SN54ALS22B, SN74ALS22B
DUAL 4 INPUT POSITIVE NAND GATES
WITH OPEN COLLECTOR OUTPUTS
•
•
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SN54ALS22B . . . J PACKAGE
SN74ALS22B . . . D OR N PACKAGE
(TOP VIEW)
SDAS005A − MARCH 1984 − REVISED MAY 1986
description
These devices contain two independent 4-input
NAND gates. They perform the Boolean functions
Y = A•B•C•D or Y = A+B+C+D in positive logic.
The open-collector outputs require pullup
resistors to perform correctly. They may be
connected to other open-collector outputs to
implement active-low wired-OR or active-high
wired-AND functions. Open-collector devices are
often used to generate higher V
OH
levels.
The SN54ALS22B is characterized for operation
over the full military temperature range of 55°C
to 125°C. The SN74ALS22B is characterized for
operation from 0°C to 70°C.
FUNCTION TABLE
(each gate)
A
H
L
X
X
X
INPUTS
B
C
H
X
L
X
X
H
X
X
L
X
OUTPUT
D
H
X
X
X
L
Y
L
H
H
H
H
1A
1B
NC
1C
1D
1Y
GND
1
2
3
4
5
6
7
14
13
12
11
10
9
8
V
CC
2D
2C
NC
2B
2A
2Y
SN54ALS22B . . . FK PACKAGE
(TOP VIEW)
NC
NC
1C
NC
1D
4
5
6
7
8
3 2 1 20 19
18
17
16
15
14
9 10 11 12 13
1B
1A
NC
VCC
2D
2C
NC
NC
NC
2B
NC −No internal connection
logic diagram (positive logic)
1A
1B
1C
1Y
logic symbol
†
1A
1B
1C
1D
2A
2B
2C
2D
1
2
4
5
9
10
12
13
8
2Y
&
6
1Y
1D
2A
2B
2C
2D
2Y
† This symbol is in accordance with ANSI/IEEE Std 91-1984 and
IEC Publication 617-12.
Pin numbers shown are for D, J, and N packages.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright
1986, Texas Instruments Incorporated
5BASIC
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
POST OFFICE BOX 1443 HOUSTON, TEXAS 77001
•
•
1Y
GND
NC
2Y
2A
1
SDAS005A − MARCH 1984 − REVISED MAY 1986
SN54ALS22B, SN74ALS22B
DUAL 4 INPUT POSITIVE NAND GATES
WITH OPEN COLLECTOR OUTPUTSWITH OPEN COLLECTOR OUTPUTS
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Off-state output voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Operating free-air temperature range: SN54ALS22B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55°C to 125°C
SN74ALS22B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C
recommended operating conditions
SN54ALS22B
MIN
VCC
VIH
VIL
IOH
IOL
TA
Supply voltage
High-level input voltage
Low-level input voltage
High-level output current
Low-level output current
Operating free-air temperature
−55
4.5
2
0.7
5.5
4
125
0
NOM
5
MAX
5.5
SN74ALS22B
MIN
4.5
2
0.8
5.5
8
70
NOM
5
MAX
5.5
UNIT
V
V
V
mA
mA
°C
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
VIK
VOL
IOH
II
IIH
IIL
ICCH
ICCL
VCC = 4.5 V,
VCC = 4.5 V,
VCC = 4.5 V,
VCC = 4.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
TEST CONDITIONS
II = − 18 mA
IOL = 4 mA
IOL = 8 mA
VOH = 5.5 V
VI = 7 V
VI = 2.7 V
VI = 0.4 V
VI = 0 V
VI = 4.5 V
0.22
0.8
SN54ALS22B
MIN
TYP† MAX
−1.5
0.25
0.4
0.1
0.1
20
−0.1
0.4
1.5
0.22
0.8
0.25
0.35
SN74ALS22B
MIN
TYP† MAX
−1.5
0.4
0.5
0.1
0.1
20
−0.1
0.4
1.5
UNIT
V
V
mA
mA
µA
mA
mA
mA
VCC = 5.5 V,
† All typical values are at VCC = 5 V, TA = 25°C.
switching characteristics (see Note 1)
VCC = 5 V,
CL = 50 pF,
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
RL = 2 kΩ,
TA = 25°C
’ALS22B
TYP
tPLH
tPHL
Any
Any
Y
Y
35
8
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
RL = 2 k
Ω
,
TA = MIN to MAX
SN54ALS22B SN74ALS22B
MIN
23
4
MAX
65
32
MIN
23
4
MAX
45
18
ns
ns
UNIT
NOTE 1: Load circuit and voltage waveforms are shown in Section 1.
2
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•
•
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