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參數(shù)資料
| 型號： | SN74ALS642ADW |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 總線收發(fā)器 |
| 英文描述： | OCTAL BUS TRANSCEIVERS WITH OPEN-COLLECTOR OUTPUTS |
| 中文描述： | 八路總線收發(fā)器集電極開路輸出 |
| 文件頁數(shù)： | 3/7頁 |
| 文件大?。?/td> | 115K |
| 代理商： | SN74ALS642ADW |
SN74ALS641A, SN74ALS642A, SN74AS641
OCTAL BUS TRANSCEIVERS
WITH OPEN-COLLECTOR OUTPUTS
SDAS300 – MARCH 1995
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN74ALS641A
SN74ALS642A
UNIT
MIN
TYP
MAX
VIK
VCC = 4.5 V,
II = – 18 mA
– 1.5
V
IOH
VCC = 4.5 V,
VOH = 5.5 V
0.1
mA
IOL = 12 mA
0.25
0.4
VOL
VCC = 4.5 V
IOL = 24 mA
0.35
0.5
V
IOL = 48 mA
0.35
0.5
II
Control inputs
VCC = 5.5 V,
VI = 7 V
0.1
mA
IIH
Control inputs
VCC =5 5V
VI =2 7V
20
A
IIH
A or B ports§
VCC = 5.5 V,
VI = 2.7 V
20
A
IIL
Control inputs
VCC =5 5V
VI =0 4V
– 0.1
mA
IIL
A or B ports§
VCC = 5.5 V,
VI = 0.4 V
– 0.1
mA
SN74ALS641A
VCC =5 5V
Outputs high
25
37
ICC
SN74ALS641A
VCC = 5.5 V
Outputs low
33
47
mA
ICC
SN74ALS642A
VCC =5 5V
Outputs high
8
15
mA
SN74ALS642A
VCC = 5.5 V
Outputs low
18
28
All typical values are at VCC = 5 V, TA = 25°C.
Applies only to the -1 version and only if VCC is between 4.75 V and 5.25 V
§ For I/O ports, the parameters IIH and IIL include the off-state output current.
switching characteristics (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
RL = 680 ,
TA = MIN to MAX
UNIT
(INPUT)
(OUTPUT)
SN74ALS641A
SN74ALS642A
MIN
MAX
MIN
MAX
tPLH
AorB
BorA
5
25
10
30
ns
tPHL
A or B
B or A
3
18
5
22
ns
tPLH
OE
AorB
8
30
10
30
ns
tPHL
OE
A or B
8
30
15
38
ns
tPLH
DIR
AorB
8
32
10
30
ns
tPHL
DIR
A or B
8
32
15
38
ns
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
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| SN74ALS642AN | OCTAL BUS TRANSCEIVERS WITH OPEN-COLLECTOR OUTPUTS |
| SN74ALS645ADW | OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS |
| SN74ALS645ADWR | OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS |
| SN74ALS645AN | OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| SN74ALS642A-IN | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| SN74ALS642AN | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| SN74ALS643A-1N | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| SN74ALS644A-1DW | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| SN74ALS644AN | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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