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SN74ACT1284DWR bảng dữ liệu(PDF) 4 Page - Texas Instruments

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SN74ACT1284DWR bảng dữ liệu(HTML) 4 Page - Texas Instruments

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SN54ACT1284, SN74ACT1284
7BIT BUS INTERFACES
WITH 3STATE OUTPUTS
SCAS459D − NOVEMBER 1994 − REVISED OCTOBER 2003
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended ranges of operating free-air temperature and supply
voltage (unless otherwise noted)
PARAMETER
TEST CONDITIONS
VCC†
SN54ACT1284
SN74ACT1284
UNIT
PARAMETER
TEST CONDITIONS
VCC†
MIN
TYP
MAX
MIN
TYP
MAX
UNIT
Vhys
Input
VIT+ − VIT− for all inputs
5 V
0.4
0.4
V
Vhys
Input
hysteresis
VIT+ − VIT− for all inputs
4.7 V
0.2
0.2
V
B port
IOH = −14 mA
4.7 V
2.4
2.4
VOH
A port
IOH = −50 µA
MIN
to MAX
VCC−0.2
VCC −0.2
V
A port
IOH = −4 mA
4.7 V
3.7
3.7
B port
IOL = 14 mA
4.7 V
0.4
0.4
VOL
A port
IOL = 50 µA
4.7 V
0.2
0.2
V
VOL
A port
IOL = 4 mA
4.7 V
0.4
0.4
V
II
VI = VCC or GND
5.5 V
±1
±1
µA
IOZ
A or B ports‡
VO = VCC or GND
5.5 V
±20
±20
µA
Ioff
B port
VI or VO ≤ 7 V
0 V
±100
±100
µA
ICC
VI = VCC or GND,
IO = 0
5.5 V
1.5
1.5
mA
Ci
Control inputs
VI = VCC or GND
5 V
4
4
pF
Cio
A or B ports
VO = VCC or GND
5 V
12
12
pF
ZO
B port
IOH = −20 mA,
IOH = −50 mA
5 V
8
30
8
30
† For I/O ports, the parameter IOZ includes the input leakage current II.
‡ For conditions shown as MIN or MAX, use the appropriate values under recommended operating conditions.
switching characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
TO
SN54ACT1284
SN74ACT1284
UNIT
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
MIN
MAX
MIN
MAX
UNIT
tPLH
Totem pole
A or B
B or A
1
20
1
20
ns
tPHL
Totem pole
A or B
B or A
1
20
1
20
ns
SR
Totem pole
B output
0.05
0.4
0.05
0.4
V/ns
tpd(EN)
Totem pole
HD
B
1
20
1
20
ns
tpd(DIS)
Totem pole
HD
B
1
20
1
20
ns
tr, tf
Open drain
A
B
120
120
ns
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.


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