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| 型號(hào)： | SN54ABT620A |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Octal Bus Transceivers With 3-State Outputs(八總線收發(fā)器(三態(tài)輸出)) |
| 中文描述： | 八路總線收發(fā)器與三態(tài)輸出（八總線收發(fā)器（三態(tài)輸出）） |
| 文件頁(yè)數(shù)： | 3/6頁(yè) |
| 文件大小： | 129K |
| 代理商： | SN54ABT620A |
SN54ABT620A, SN74ABT620A
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS465 – OCTOBER 1992
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions (see Note 2)
SN54ABT620A
MIN
SN74ABT620A
MIN
UNIT
MAX
MAX
VCC
VIH
VIL
VI
IOH
IOL
t/
v
TA
NOTE 2: Unused or floating pins (input or I/O) must be held high or low.
Supply voltage
4.5
5.5
4.5
5.5
V
High-level input voltage
2
2
V
Low-level input voltage
0.8
0.8
V
Input voltage
0
VCC
–24
0
VCC
–32
V
High-level output current
mA
Low-level output current
48
64
mA
Input transition rise or fall rate
Outputs enabled
5
5
ns/V
°
C
Operating free-air temperature
–55
125
–40
85
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
TA = 25
°
C
TYP
SN54ABT620A
SN74ABT620A
UNIT
MIN
MAX
MIN
MAX
MIN
MAX
VIK
VCC = 4.5 V,
VCC = 4.5 V,
VCC = 5 V,
II = –18 mA
IOH = –3 mA
IOH = –3 mA
IOH = –24 mA
IOH = –32 mA
IOL = 48 mA
IOL = 64 mA
–1.2
–1.2
–1.2
V
VOH
2.5
2.5
2.5
V
3
3
3
VCC= 4 5 V
VCC = 4.5 V
2
2
2
2
VOL
VCC= 4 5 V
VCC = 4.5 V
0.55
0.55
0.55
V
0.55
±
1
±
100
50
II
VCC = 5.5 V,
VCC 5.5 V,
VI = VCC or GND
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 0,
VCC = 5.5 V,
VCC = 5.5 V,
Control inputs
±
1
±
1
μ
A
A or B ports
±
100
50
±
100
50
IOZH§
IOZL§
IOFF
ICEX
IO
VO = 2.7 V
VO = 0.5 V
VI or VO
≤
4.5 V
VO = 5.5 V
VO = 2.5 V
μ
A
μ
A
μ
A
μ
A
mA
μ
A
mA
–50
±
100
50
–50
–50
±
100
50
Outputs high
50
–50
–100
–180
–50
–180
–50
–180
ICC
VCC = 5.5 V,
IO= 0
IO = 0,
VI = VCC or GND
5 5 V
A or B ports
Outputs high
5
250
250
250
Outputs low
24
30
30
30
Outputs
disabled
0.5
250
250
250
μ
A
VCC = 5.5 V,
One input at 3 4 V
One input at 3.4 V,
Other inputs at
VCC or GND
Data inputs
Outputs
enabled
1.5
1.5
1.5
ICC#
Outputs
disabled
0.05
0.05
0.05
mA
Control inputs
1.5
1.5
1.5
Ci
Cio
VI = 2.5 V or 0.5 V
VO = 2.5 V or 0.5 V
Control inputs
4
pF
A or B ports
7
pF
All typical values are at VCC = 5 V.
On products compliant to MIL-STD-883, Class B, this parameter does not apply.
§The parameters IOZH and IOZL include the input leakage current.
Not more than one output should be tested at a time, and the duration of the test should not exceed one second.
#This is the increase in supply current for each input that is at the specified TTL voltage level rather than VCC or GND.
P
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