SN64BCT2241DW [TI]
Octal Buffer And Line/MOS Driver With 3-State Outputs 20-SOIC -40 to 85;
| 型号： | SN64BCT2241DW |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | Octal Buffer And Line/MOS Driver With 3-State Outputs 20-SOIC -40 to 85 驱动 信息通信管理 光电二极管 输出元件 逻辑集成电路 |
| 文件： | 总5页 (文件大小：71K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SN64BCT2241
OCTAL BUFFER AND LINE/MOS DRIVER
WITH 3-STATE OUTPUTS
SCBS092A – 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 SN64BCT2241 is a noninverting 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 SN64BCT2240 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.
The SN64BCT2241 features complementary output-enable (1OE and 2OE) inputs. The 1Y outputs are active
(high or low) when the active-low enable 1OE is low. When 1OE is high, the 1Y outputs are in the
high-impedance state. The 2Y outputs are active when 2OE is high and in the high-impedance state when 2OE
is low.
Theoutputs, whicharedesignedtosourceorsinkupto12mA, include33-Ω seriesresistorstoreduceovershoot
and undershoot.
The SN64BCT2241 is characterized for operation from – 40°C to 85°C and 0°C to 70°C.
FUNCTION TABLES
INPUTS
OUTPUT
1Y
1OE
1A
H
L
L
H
L
L
H
X
Z
INPUTS
OUTPUT
2Y
2OE
H
2A
H
H
L
H
L
L
X
Z
Copyright 1993, Texas Instruments Incorporated
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.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN64BCT2241
OCTAL BUFFER AND LINE/MOS DRIVER
WITH 3-STATE OUTPUTS
SCBS092A – JUNE 1990 – REVISED NOVEMBER 1993
†
logic symbol
logic diagram (positive logic)
1
1
1OE
1OE
EN
18
2
2
4
6
8
18
16
14
12
1
1A1
1Y1
1Y2
1A1
1A2
1A3
1A4
1Y1
1Y2
1Y3
1Y4
16
14
4
1A2
6
1A3
1Y3
1Y4
19
2OE
EN
8
12
1A4
11
13
15
17
9
7
5
3
1
2A1
2A2
2A3
2A4
2Y1
2Y2
2Y3
2Y4
19
2OE
9
7
11
†
2A1
2Y1
2Y2
This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
13
2A2
5
3
15
2A3
2Y3
2Y4
17
2A4
schematic of Y outputs
V
CC
Output
GND
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN64BCT2241
OCTAL BUFFER AND LINE/MOS DRIVER
WITH 3-STATE OUTPUTS
SCBS092A – 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
= 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
mA
= 0 to 2.3 V (power up)
= 1.8 V to 0 (power down)
= 5.5 V,
±50
±50
50
I
V
= 2.7 V or 0.5 V,
µA
OE or OE = 0.8 V
OZ
O
I
I
I
I
I
I
V
O
V
O
V
O
= 2.7 V
= 0.5 V
= 0
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
48
23
6
CCL
CCH
CCZ
= 5.5 V,
37
= 5.5 V,
9
C
C
= 5 V,
V = V
or GND
6
i
I
CC
= V
V
CC
= 5 V,
V
O
or GND
11
pF
o
CC
‡
§
All typical values are at V
= 5 V, T = 25°C.
A
CC
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
SN64BCT2241
OCTAL BUFFER AND LINE/MOS DRIVER
WITH 3-STATE OUTPUTS
SCBS092A – 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
1.1
2.9
2.7
4.1
2.5
3.2
TYP
3
MAX
4.4
6.6
7.8
9.4
7.2
9.5
MIN MAX
MIN MAX
t
t
t
t
t
t
1.1
2.9
2.4
4
5.1
7.2
1.1
2.9
2.7
4.1
2.5
3.2
4.9
6.9
PLH
PHL
PZH
PZL
PHZ
PLZ
A
Y
Y
Y
ns
ns
ns
4.9
6
9.4
8.9
OE or OE
OE or OE
7.7
5.2
7.1
10.9
9.7
10.3
8.7
2
3
12.9
11.3
NOTE 3: Load circuits and voltage waveforms are shown in Section 1.
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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Copyright 1998, Texas Instruments Incorporated
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