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參數(shù)資料
| 型號： | SN74AS877JT |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 總線收發(fā)器 |
| 英文描述： | AS SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, CDIP24 |
| 封裝： | GLASS, DIP-24 |
| 文件頁數(shù)： | 14/17頁 |
| 文件大?。?/td> | 264K |
| 代理商： | SN74AS877JT |
SN54AS877, SN74AS877
8BIT UNIVERSAL TRANCEIVER PORT CONTROLLERS
SDAS234 D2661, DECEMBER 1982 REVISED AUGUST 1985
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 77001
6
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54AS877
SN74AS877
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNIT
VIK
VCC = 4.5 V,
II = 18 mA
1.2
V
A1-A8
VCC = 4.5 V,
IOH = 12 mA
2
3.2
VOH B1-B8
VCC = 4.5 V,
IOH = 15 mA
2
3.3
V
All outputs
VCC = 4.5 V to 5.5 V,
IOH = 2 mA
VCC 2
All outputs
VCC = 4.5 V,
IOL = 32 mA
0.25
0.5
VOL except Q8
VCC = 4.5 V,
IOL = 48 mA
0.35
0.5
V
Q8
VCC = 4.5 V,
IOL = 20 mA
0.25
0.5
0.25
0.5
S0, S1, S2
VCC = 5.5 V,
VI = 7 V
0.3
II
CLK and SERIN
VCC = 5.5 V,
VI = 7 V
0.1
mA
A1-A8, B1-B8
VCC = 5.5 V,
VI = 5.5 V
0.2
S0, S1, S2
60
IIH
CLK and SERIN
VCC = 5.5 V,
VI = 2.7 V
20
A
A1-A8, B1-B8
70
S0, S1, S2
1
IIL
CLK and SERIN
VCC = 5.5 V,
VI = 0.4 V
0.5
mA
A1-A8, B1-B8
0.75
IO§
Except Q8
VCC = 5.5 V,
VO = 2.25 V
30
112
30
112
mA
IO§
Q8
VCC = 5.5 V,
VO = 2.25 V
20
112
20
112
mA
ICC
VCC = 5.5 V
136
220
136
220
mA
All typical values are at VCC = 5 V, TA = 25°C.
For I/O ports, the parameters IIH and IIL include the output currents IOZH and IOZL, respectively.
§ The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.
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