參數(shù)資料
型號(hào): LV244
廠商: Texas Instruments, Inc.
英文描述: OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS
中文描述: 八路緩沖器/ 3司機(jī)態(tài)輸出
文件頁(yè)數(shù): 4/7頁(yè)
文件大小: 130K
代理商: LV244
SN54LV244A, SN74LV244A
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCLS383B – SEPTEMBER 1997 – REVISED JUNE 1998
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
SN54LV244A
MIN
VCC–0.1
2
SN74LV244A
MIN
VCC–0.1
2
UNIT
TYP
MAX
TYP
MAX
IOH = –50
μ
A
IOH = –2 mA
IOH = –8 mA
IOH = –16 mA
IOL = 50
μ
A
IOL = 2 mA
IOL = 8 mA
IOL = 16 mA
VI = VCC or GND
VO = VCC or GND
VI = VCC or GND,
VI or VO = 0 to 5.5 V
2 V to 5.5 V
VOH
2.3 V
V
3 V
2.48
2.48
4.5 V
3.8
3.8
2 V to 5.5 V
0.1
0.1
VOL
2.3 V
0.4
0.4
V
3 V
0.44
0.44
4.5 V
0.55
±
1
±
5
20
0.55
±
1
±
5
20
II
IOZ
ICC
Ioff
5.5 V
μ
A
μ
A
μ
A
μ
A
5.5 V
IO = 0
5.5 V
0 V
20
20
Ci
VI= VCCor GND
VI = VCC or GND
3.3 V
5 V
2.3
2.3
2.3
2.3
pF
switching characteristics over recommended operating free-air temperature range,
V
CC
= 2.5 V
±
0.2 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
LOAD
TA = 25
°
C
TYP
SN54LV244A
MIN
1
SN74LV244A
MIN
1
UNIT
(OUTPUT)
CAPACITANCE
MIN
MAX
12.5
MAX
MAX
tpd*
ten*
tdis*
tpd
ten
tdis
tsk(o)
A
Y
7.5
15
15
OE
Y
CL = 15 pF
8.9
14.6
1
17
1
17
ns
OE
Y
9.1
14.1
1
16
1
16
A
Y
9.5
15.3
1
18
1
18
OE
Y
CL= 50 pF
CL = 50 pF
10.8
17.8
1
21
1
21
ns
OE
Y
13.4
19.2
1
21
1
21
2
2
* On products compliant to MIL-PRF-38535, this parameter is not production tested.
Skew between any two outputs of the same package switching in the same direction
switching characteristics over recommended operating free-air temperature range,
V
CC
= 3.3 V
±
0.3 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
LOAD
TA = 25
°
C
TYP
SN54LV244A
SN74LV244A
UNIT
(OUTPUT)
CAPACITANCE
MIN
MAX
8.4
MIN
MAX
MIN
MAX
tpd*
ten*
tdis*
tpd
ten
tdis
tsk(o)
A
Y
5.4
1
10
1
10
OE
Y
CL = 15 pF
6.3
10.6
1
12.5
1
12.5
ns
OE
Y
7.6
11
1
13
1
13
A
Y
6.8
11.9
1
13.5
1
13.5
OE
Y
CL= 50 pF
CL = 50 pF
7.8
14.1
1
16
1
16
ns
OE
Y
11
16
1
18
1
18
1.5
1.5
* On products compliant to MIL-PRF-38535, this parameter is not production tested.
Skew between any two outputs of the same package switching in the same direction
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
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