED DECEMBER 1994
SN54ALS323 . . . J PACKAGE
SN74ALS323 . . . DW OR N PACKAGE
(TOP VIEW)
• Multiplexed I/O Ports Provide Improved Bit
Density
• Four Modes of Operation:
− Hold (Store)
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
S0
OE1
OE2
V
CC
− Shift Right
− Shift Left
− Load Data
S1
SL
Q
G/Q
G
H′
• Operate With Outputs Enabled or at High
E/Q
H/Q
E
H
Impedance
C/Q
F/Q
C
F
• 3-State Outputs Drive Bus Lines Directly
• Can Be Cascaded for n-Bit Word Lengths
• Synchronous Clear
A/Q
Q
D/Q
B/Q
A
D
A′
B
CLR
GND
CLK
SR
• Applications:
− Stacked or Push-Down Registers
− Buffer Storage
SN54ALS323 . . . FK PACKAGE
(TOP VIEW)
− Accumulator Registers
• Package Options Include Plastic
Small-Outline (DW) Packages, Ceramic
Chip Carriers (FK), and Standard Plastic (N)
and Ceramic (J) 300-mil DIPs
3
2
1
20 19
18
4
5
6
7
8
G/Q
SL
Q
G
17
16
15
14
E/Q
E
H′
description
C/Q
H/Q
C
H
F
A/Q
Q
F/Q
A
These 8-bit universal shift/storage registers
feature multiplexed input/output (I/O) ports to
achieve full 8-bit data handling in a 20-pin
package. Two function-select (S0, S1) inputs and
two output-enable (OE1, OE2) inputs can be used
to choose the modes of operation listed in the
function table.
D/Q
A′
D
9 10 11 12 13
Synchronous parallel loading is accomplished by taking both S0 and S1 high. This places the 3-state outputs
in the high-impedance state and permits data applied on the I/O ports to be clocked into the register. Reading
out of the register can be accomplished while the outputs are enabled in any mode. Clearing occurs
synchronously when the clear (CLR) input is low. Taking either OE1 or OE2 high disables the outputs but has
no effect on clearing, shifting, or storing data.
The SN54ALS323 is characterized for operation over the full military temperature range of −55°C to 125°C. The
SN74ALS323 is characterized for operation from 0°C to 70°C.
ꢝ
ꢝ
ꢓ
ꢗ
ꢭ
ꢜ
ꢨ
ꢐ
ꢛ
ꢦ
ꢏ
ꢧ
ꢎ
ꢡ
ꢗ
ꢟ
ꢁ
ꢠ
ꢜ
ꢄ
ꢏ
ꢄ
ꢞ
ꢟ
ꢩ
ꢠ
ꢡ
ꢧ
ꢢ
ꢣ
ꢤ
ꢤ
ꢥ
ꢥ
ꢞ
ꢞ
ꢡ
ꢡ
ꢟ
ꢟ
ꢞ
ꢦ
ꢦ
ꢪ
ꢧ
ꢨ
ꢢ
ꢢ
ꢩ
ꢩ
ꢟ
ꢥ
ꢤ
ꢣ
ꢦ
ꢦ
ꢡ
ꢠ
ꢪ
ꢏꢩ
ꢨ
ꢫ
ꢦ
ꢬ
ꢞ
ꢧ
ꢤ
ꢦ
ꢥ
ꢞ
ꢥ
ꢡ
ꢢ
ꢟ
ꢨ
ꢭ
ꢤ
ꢟ
ꢥ
ꢥ
ꢩ
ꢦ
ꢮ
Copyright 1994, Texas Instruments Incorporated
ꢢ
ꢡ
ꢧ
ꢥ
ꢡ
ꢢ
ꢣ
ꢥ
ꢡ
ꢦ
ꢪ
ꢞ
ꢠ
ꢞ
ꢧ
ꢩ
ꢢ
ꢥ
ꢯ
ꢥ
ꢩ
ꢢ
ꢡ
ꢠ
ꢰ
ꢤ
ꢎ
ꢟ
ꢣ
ꢩ
ꢦ
ꢥ
ꢤ
ꢟ
ꢭ
ꢤ
ꢢ
ꢭ
ꢱ
ꢤ
ꢥ ꢩ ꢦ ꢥꢞ ꢟꢳ ꢡꢠ ꢤ ꢬꢬ ꢪꢤ ꢢ ꢤ ꢣ ꢩ ꢥ ꢩ ꢢ ꢦ ꢮ
ꢢ
ꢢ
ꢤ
ꢟ
ꢥ
ꢲ
ꢮ
ꢝ
ꢢ
ꢡ
ꢭ
ꢨ
ꢧ
ꢥ
ꢞ
ꢡ
ꢟ
ꢪ
ꢢ
ꢡ
ꢧ
ꢩ
ꢦ
ꢦ
ꢞ
ꢟ
ꢳ
ꢭ
ꢡ
ꢩ
ꢦ
ꢟ
ꢡ
ꢥ
ꢟ
ꢩ
ꢧ
ꢩ
ꢦ
ꢦ
ꢤ
ꢢ
ꢞ
ꢬ
ꢲ
ꢞ
ꢟ
ꢧ
ꢬ
ꢨ
ꢭ
ꢩ
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443