Texas Instruments SN74ALS244CN Bruksanvisning
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SN74ALS244CN
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SN54ALS244C, SN54AS244A, SN74ALS244C, SN74AS244A
OCTAL BUFFERS AND LINE DRIVERS
WITH 3-STATE OUTPUTS
SDAS142C – JULY 1987 – REVISED AUGUST 1995
Copyright 1995, Texas Instruments Incorporated
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
•3-State Outputs Drive Bus Lines or Buer
Memory Address Registers
•pnp Inputs Reduce dc Loading
•Package Options Include Plastic
Small-Outline (DW) Packages, Ceramic
Chip Carriers (FK), and Standard Plastic (N)
and Ceramic (J) 300-mil DIPs
description
These octal buers and line drivers are designed
specically to improve the performance and
density of 3-state memory address drivers, clock
drivers, and bus-oriented receivers and
transmitters. With the ALS240A, ALS241C,′ ′
′AS240A, and ′AS241A, these devices provide the
choice of selected combinations of inverting
outputs, symmetrical active-low output-enable
(OE) inputs, and complementary OE and OE
inputs.
The -1 version of SN74ALS244C is identical to the
standard version, except that the recommended
maximum IOL for the -1 version is 48 mA. There is
no -1 version of the SN54ALS244C.
The SN54ALS244C and SN54AS244A are
characterized for operation over the full military
temperature range of –55 C to 125° °C. The
SN74ALS244C and SN74AS244A are
characterized for operation from 0°C to 70 C.°
FUNCTION TABLE
(each buer)
INPUTS OUTPUT
OE A Y
L H H
L L L
H X Z
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
1OE
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
GND
VCC
2OE
1Y1
2A4
1Y2
2A3
1Y3
2A2
1Y4
2A1
SN54ALS244C, SN54AS244A . . . J PACKAGE
SN74ALS244C, SN74AS244A . . . DW OR N PACKAGE
(TOP VIEW)
3 2 1 20 19
9 10 11 12 13
4
5
6
7
8
18
17
16
15
14
1Y1
2A4
1Y2
2A3
1Y3
1A2
2Y3
1A3
2Y2
1A4
SN54ALS244C, SN54AS244A . . . FK PACKAGE
(TOP VIEW)
2Y4
1A1
1OE
1Y4
2A2 2OE
2Y1
GND
2A1 V
CC
PRODUCTION DATA information is current as of publication date.
Products conform to specications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Produktspecifikationer
| Varumärke: | Texas Instruments |
| Kategori: | Inte kategoriserad |
| Modell: | SN74ALS244CN |
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