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SN74BCT245PWRE4 Datenblatt(PDF) 3 Page - Texas Instruments

Teilenummer SN74BCT245PWRE4
Bauteilbeschribung  OCTAL BUS TRANSCEIVERS OCTAL BUS TRANSCEIVERS
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Hersteller  TI [Texas Instruments]
Direct Link  http://www.ti.com
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SN54BCT245, SN74BCT245
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS013H – SEPTEMBER 1998 – REVISED MAY 2002
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions (see Note 3)
SN54BCT245
SN74BCT245
UNIT
MIN
NOM
MAX
MIN
NOM
MAX
UNIT
VCC
Supply voltage
4.5
5
5.5
4.5
5
5.5
V
VIH
High-level input voltage
2
2
V
VIL
Low-level input voltage
0.8
0.8
V
IIK
Input clamp current
–18
–18
mA
IOH
High level output current
A port
– 3
– 3
mA
IOH
High-level output current
B port
–12
–15
mA
IOL
Low level output current
A port
20
24
mA
IOL
Low-level output current
B port
48
64
mA
TA
Operating free-air temperature
– 55
125
0
70
°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
SN54BCT245
SN74BCT245
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP†
MAX
MIN
TYP†
MAX
UNIT
VIK
VCC = 4.5 V,
II = –18 mA
–1.2
–1.2
V
A port
VCC =4 5V
IOH = –1 mA
2.5
3.4
2.5
3.4
A port
VCC = 4.5 V
IOH = – 3 mA
2.4
3.3
2.4
3.3
VOH
IOH = – 3 mA
2.4
3.3
2.4
3.3
V
B port
VCC = 4.5 V
IOH = –12 mA
2
3.2
IOH = – 15 mA
2
3.1
A port
VCC =4 5V
IOL = 20 mA
0.3
0.5
VOL
A port
VCC = 4.5 V
IOL = 24 mA
0.35
0.5
V
VOL
B port
VCC =4 5V
IOL = 48 mA
0.38
0.55
V
B port
VCC = 4.5 V
IOL = 64 mA
0.42
0.55
I
A or B port
VCC =5 5V
VI =5 5V
1
1
mA
II
Control input
VCC = 5.5 V,
VI = 5.5 V
0.1
0.1
mA
I
A or B port
VCC =5 5V
VI =2 7V
70
70
µA
IIH‡
Control input
VCC = 5.5 V,
VI = 2.7 V
20
20
µA
I ‡
A or B port
VCC =5 5V
VI =0 5V
– 0.65
– 0.65
mA
IIL‡
Control input
VCC = 5.5 V,
VI = 0.5 V
–1.2
–1.2
mA
I
§
A port
VCC =5 5V
VO =0
– 60
–150
– 60
–150
mA
IOS§
B port
VCC = 5.5 V,
VO = 0
–100
– 225
–100
– 225
mA
ICCL
A to B
VCC = 5.5 V
57
90
57
90
mA
ICCH
A to B
VCC = 5.5 V
36
57
36
57
mA
ICCZ
VCC = 5.5 V
10
15
10
15
mA
Ci
Control input
VCC = 5 V,
VI = 2.5 V or 0.5 V
7
7
pF
Ci
A to B
VCC =5V
VO =2 5Vor0 5V
9
9
pF
Cio
B to A
VCC = 5 V,
VO = 2.5 V or 0.5 V
12
12
pF
† All typical values are at VCC = 5 V, TA = 25°C.
‡ For I/O ports, the parameters IIH and IIL include the off-state output current.
§ Not more than one output should be tested at a time, and the duration of the test should not exceed one second.


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