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SN74AHCT245DGV Datenblatt(PDF) 3 Page - Texas Instruments

Teilenummer SN74AHCT245DGV
Bauteilbeschribung  OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
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Hersteller  TI [Texas Instruments]
Direct Link  http://www.ti.com
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SN54AHCT245, SN74AHCT245
OCTAL BUS TRANSCEIVERS
WITH 3STATE OUTPUTS
SCLS233N − OCTOBER 1995 − REVISED MARCH 2005
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions (see Note 4)
SN54AHCT245
SN74AHCT245
UNIT
MIN
MAX
MIN
MAX
UNIT
VCC
Supply voltage
4.5
5.5
4.5
5.5
V
VIH
High-level input voltage
2
2
V
VIL
Low-level input voltage
0.8
0.8
V
VI
Input voltage
0
5.5
0
5.5
V
VO
Output voltage
0
VCC
0
VCC
V
IOH
High-level output current
−8
−8
mA
IOL
Low-level output current
8
8
mA
∆t/∆v Input transition rise or fall rate
20
20
ns/V
TA
Operating free-air temperature
−55
125
−40
85
°C
NOTE 4: 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
SN54AHCT245
SN74AHCT245
UNIT
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
VOH
IOH = −50 mA
4.5 V
4.4
4.5
4.4
4.4
V
VOH
IOH = −8 mA
4.5 V
3.94
3.8
3.8
V
VOL
IOL = 50 mA
4.5 V
0.1
0.1
0.1
V
VOL
IOL = 8 mA
4.5 V
0.36
0.44
0.44
V
II
OE or DIR
VI = 5.5 V or GND
0 V to 5.5 V
±0.1
±1*
±1
mA
IOZ
A or B inputs†
VO = VCC or GND
5.5 V
±0.25
±2.5
±2.5
mA
ICC
VI = VCC or GND, IO = 0
5.5 V
4
40
40
mA
∆ICC‡
One input at 3.4 V,
Other inputs at
VCC or GND
5.5 V
1.35
1.5
1.5
mA
Ci
OE or DIR
VI = VCC or GND
5 V
2.5
10
10
pF
Cio
A or B inputs
VI = VCC or GND
5 V
4
pF
* On products compliant to MIL-PRF-38535, this parameter is not production tested at VCC = 0 V.
† For I/O ports, the parameter IOZ includes the input leakage current.
‡ This is the increase in supply current for each input at one of the specified TTL voltage levels, rather than 0 V or VCC.


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