参数资料
型号: SN74AHC240PWR
厂商: TEXAS INSTRUMENTS INC
元件分类: 总线收发器
英文描述: AHC/VHC/H/U/V SERIES, DUAL 4-BIT DRIVER, INVERTED OUTPUT, PDSO20
封装: GREEN, PLASTIC, TSSOP-20
文件页数: 16/22页
文件大小: 799K
代理商: SN74AHC240PWR
SN54AHC240, SN74AHC240
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCLS251H – OCTOBER 1995 – REVISED JULY 2003
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions (see Note 3)
SN54AHC240
SN74AHC240
UNIT
MIN
MAX
MIN
MAX
UNIT
VCC
Supply voltage
2
5.5
2
5.5
V
VCC = 2 V
1.5
VIH
High-level input voltage
VCC = 3 V
2.1
V
VCC = 5.5 V
3.85
VCC = 2 V
0.5
VIL
Low-level input voltage
VCC = 3 V
0.9
V
VCC = 5.5 V
1.65
VI
Input voltage
0
5.5
0
5.5
V
VO
Output voltage
0
VCC
0
VCC
V
VCC = 2 V
–50
mA
IOH
High-level output current
VCC = 3.3 V ± 0.3 V
–4
mA
VCC = 5 V ± 0.5 V
–8
mA
VCC = 2 V
50
mA
IOL
Low-level output current
VCC = 3.3 V ± 0.3 V
4
mA
VCC = 5 V ± 0.5 V
8
mA
t/v
Input transition rise or fall rate
VCC = 3.3 V ± 0.3 V
100
ns/V
t/v
Input transition rise or fall rate
VCC = 5 V ± 0.5 V
20
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
VCC
TA = 25°C
SN54AHC240
SN74AHC240
UNIT
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
2 V
1.9
2
1.9
IOH = –50 mA
3 V
2.9
3
2.9
VOH
4.5 V
4.4
4.5
4.4
V
OH
IOH = –4 mA
3 V
2.58
2.48
IOH = –8 mA
4.5 V
3.94
3.8
2 V
0.1
IOL = 50 mA
3 V
0.1
VOL
4.5 V
0.1
V
OL
IOL = 4 mA
3 V
0.36
0.5
0.44
IOL = 8 mA
4.5 V
0.36
0.5
0.44
II
VI = 5.5 V or GND
0 V to 5.5 V
±0.1
±1*
±1
mA
IOZ
VO = VCC or GND,
VI (OE) = VIL or VIH
5.5 V
±0.25
±2.5
mA
ICC
VI = VCC or GND,
IO = 0
5.5 V
4
40
mA
Ci
VI = VCC or GND
5 V
2.5
10
pF
Co
VO = VCC or GND
5 V
3.5
pF
* On products compliant to MIL-PRF-38535, this parameter is not production tested at VCC = 0 V.
The parameter IOZ includes the input leakage current.
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