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参数资料
| 型号： | SN54BCT245WR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 总线收发器 |
| 英文描述： | BCT/FBT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, CDFP20 |
| 封装： | CERAMIC, FP-20 |
| 文件页数： | 3/7页 |
| 文件大小： | 102K |
| 代理商： | SN54BCT245WR |
SN54BCT245, SN74BCT245
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS013F – SEPTEMBER 1988 – REVISED APRIL 1994
2–3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions
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
V
VIL
Low-level input voltage
0.8
V
IIK
Input clamp current
–18
mA
IOH
High level output current
A port
–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
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
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
mA
II
Control input
VCC = 5.5 V,
VI = 5.5 V
0.1
mA
I
A or B port
VCC =5 5V
VI =2 7V
70
A
IIH
Control input
VCC = 5.5 V,
VI = 2.7 V
20
A
I
A or B port
VCC =5 5V
VI =0 5V
– 0.65
mA
IIL
Control input
VCC = 5.5 V,
VI = 0.5 V
–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
pF
Ci
A to B
VCC =5V
VO =2 5Vor0 5V
9
pF
Cio
B to A
VCC = 5 V,
VO = 2.5 V or 0.5 V
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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