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參數(shù)資料
| 型號： | SN54ALS873BJT |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 通用總線功能 |
| 英文描述： | DUAL 4-BIT D-TYPE LATCHES WITH 3-STATE OUTPUTS |
| 中文描述： | 雙4位D型鎖存器具有三態(tài)輸出 |
| 文件頁數(shù)： | 5/8頁 |
| 文件大?。?/td> | 121K |
| 代理商： | SN54ALS873BJT |
SN54ALS873B, SN54AS873A, SN74ALS873B, SN74AS873A
DUAL 4-BIT D-TYPE LATCHES
WITH 3-STATE OUTPUTS
SDAS036D – APRIL 1982 – REVISED AUGUST 1995
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54AS873A
MIN
TYP
SN74AS873A
MIN
TYP
UNIT
MAX
MAX
VIK
VCC = 4.5 V,
VCC = 4.5 V to 5.5 V,
II = –18 mA
IOH = –2 mA
IOH = –12 mA
IOH = –15 mA
IOL = 32 mA
IOL = 48 mA
VO = 2.7 V
VO = 0.4 V
VI = 7 V
VI = 2.7 V
VI = 0.4 V
VO = 2.25 V
Outputs high
–1.2
–1.2
V
VCC– 2
2.4
VCC– 2
VOH
VCC= 4 5 V
VCC = 4.5 V
3.2
V
2.4
3.3
VOL
VCC= 4 5 V
VCC = 4.5 V
0.25
0.5
V
0.35
0.5
IOZH
IOZL
II
IIH
IIL
IO
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
50
50
μ
A
μ
A
mA
μ
A
mA
–50
–50
0.1
0.1
20
20
– 0.5
– 0.5
–30
–112
–30
–112
mA
68
110
68
110
ICC
VCC = 5.5 V
Outputs low
Outputs disabled
67
80
109
129
67
80
109
129
mA
All typical values are at VCC = 5 V, TA = 25
°
C.
The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.
timing requirements over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (see Figure 1)
SN54AS873A
MIN
5
SN74AS873A
MIN
5
UNIT
MAX
MAX
t *
tw*
Pulse duration
CLR low
ns
LE high
6
5
tsu*
th*
* On products compliant to MIL-STD-883, Class B, this parameter is based on characterization data but is not production tested.
Setup time, data before LE
↓
Hold time, data after LE
↓
2
2
ns
4.5
4.5
ns
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