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参数资料
| 型号： | SNJ54BCT640W |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 总线收发器 |
| 英文描述： | BCT/FBT SERIES, 8-BIT TRANSCEIVER, INVERTED OUTPUT, CDFP20 |
| 封装： | CERAMIC, FP-20 |
| 文件页数： | 9/15页 |
| 文件大小： | 637K |
| 代理商： | SNJ54BCT640W |
SN54BCT640, SN74BCT640
OCTAL BUS TRANSCEIVERS
WITH 3STATE OUTPUTS
SCBS025C SEPTEMBER 1988 REVISED APRIL 1994
23
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
recommended operating conditions
SN54BCT640
SN74BCT640
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
SN54BCT640
SN74BCT640
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 = 4.5 V
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
VOH
B port
VCC = 4.5 V
IOH = 12 mA
2
3.2
V
B port
VCC = 4.5 V
IOH = 15 mA
2
3.1
A port
VCC = 4.5 V
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 = 4.5 V
IOL = 48 mA
0.38
0.55
V
B port
VCC = 4.5 V
IOL = 64 mA
0.42
0.55
II
A or B port
VCC = 5.5 V,
VI = 5.5 V
1
mA
II
Control inputs
VCC = 5.5 V,
VI = 5.5 V
0.1
mA
IIH
A or B port
VCC = 5.5 V,
VI = 2.7 V
70
A
IIH
Control inputs
VCC = 5.5 V,
VI = 2.7 V
20
A
IIL
A or B port
VCC = 5.5 V,
VI = 0.5 V
0.6
mA
IIL
Control inputs
VCC = 5.5 V,
VI = 0.5 V
0.65
mA
IOS§
A port
VCC = 5.5 V,
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
53
84
53
94
mA
ICCH
A to B
VCC = 5.5 V
23
37
23
41
mA
ICCZ
VCC = 5.5 V
4
10
4
11
mA
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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