SN64BCT2240DW [TI]
Octal Buffer And Line/MOS Driver wWth 3-State Outputs 20-SOIC -40 to 85;
| 型号： | SN64BCT2240DW |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | Octal Buffer And Line/MOS Driver wWth 3-State Outputs 20-SOIC -40 to 85 驱动器 输出元件 |
| 文件： | 总5页 (文件大小：88K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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SCBS091A − JUNE 1990 − REVISED NOVEMBER 1993
DW OR N PACKAGE
(TOP VIEW)
• State-of-the-Art BiCMOS Design
Significantly Reduces I
CCZ
• ESD Protection Exceeds 2000 V Per
MIL-STD-883C, Method 3015; Exceeds 200 V
Using Machine Model (C = 200 pF, R = 0)
1OE
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
V
CC
1
2
3
4
5
6
7
8
9
20
19
18
17
16
15
14
13
12
2OE
1Y1
2A4
1Y2
2A3
1Y3
2A2
1Y4
• Output Ports Have Equivalent 33-Ω Series
Resistors, So No External Resistors Are
Required
• High-Impedance State During Power Up and
Power Down
• 3-State Buffer-Type Outputs Drive Bus
GND 10
11 2A1
Lines Directly
• Package Options Include Plastic
Small-Outline (DW) Packages and Standard
Plastic 300-mil DIPs (N)
description
The SN64BCT2240 is an inverting octal buffer and line/MOS driver designed specifically to improve both the
performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and
transmitters. Taken together with the SN64BCT2241 and SN64BCT2244, these devices provide the choice of
selected combinations of inverting outputs, symmetrical OE (active-low output-enable) inputs, and
complementary OE and OE inputs. These devices feature high fan-out and improved fan-in.
When the output-enable (1OE and 2OE) inputs are low, the Y outputs reflect the inverse of the data present at
the A inputs. When 1OE and 2OE are high, the outputs are in the high-impedance state. Output-enable 1OE
affects only the 1Y outputs; output-enable 2OE affects only the 2Y outputs.
The outputs, which are designed to source or sink up to 12 mA, include 33-Ω series resistors to reduce overshoot
and undershoot.
The SN64BCT2240 is characterized for operation from −40°C to 85°C and 0°C to 70°C.
FUNCTION TABLE
(each buffer)
INPUTS
OUTPUT
Y
OE
A
H
L
L
L
L
H
Z
H
X
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Copyright 1993, Texas Instruments Incorporated
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1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443
ꢀꢁ ꢂ ꢃꢄ ꢅ ꢆ ꢇꢇꢃ ꢈ
ꢉꢅ ꢆꢊ ꢋꢌ ꢄ ꢍꢎ ꢎꢏ ꢐꢌꢊꢁ ꢑꢌ ꢋꢒ ꢁ ꢏꢓ ꢔ ꢉꢀ ꢌ ꢑꢐ ꢒꢕ ꢏꢐ
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SCBS091A − JUNE 1990 − REVISED NOVEMBER 1993
†
logic symbol
logic diagram (positive logic)
1
1
1OE
1OE
EN
2
18
16
14
12
2
4
6
8
18
16
14
12
1
1A1
1Y1
1Y2
1A1
1A2
1A3
1A4
1Y1
1Y2
1Y3
1Y4
4
1A2
6
1A3
1Y3
1Y4
19
2OE
EN
8
1A4
11
13
15
17
9
7
5
3
1
2A1
2A2
2A3
2A4
2Y1
2Y2
2Y3
2Y4
19
2OE
11
9
7
5
2A1
2Y1
2Y2
†
This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
13
2A2
schematic of Y outputs
15
V
CC
2A3
2Y3
2Y4
17
3
2A4
Output
GND
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443
ꢀꢁꢂ ꢃꢄ ꢅꢆ ꢇꢇ ꢃꢈ
ꢉ ꢅꢆꢊꢋꢌꢄ ꢍꢎ ꢎꢏ ꢐꢌꢊꢁꢑ ꢌꢋ ꢒꢁꢏ ꢓꢔ ꢉ ꢀꢌ ꢑ ꢐꢒ ꢕ ꢏ ꢐ
ꢖ ꢒꢆ ꢗꢌ ꢘ ꢙꢀꢆꢊꢆ ꢏꢌꢉ ꢍ ꢆꢚ ꢍꢆ ꢀ
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SCBS091A − JUNE 1990 − REVISED NOVEMBER 1993
†
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V
CC
Input voltage range, V (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V
I
Voltage range applied to any output in the disabled or power-off state, V . . . . . . . . . . . . . . . . −0.5 V to 5.5 V
O
Voltage range applied to any output in the high state, V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to V
O
CC
Input clamp current, I (V < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −30 mA
IK
I
Current into any output in the low state, I
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 mA
O
Operating free-air temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40°C to 85°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −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.
NOTE 1: The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed.
recommended operating conditions (see Note 2)
MIN NOM
MAX
UNIT
V
V
V
V
Supply voltage
4.5
2
5
5.5
CC
IH
IL
High-level input voltage
Low-level input voltage
Input clamp current
V
0.8
−18
−12
12
V
I
I
I
mA
mA
mA
µs/V
°C
IK
High-level output current
Low-level output current
Power-up ramp rate
OH
OL
∆t/∆V
CC
2
T
A
Operating free-air temperature
−40
85
NOTE 2: Unused or floating inputs must be held high or low.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
‡
PARAMETER
TEST CONDITIONS
I = −18 mA
MIN TYP
MAX
UNIT
V
IK
V
V
= 4.5 V,
= 4.5 V
−1.2
V
CC
I
I
I
I
I
= −1 mA
= −12 mA
= 1 mA
2.4
2
3.3
3.1
OH
OH
OL
OL
V
OH
V
V
CC
0.15
0.15
0.5
0.8
0.1
20
V
OL
V
CC
= 4.5 V
= 12 mA
I
I
I
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
= 5.5 V,
V = 7 V
I
mA
µA
I
= 5.5 V,
V = 2.7 V
I
IH
IL
= 5.5 V,
V = 0.5 V
I
−1
50
mA
= 0 to 2.3 V (power up)
= 1.8 V to 0 (power down)
= 5.5 V,
OE = 0.8 V
I
V
= 2.7 V or 0.5 V,
µA
OZ
O
50
I
I
I
I
I
I
V
O
V
O
V
O
= 2.7 V
= 0.5 V
= 0
50
µA
µA
OZH
= 5.5 V,
−50
−225
76
OZL
§
= 5.5 V,
−100
mA
mA
mA
mA
pF
OS
= 5.5 V,
Outputs open
Outputs open
Outputs open
46
19
6
CCL
CCH
CCZ
= 5.5 V,
32
= 5.5 V,
8
C
C
= 5 V,
V = V
CC
or GND
or GND
6
i
I
= 5 V,
V = V
O CC
11
pF
o
‡
§
All typical values are at V
CC
= 5 V, T = 25°C.
A
Not more than one output should be tested at a time, and the duration of the test should not exceed one second.
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443
ꢀꢁ ꢂ ꢃꢄ ꢅ ꢆ ꢇꢇꢃ ꢈ
ꢉꢅ ꢆꢊ ꢋꢌ ꢄ ꢍꢎ ꢎꢏ ꢐꢌꢊꢁ ꢑꢌ ꢋꢒ ꢁ ꢏꢓ ꢔ ꢉꢀ ꢌ ꢑꢐ ꢒꢕ ꢏꢐ
ꢖꢒ ꢆ ꢗ ꢌꢘ ꢙꢀ ꢆꢊꢆꢏ ꢌ ꢉ ꢍꢆ ꢚꢍꢆ ꢀ
ꢌ
SCBS091A − JUNE 1990 − REVISED NOVEMBER 1993
switching characteristics over recommended range of supply voltage, C = 50 pF (unless
L
otherwise noted) (see Note 3)
V
T
= 5 V,
= 25°C
T
= −40°C
to 85°C
T = 0°C
A
CC
A
A
FROM
(INPUT)
TO
(OUTPUT)
to 70°C
PARAMETER
UNIT
MIN
0.5
0.5
2.6
4.3
2
TYP
3.4
2.8
6.2
8.8
5.3
6.7
MAX
4.8
4
MIN MAX
MIN MAX
t
t
t
t
t
t
0.5
0.5
2.6
4.3
2
6.3
4.6
0.5
0.5
2.6
4.3
2
5.7
4.4
PLH
PHL
PZH
PZL
PHZ
PLZ
A
Y
Y
Y
ns
ns
ns
8.2
10.9
7.1
8.5
10.1
12.9
9.2
9.3
OE
OE
12.4
8.7
2.2
2.2
12.2
2.2
10.6
NOTE 3: Load circuits and voltage waveforms are shown in Section 1.
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443
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