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參數(shù)資料
| 型號： | SN54ALS243AJ |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 通用總線功能 |
| 英文描述： | QUADRUPLE BUS TRANSCEIVERS WITH 3-STATE OUTPUTS |
| 中文描述： | 翻兩番總線收發(fā)器與三態(tài)輸出 |
| 文件頁數(shù)： | 3/5頁 |
| 文件大?。?/td> | 85K |
| 代理商： | SN54ALS243AJ |
SN54ALS243A, SN74ALS243A
QUADRUPLE BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SDAS069B – DECEMBER 1982 – REVISED DECEMBER 1994
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54ALS243A
MIN
TYP
SN74ALS243A
MIN
TYP
UNIT
MAX
MAX
VIK
VCC = 4.5 V,
VCC = 4.5 V to 5.5 V,
II = –18 mA
IOH = –0.4 mA
IOH = –3 mA
IOH = –12 mA
IOH = –15 mA
IOL = 12 mA
IOL = 24 mA
VI = 7 V
VI = 5.5 V
–1.2
–1.2
V
VCC –2
2.4
VCC –2
2.4
VOH
3.2
3.2
V
VCC = 4.5 V
2
2
VOL
VCC= 4 5 V
VCC = 4.5 V
0.25
0.4
0.25
0.4
V
0.35
0.5
II
Control inputs
VCC= 5 5 V
VCC = 5.5 V
0.1
0.1
mA
A or B ports
0.1
0.1
IIH
Control inputs
A or B ports
VCC= 5 5 V
VCC = 5.5 V,
VI= 2 7 V
VI = 2.7 V
20
20
μ
A
20
20
IIL
Control inputs
A or B ports
VCC= 5 5 V
VCC = 5.5 V,
VI= 0 4 V
VI = 0.4 V
–0.1
–0.1
mA
–0.1
–0.1
IO§
VCC = 5.5 V,
VO = 2.25 V
Outputs high
–20
–112
–30
–112
mA
15
30
15
25
ICC
VCC = 5.5 V
Outputs low
Outputs disabled
20
21
35
37
20
21
30
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
SN54ALS243A
MIN
MAX
4
15
UNIT
SN74ALS243A
MIN
4
MAX
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
tPZH
tPZL
tPHZ
tPLZ
A or B
B or A
11
ns
4
15
4
11
OEAB
B
7
25
7
20
ns
7
25
7
20
OEAB
B
2
16
2
14
ns
3
27
3
22
OEBA
A
7
25
7
20
ns
7
25
7
20
OEBA
A
2
3
16
27
2
3
14
22
ns
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
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