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PDF 74AC16244SSC Data sheet ( Hoja de datos )
| Número de pieza | 74AC16244SSC | |
| Descripción | 16-Bit Buffer/Line Driver with 3-STATE Outputs | |
| Fabricantes | Fairchild Semiconductor | |
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54AC16244, 74AC16244
16-BIT BUFFERS/LINE DRIVERS
WITH 3-STATE OUTPUTS
SCAS120A – MARCH 1990 – REVISED APRIL 1996
D Members of the Texas Instruments
Widebust Family
D 3-State Outputs Drive Bus Lines or Buffer
Memory Address Registers
D Flow-Through Architecture Optimizes PCB
Layout
D Distributed VCC and GND Configuration
Minimizes High-Speed Switching Noise
D EPIC t (Enhanced-Performance Implanted
CMOS) 1-mm Process
D 500-mA Typical Latch-Up Immunity at
125°C
D Package Options Include Plastic 300-mil
Shrink Small-Outline (DL) and Thin Shrink
Small-Outline (DGG) Packages Using 25-mil
Center-to-Center Pin Spacings, and 380-mil
Fine-Pitch Ceramic Flat (WD) Packages
Using 25-mil Center-to-Center Pin Spacings
description
The ’AC16244 are 16-bit buffers/line drivers
designed specifically to improve both the
performance and density of 3-state memory
address drivers, clock drivers, and bus-oriented
receivers and transmitters. They can be used as
four 4-bit buffers, two 8-bit buffers, or one 16-bit
buffer. These devices provide true outputs and
symmetrical active-low output-enable (OE)
inputs. When OE is low, the device passes
noninverted data from the A inputs to the Y
outputs. When OE is high, the outputs are in the
high-impedance state.
54AC16244 . . . WD PACKAGE
74AC16244 . . . DGG OR DL PACKAGE
(TOP VIEW)
1OE
1Y1
1Y2
GND
1Y3
1Y4
VCC
2Y1
2Y2
GND
2Y3
2Y4
3Y1
3Y2
GND
3Y3
3Y4
VCC
4Y1
4Y2
GND
4Y3
4Y4
4OE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48 2OE
47 1A1
46 1A2
45 GND
44 1A3
43 1A4
42 VCC
41 2A1
40 2A2
39 GND
38 2A3
37 2A4
36 3A1
35 3A2
34 GND
33 3A3
32 3A4
31 VCC
30 4A1
29 4A2
28 GND
27 4A3
26 4A4
25 3OE
The 74AC16244 is packaged in the TI’s shrink small-outline package, which provides twice the I/O pin count
and functionality of standard small-outline packages in the same printed-circuit-board area.
The 54AC16244 is characterized for operation over the full military temperature range of –55°C to 125°C. The
74AC16244 is characterized for operation from –40°C to 85°C.
FUNCTION TABLE
(each driver)
INPUTS
OE A
OUTPUT
Y
LH
H
LL
L
HX
Z
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.
EPIC and Widebus are trademarks of Texas Instruments Incorporated.
UNLESS OTHERWISE NOTED this document contains PRODUCTION
DATA information 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.
•POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright © 1996, Texas Instruments Incorporated
1
1 page  
54AC16244, 74AC16244
16-BIT BUFFERS/LINE DRIVERS
WITH 3-STATE OUTPUTS
SCAS120A – MARCH 1990 – REVISED APRIL 1996
switching characteristics over recommended operating free-air temperature range,
VCC = 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
TA = 25°C
54AC16244 74AC16244
MIN TYP MAX MIN MAX MIN MAX
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
A
OE
OE
2 7.1 9.4
2 10.8
2 10.8
Y
2.4 8.3 10.7 2.4 11.8 2.4 11.8
2.2 7.5
10 2.2 11.5 2.2 11.5
Y
2.9 10.4
13 2.9 14.6 2.9 14.6
4.1 6.8 8.4 4.1 9.1 4.1 9.1
Y
3.7 6.5 8.1 3.7 8.8 3.7 8.8
UNIT
ns
ns
ns
switching characteristics over recommended operating free-air temperature range,
VCC = 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
TA = 25°C
54AC16244 74AC16244
MIN TYP MAX MIN MAX MIN MAX
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
A
OE
OE
1.6 4.6 6.3 1.6 7.1 1.6 7.1
Y
2 5.3 7 2 7.9 2 7.9
1.7 4.8 6.7 1.7 7.5 1.7 7.5
Y
2.2 6.1 8.1 2.2
9 2.2
9
4 6.4 7.8
4 8.4
4 8.4
Y
3.5 5.5 7.2 3.5 7.6 3.5 7.6
UNIT
ns
ns
ns
operating characteristics, VCC = 5 V, TA = 25°C
PARAMETER
Cpd Power dissipation capacitance per latch
Outputs enabled
Outputs disabled
TEST CONDITIONS
CL = 50 pF, f = 1 MHz
TYP UNIT
43
pF
7
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
•POST OFFICE BOX 655303 DALLAS, TEXAS 75265
5
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| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet 74AC16244SSC.PDF ] | |
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