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參數(shù)資料
| 型號： | SN54AS244AN |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS |
| 中文描述： | 八路緩沖器和線路驅(qū)動器，三態(tài)輸出 |
| 文件頁數(shù)： | 5/17頁 |
| 文件大?。?/td> | 535K |
| 代理商： | SN54AS244AN |
SN54ALS244C, SN54AS244A, SN74ALS244C, SN74AS244A
OCTAL BUFFERS AND LINE DRIVERS
WITH 3-STATE OUTPUTS
SDAS142C – JULY 1987 – 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
SN54AS244A
MIN
TYP
SN74AS244A
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 = –3 mA
IOH = –12 mA
IOH = –15 mA
IOL = 48 mA
IOL = 64 mA
VO = 2.7 V
VO = 0.4 V
VI = 7 V
VI = 2.7 V
–1.2
–1.2
V
VCC –2
2.4
VCC –2
2.4
VOH
3.4
3.4
V
VCC = 4.5 V
2.4
2.4
VOL
VCC= 4 5 V
VCC = 4.5 V
0.55
V
0.55
IOZH
IOZL
II
IIH
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
–50
–50
0.1
0.1
20
20
IIL
OE
VCC= 5 5 V
VCC = 5.5 V,
VI= 0 4 V
VI = 0.4 V
–0.5
–0.5
mA
A
–1
–1
IO
VCC = 5.5 V,
VO = 2.25 V
Outputs high
–50
–150
–50
–150
mA
22
34
22
34
ICC
VCC = 5.5 V
Outputs low
Outputs disabled
60
34
90
54
60
34
90
54
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.
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§
SN54AS244A
UNIT
SN74AS244A
MIN
MAX
MIN
MAX
6.2
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
A
Y
2
9
2
ns
1
7
1
6.2
OE
Y
1
10
1
9
ns
2
8
2
7.5
OE
Y
1
1
6.5
10.5
1
1
6
9
ns
§For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
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