參數(shù)資料
型號(hào)： SN74ACT240NSR
廠商： TEXAS INSTRUMENTS INC
元件分類： 總線收發(fā)器
英文描述： ACT SERIES, DUAL 4-BIT DRIVER, INVERTED OUTPUT, PDSO20
封裝： GREEN, PLASTIC, SOP-20
文件頁(yè)數(shù)： 12/18頁(yè)
文件大?。?/td> 743K
代理商： SN74ACT240NSR
SN54ACT240, SN74ACT240
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCAS515C JUNE 1995 REVISED OCTOBER 2002
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions (see Note 3)
SN54ACT240
SN74ACT240
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
VO
Output voltage
0
VCC
0
VCC
V
IOH
High-level output current
24
mA
IOL
Low-level output current
24
mA
Δt/Δv
Input transition rise or fall rate
8
ns/V
TA
Operating free-air temperature
55
125
40
85
°C
NOTE 3: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
V
TA = 25°C
SN54ACT240
SN74ACT240
UNIT
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
I
50 A
4.5 V
4.4
4.49
4.4
IOH = 50 μA
5.5 V
5.4
5.49
5.4
V
I
24 mA
4.5 V
3.86
3.7
3.76
V
VOH
IOH = 24 mA
5.5 V
4.86
4.7
4.76
V
IOH = 50 mA
5.5 V
3.85
IOH = 75 mA
5.5 V
3.85
I
50 A
4.5 V
0.001
0.1
IOL = 50 μA
5.5 V
0.001
0.1
V
I
24 mA
4.5 V
0.36
0.5
0.44
V
VOL
IOL = 24 mA
5.5 V
0.36
0.5
0.44
V
IOL = 50 mA
5.5 V
1.65
IOL = 75 mA
5.5 V
1.65
IOZ
VO = VCC or GND
5.5 V
±0.25
±5
±2.5
μA
II
VI = VCC or GND
5.5 V
±0.1
±1
μA
ICC
VI = VCC or GND,
IO = 0
5.5 V
4
80
40
μA
ΔICC
One input at 3.4 V,
Other inputs at GND or VCC
5.5 V
0.6
1.6
1.5
mA
Ci
VI = VCC or GND
5 V
2.5
pF
Co
VI = VCC or GND
5 V
8
pF
Not more than one output should be tested at a time, and the duration of the test should not exceed 2 ms.
This is the increase in supply current for each input that is at one of the specified TTL voltage levels, rather than 0 V or VCC.
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