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参数资料
| 型号： | SNJ54ALS21AJ |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 门电路 |
| 英文描述： | ALS SERIES, DUAL 4-INPUT AND GATE, CDIP14 |
| 封装： | 0.300 INCH, CERAMIC, DIP-14 |
| 文件页数： | 1/16页 |
| 文件大小： | 682K |
| 代理商： | SNJ54ALS21AJ |
SN54ALS21A, SN54AS21, SN74ALS21A, SN74AS21
DUAL 4INPUT POSITIVEAND GATES
SDAS085B APRIL 1982 REVISED DECEMBER 1994
Copyright
1994, Texas Instruments Incorporated
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
Package Options Include Plastic
Small-Outline (D) Packages, Ceramic Chip
Carriers (FK), and Standard Plastic (N) and
Ceramic (J) 300-mil DIPs
description
These devices contain two independent 4-input
positive-AND gates. They perform the Boolean
functions Y = A
B C D or Y = A + B + C + D
in positive logic.
The
SN54ALS21A
and
SN54AS21
are
characterized for operation over the full military
temperature range of 55
°C to 125°C. The
SN74ALS21A and SN74AS21 are characterized
for operation from 0
°C to 70°C.
FUNCTION TABLE
(each gate)
INPUTS
OUTPUT
A
B
C
D
OUTPUT
Y
H
L
XX
X
L
X
LX
X
L
X
XL
X
L
X
L
logic symbol
logic diagram (positive logic)
&
1Y
6
2Y
8
1
1A
2
1B
4
1C
5
1D
9
2A
10
2B
12
2C
13
2D
1Y
1D
1A
1B
1C
2C
2B
2A
2D
2Y
1
2
4
5
9
10
12
13
6
8
This symbol is in accordance with ANSI/IEEE Std 91-1984 and
IEC Publication 617-12.
Pin numbers shown are for the D, J, and N packages.
SN54ALS21A, SN54AS21 ...J PACKAGE
SN74ALS21A, SN74AS21 ...D OR N PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
14
13
12
11
10
9
8
1A
1B
NC
1C
1D
1Y
GND
VCC
2D
2C
NC
2B
2A
2Y
SN54ALS21A, SN54AS21 . . . FK PACKAGE
(TOP VIEW)
3
2
1 20 19
9 10 11 12 13
4
5
6
7
8
18
17
16
15
14
2C
NC
2B
NC
1C
NC
1D
1B
1A
NC
2Y
2A
V
2D
1Y
NC
CC
NC No internal connection
GND
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.
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| SNJ54ALS573CFK | ALS SERIES, 8-BIT DRIVER, TRUE OUTPUT, CQCC20 |
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相关代理商/技术参数 |
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| SNJ54ALS234J | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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| SNJ54ALS240AJ | 制造商:Texas Instruments 功能描述:Buffer/Line Driver 8-CH Inverting 3-ST Bipolar 20-Pin CDIP Tube 制造商:Rochester Electronics LLC 功能描述:OCTAL BUFFER/DRIVER - Bulk 制造商:Texas Instruments 功能描述:BFFR/LINE DRVR 8CH INV 3-ST BIPOLAR 20CDIP - Rail/Tube |
| SNJ54ALS240AW | 制造商:TI 制造商全称:Texas Instruments 功能描述:OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS |
| SNJ54ALS241BJ | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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