ChipFind - документация

Электронный компонент: 54AC16244

Скачать:  PDF   ZIP
54AC16244, 74AC16244
16-BIT BUFFERS/LINE DRIVERS
WITH 3-STATE OUTPUTS
SCAS120A MARCH 1990 REVISED APRIL 1996
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D
Members of the Texas Instruments
Widebus
t
Family
D
3-State Outputs Drive Bus Lines or Buffer
Memory Address Registers
D
Flow-Through Architecture Optimizes PCB
Layout
D
Distributed V
CC
and GND Configuration
Minimizes High-Speed Switching Noise
D
EPIC
t
(Enhanced-Performance Implanted
CMOS) 1-
m
m 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.
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
OUTPUT
OE
A
Y
L
H
H
L
L
L
H
X
Z
Copyright
1996, 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.
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.
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
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
1OE
1Y1
1Y2
GND
1Y3
1Y4
V
CC
2Y1
2Y2
GND
2Y3
2Y4
3Y1
3Y2
GND
3Y3
3Y4
V
CC
4Y1
4Y2
GND
4Y3
4Y4
4OE
2OE
1A1
1A2
GND
1A3
1A4
V
CC
2A1
2A2
GND
2A3
2A4
3A1
3A2
GND
3A3
3A4
V
CC
4A1
4A2
GND
4A3
4A4
3OE
54AC16244 . . . WD PACKAGE
74AC16244 . . . DGG OR DL PACKAGE
(TOP VIEW)
54AC16244, 74AC16244
16-BIT BUFFERS/LINE DRIVERS
WITH 3-STATE OUTPUTS
SCAS120A MARCH 1990 REVISED APRIL 1996
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
logic symbol
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
4
3
1
1
2
1
1
1
3OE
2OE
1OE
4OE
EN1
1
EN2
48
EN3
25
EN4
24
47
1A1
46
1A2
44
1A3
43
1A4
41
2A1
40
2A2
38
2A3
37
2A4
36
3A1
35
3A2
33
3A3
32
3A4
30
4A1
29
4A2
27
4A3
26
4A4
1Y1
2
1Y2
3
1Y3
5
1Y4
6
2Y1
8
2Y2
9
2Y3
11
2Y4
12
3Y1
13
3Y2
14
3Y3
16
3Y4
17
4Y1
19
4Y2
20
4Y3
22
4Y4
23
54AC16244, 74AC16244
16-BIT BUFFERS/LINE DRIVERS
WITH 3-STATE OUTPUTS
SCAS120A MARCH 1990 REVISED APRIL 1996
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
logic diagram (positive logic)
1OE
1
1A1
1A2
1A3
1A4
47
46
44
43
1Y1
1Y2
1Y3
1Y4
2
3
5
6
2OE
48
2A1
2A2
2A3
2A4
41
40
38
37
2Y1
2Y2
2Y3
2Y4
8
9
11
12
3OE
25
3A1
3A2
3A3
3A4
36
35
33
32
3Y1
3Y2
3Y3
3Y4
13
14
16
17
4OE
24
4A1
4A2
4A3
4A4
30
29
27
26
4Y1
4Y2
4Y3
4Y4
19
20
22
23
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, V
CC
0.5 V to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, V
I
(see Note 1)
0.5 V to V
CC
+ 0.5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output voltage range, V
O
(see Note 1)
0.5 V to V
CC
+ 0.5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input clamp current, I
IK
(V
I
< 0 or V
I
> V
CC
)
20 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output clamp current, I
OK
(V
O
< 0 or V
O
> V
CC
)
50 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous output current, I
O
(V
O
= 0 to V
CC
)
50 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous current through V
CC
or GND
400 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum power dissipation at T
A
= 55
C (in still air) (see Note 2): DGG package
0.85 W
. . . . . . . . . . . . . . . .
DL package
1.2 W
. . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
65
C to 150
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES:
1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. The maximum package power dissipation is calculated using a junction temperature of 150
C and a board trace length of 750 mils.
54AC16244, 74AC16244
16-BIT BUFFERS/LINE DRIVERS
WITH 3-STATE OUTPUTS
SCAS120A MARCH 1990 REVISED APRIL 1996
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions (see Note 3)
54AC16244
74AC16244
UNIT
MIN
NOM
MAX
MIN
NOM
MAX
UNIT
VCC
Supply voltage (see Note 4)
3
5
5.5
3
5
5.5
V
VCC = 3 V
2.1
2.1
VIH
High-level input voltage
VCC = 4.5 V
3.15
3.15
V
VCC = 5.5 V
3.85
3.85
VCC = 3 V
0.9
0.9
VIL
Low-level input voltage
VCC = 4.5 V
1.35
1.35
V
VCC = 5.5 V
1.65
1.65
VI
Input voltage
0
VCC
0
VCC
V
VO
Output voltage
0
VCC
0
VCC
V
VCC = 3 V
4
4
IOH
High-level output current
VCC = 4.5 V
24
24
mA
VCC = 5.5 V
24
24
VCC = 3 V
12
12
IOL
Low-level output current
VCC = 4.5 V
24
24
mA
VCC = 5.5 V
24
24
t/
v
Input transition rise or fall rate
0
10
0
10
ns/V
TA
Operating free-air temperature
55
125
40
85
C
NOTES:
3. Unused inputs should be tied to VCC through a pullup resistor of approximately 5 k
W
or greater to prevent them from floating.
4. All VCC and GND pins must be connected to the proper voltage supply.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
TA = 25
C
54AC16244
74AC16244
UNIT
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
3 V
2.9
2.9
2.9
IOH = 50
A
4.5 V
4.4
4.4
4.4
5.5 V
5.4
5.4
5.4
VOH
IOH = 4 mA
3 V
2.58
2.48
2.48
V
IOH = 24 mA
4.5 V
3.94
3.8
3.8
IOH = 24 mA
5.5 V
4.94
4.8
4.8
IOH = 75 mA
5.5 V
3.85
3.85
3 V
0.1
0.1
0.1
IOL = 50
A
4.5 V
0.1
0.1
0.1
5.5 V
0.1
0.1
0.1
VOL
IOL = 12 mA
3 V
0.36
0.44
0.44
V
IOL = 24 mA
4.5 V
0.36
0.44
0.44
IOL = 24 mA
5.5 V
0.36
0.44
0.44
IOL = 75 mA
5.5 V
1.65
1.65
II
VI = VCC or GND
5.5 V
0.1
1
1
A
IOZ
VI = VCC or GND
5.5 V
0.5
5
5
A
ICC
VI = VCC or GND,
IO = 0
5.5 V
8
80
80
A
Ci
VI = VCC or GND
5 V
4.5
pF
Co
VI = VCC or GND
5 V
12
pF
Not more than one output should be tested at a time, and the duration of the test should not exceed 10 ms.
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.
54AC16244, 74AC16244
16-BIT BUFFERS/LINE DRIVERS
WITH 3-STATE OUTPUTS
SCAS120A MARCH 1990 REVISED APRIL 1996
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
switching characteristics over recommended operating free-air temperature range,
V
CC
= 3.3 V
0.3 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
TO
TA = 25
C
54AC16244
74AC16244
UNIT
PARAMETER
(INPUT)
(OUTPUT)
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
tPLH
A
Y
2
7.1
9.4
2
10.8
2
10.8
ns
tPHL
A
Y
2.4
8.3
10.7
2.4
11.8
2.4
11.8
ns
tPZH
OE
Y
2.2
7.5
10
2.2
11.5
2.2
11.5
ns
tPZL
OE
Y
2.9
10.4
13
2.9
14.6
2.9
14.6
ns
tPHZ
OE
Y
4.1
6.8
8.4
4.1
9.1
4.1
9.1
ns
tPLZ
OE
Y
3.7
6.5
8.1
3.7
8.8
3.7
8.8
ns
switching characteristics over recommended operating free-air temperature range,
V
CC
= 5 V
0.5 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
TO
TA = 25
C
54AC16244
74AC16244
UNIT
PARAMETER
(INPUT)
(OUTPUT)
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
tPLH
A
Y
1.6
4.6
6.3
1.6
7.1
1.6
7.1
ns
tPHL
A
Y
2
5.3
7
2
7.9
2
7.9
ns
tPZH
OE
Y
1.7
4.8
6.7
1.7
7.5
1.7
7.5
ns
tPZL
OE
Y
2.2
6.1
8.1
2.2
9
2.2
9
ns
tPHZ
OE
Y
4
6.4
7.8
4
8.4
4
8.4
ns
tPLZ
OE
Y
3.5
5.5
7.2
3.5
7.6
3.5
7.6
ns
operating characteristics, V
CC
= 5 V, T
A
= 25
C
PARAMETER
TEST CONDITIONS
TYP
UNIT
C d
Power dissipation capacitance per latch
Outputs enabled
CL = 50 pF
f = 1 MHz
43
pF
Cpd
Power dissipation capacitance per latch
Outputs disabled
CL = 50 pF,
f = 1 MHz
7
pF
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.