参数资料
型号: SN74ABT540NSR
厂商: TEXAS INSTRUMENTS INC
元件分类: 总线收发器
英文描述: ABT SERIES, 8-BIT DRIVER, INVERTED OUTPUT, PDSO20
封装: GREEN, PLASTIC, SOP-20
文件页数: 2/9页
文件大小: 292K
代理商: SN74ABT540NSR
SN54ABT540, SN74ABT540
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCBS188C – FEBRUARY 1991 – REVISED JANUARY 1997
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
logic symbol
2
A1
3
A2
4
A3
1
Y1
18
Y2
17
Y3
16
&
EN
5
A4
6
A5
7
A6
Y4
15
Y5
14
Y6
13
19
OE1
OE2
8
A7
9
A8
Y7
12
Y8
11
This symbol is in accordance with ANSI/IEEE Std 91-1984 and
IEC Publication 617-12.
1
logic diagram (positive logic)
OE1
OE2
To Seven Other Channels
A1
Y1
1
19
218
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, VCC
–0.5 V to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, VI (see Note 1)
–0.5 V to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage range applied to any output in the high or power-off state, VO
–0.5 V to 5.5 V
. . . . . . . . . . . . . . . . . . .
Current into any output in the low state, IO: SN54ABT540
96 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74ABT540
128 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input clamp current, IIK (VI < 0)
–18 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output clamp current, IOK (VO < 0)
–50 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance,
θJA (see Note 2): DB package
115
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DW package
97
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
N package
67
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PW package
128
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, Tstg
–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 negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed.
2. The package thermal impedance is calculated in accordance with EIA/JEDEC Std JESD51, except for through-hole packages,
which use a trace length of zero.
recommended operating conditions (see Note 3)
SN54ABT540
SN74ABT540
UNIT
MIN
MAX
MIN
MAX
UNIT
VCC
Supply voltage
4.5
5.5
4.5
5.5
V
VIH
High-level input voltage
2
V
VIL
Low-level input voltage
0.8
V
VI
Input voltage
0
VCC
0
VCC
V
IOH
High-level output current
–24
–32
mA
IOL
Low-level output current
48
64
mA
t/v
Input transition rise or fall rate
Outputs enabled
5
ns/V
TA
Operating free-air temperature
–55
125
–40
85
°C
NOTE 3: Unused inputs must be held high or low to prevent them from floating.
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.
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