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): 4/17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
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
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
SN54ALS244C
MIN
MAX
1
16
UNIT
SN74ALS244C
MIN
2
MAX
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
A
Y
10
ns
3
12
3
10
OE
Y
1
26
3
20
ns
1
24
3
20
OE
Y
2
1
10
26
2
1
10
13
ns
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, V
CC
Input voltage, V
I
Voltage applied to a disabled 3-state output
Operating free-air temperature range, T
A
: SN54AS244A
7 V
7 V
5.5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74AS244A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–55
°
C to 125
°
C
0
°
C to 70
°
C
–65
°
C to 150
°
C
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
recommended operating conditions
SN54AS244A
SN74AS244A
UNIT
MIN
NOM
MAX
MIN
NOM
MAX
VCC
VIH
VIL
IOH
IOL
TA
Supply voltage
4.5
5
5.5
4.5
5
5.5
V
High-level input voltage
2
2
V
Low-level input voltage
0.8
0.8
V
High-level output current
–12
–15
mA
Low-level output current
48
64
mA
°
C
Operating free-air temperature
–55
125
0
70
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