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SN74ALS243ANSR Fiches technique(PDF) 3 Page - Texas Instruments

No de pièce SN74ALS243ANSR
Description  QUADRUPLE BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

SN74ALS243ANSR Fiches technique(HTML) 3 Page - Texas Instruments

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SN54ALS243A, SN74ALS243A
QUADRUPLE BUS TRANSCEIVERS
WITH 3STATE OUTPUTS
SDAS069B − DECEMBER 1982 − REVISED DECEMBER 1994
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251−1443
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54ALS243A
SN74ALS243A
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP†
MAX
MIN
TYP†
MAX
UNIT
VIK
VCC = 4.5 V,
II = − 18 mA
− 1.2
− 1.2
V
VCC = 4.5 V to 5.5 V,
IOH = − 0.4 mA
VCC −2
VCC −2
VOH
IOH = − 3 mA
2.4
3.2
2.4
3.2
V
VOH
VCC = 4.5 V
IOH = − 12 mA
2
V
VCC = 4.5 V
IOH = − 15 mA
2
VOL
VCC = 4.5 V
IOL = 12 mA
0.25
0.4
0.25
0.4
V
VOL
VCC = 4.5 V
IOL = 24 mA
0.35
0.5
V
II
Control inputs
VCC = 5.5 V
VI = 7 V
0.1
0.1
mA
II
A or B ports
VCC = 5.5 V
VI = 5.5 V
0.1
0.1
mA
IIH
Control inputs
VCC = 5.5 V,
VI = 2.7 V
20
20
A
IIH
A or B ports‡
VCC = 5.5 V,
VI = 2.7 V
20
20
µA
IIL
Control inputs
VCC = 5.5 V,
VI = 0.4 V
− 0.1
− 0.1
mA
IIL
A or B ports‡
VCC = 5.5 V,
VI = 0.4 V
− 0.1
− 0.1
mA
IO§
VCC = 5.5 V,
VO = 2.25 V
−20
−112
−30
−112
mA
Outputs high
15
30
15
25
ICC
VCC = 5.5 V
Outputs low
20
35
20
30
mA
ICC
VCC = 5.5 V
Outputs disabled
21
37
21
32
mA
† All typical values are at VCC = 5 V, TA = 25°C.
‡ For I/O ports, the parameters IIH and IIL include the off-state output current.
§ The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.
switching characteristics (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
R1 = 500
,
R2 = 500
,
TA = MIN to MAX¶
UNIT
(INPUT)
(OUTPUT)
SN54ALS243A
SN74ALS243A
MIN
MAX
MIN
MAX
tPLH
A or B
B or A
4
15
4
11
ns
tPHL
A or B
B or A
4
15
4
11
ns
tPZH
OEAB
B
7
25
7
20
ns
tPZL
OEAB
B
7
25
7
20
ns
tPHZ
OEAB
B
2
16
2
14
ns
tPLZ
OEAB
B
3
27
3
22
ns
tPZH
OEBA
A
7
25
7
20
ns
tPZL
OEBA
A
7
25
7
20
ns
tPHZ
OEBA
A
2
16
2
14
ns
tPLZ
OEBA
A
3
27
3
22
ns
¶ For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.


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