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參數(shù)資料
| 型號(hào)： | 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(dòng)器，三態(tài)輸出 |
| 文件頁數(shù)： | 3/17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
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions
SN54ALS244C
MIN
NOM
SN74ALS244C
MIN
NOM
UNIT
MAX
MAX
VCC
VIH
Supply voltage
4.5
5
5.5
4.5
5
5.5
V
High-level input voltage
2
2
V
VIL
Low level input voltage
Low-level input voltage
0.8
0.7
0.8
V
IOH
High-level output current
–12
–15
mA
IOL
Low level output current
Low-level output current
12
24
48§
mA
TA
Applies over temperature range –55
°
C to 70
°
C
Applies over temperature range 70
°
C to 125
°
C
§Applies only to the -1 version and only if VCC is between 4.75 V and 5.25 V
Operating free-air temperature
–55
125
0
70
°
C
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54ALS244C
TYP
SN74ALS244C
TYP
UNIT
MIN
MAX
–1.5
MIN
MAX
–1.5
VIK
VCC = 4.5 V,
II = –18 mA
IOH = –0.4 mA
IOH = –3 mA
IOH = –12 mA
IOH = –15 mA
IOL = 12 mA
IOL = 24 mA
IOL = 48 mA (-1 version)
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
V
VCC= 4 5 V to 5 5 V
VCC = 4.5 V to 5.5 V
VCC –2
2.4
VCC –2
2.4
VOH
3.2
3.2
V
VCC= 4 5 V
VCC = 4.5 V
2
2
0.25
0.4
0.25
0.4
VOL
VCC = 4.5 V
0.35
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,
20
20
μ
A
μ
A
mA
μ
A
mA
–20
–20
0.1
0.1
20
20
–0.1
–0.1
–20
–112
–30
–112
mA
9
18
9
17
ICC
VCC = 5.5 V
Outputs low
Outputs disabled
15
17
25
29
15
17
24
27
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.
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