参数资料
型号: SN74AC244N
厂商: TEXAS INSTRUMENTS INC
元件分类: 总线收发器
英文描述: AC SERIES, DUAL 4-BIT DRIVER, TRUE OUTPUT, PDIP20
封装: ROHS COMPLIANT, PLASTIC, DIP-20
文件页数: 14/19页
文件大小: 755K
代理商: SN74AC244N
SN54AC244, SN74AC244
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCAS514E JUNE 1995 REVISED OCTOBER 2003
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
V
TA = 25°C
SN54AC244
SN74AC244
UNIT
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
3 V
2.9
IOH = 50 μA
4.5 V
4.4
IOH
50
μA
5.5 V
5.4
V
IOH = 12 mA
3 V
2.56
2.4
2.46
V
VOH
I
24
A
4.5 V
3.86
3.7
3.76
V
IOH = 24 mA
5.5 V
4.86
4.7
4.76
IOH = 50 mA
5.5 V
3.85
IOH = 75 mA
5.5 V
3.85
3 V
0.1
IOL = 50 μA
4.5 V
0.1
IOL
50
μA
5.5 V
0.1
V
IOL = 12 mA
3 V
0.36
0.5
0.44
V
VOL
I
24 mA
4.5 V
0.36
0.5
0.44
V
IOL = 24 mA
5.5 V
0.36
0.5
0.44
IOL = 50 mA
5.5 V
1.65
IOL = 75 mA
5.5 V
1.65
I
Data inputs
VI = VCC or GND
55V
±0.1
±1
A
II
Control inputs
VI = VCC or GND
5.5 V
±0.1
±1
μA
IOZ
VO = VCC or GND,
VI(OE) = VIL or VIH
5.5 V
±0.25
±5
±2.5
μA
ICC
VI = VCC or GND,
IO = 0
5.5 V
4
80
40
μA
Ci
VI = VCC or GND
5 V
2.5
pF
Not more than one output should be tested at a time, and the duration of the test should not exceed 10 ms.
switching
characteristics
over
recommended
operating
free-air
temperature
range,
VCC = 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
TO
TA = 25°C
SN54AC244
SN74AC244
UNIT
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
tPLH
A
Y
2
6.5
9
1
12.5
1.5
10
ns
tPHL
A
Y
2
6.5
9
1
12
2
10
ns
tPZH
OE
Y
2
6
10.5
1
11.5
1.5
11
ns
tPZL
OE
Y
2.5
7.5
10
1
13
2
11
ns
tPHZ
OE
Y
3
7
10
1
12.5
1.5
10.5
ns
tPLZ
OE
Y
2.5
7.5
10.5
1
13
2.5
11.5
ns
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