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参数资料
| 型号： | SN74LS244NSR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 总线收发器 |
| 英文描述： | LS SERIES, DUAL 4-BIT DRIVER, TRUE OUTPUT, PDSO20 |
| 封装： | GREEN, PLASTIC, SOP-20 |
| 文件页数： | 26/28页 |
| 文件大小： | 860K |
| 代理商： | SN74LS244NSR |
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SN54LS240, SN54LS241, SN54LS244, SN54S240, SN54S241, SN54S244
SN74LS240, SN74LS241, SN74LS244, SN74S240, SN74S241, SN74S244
OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS
SDLS144C APRIL 1985 REVISED MAY 2010
7
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54LS’
SN74LS’
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNIT
VIK
VCC = MIN,
II = 18 mA
1.5
V
Hysteresis
(VT+ VT)
VCC = MIN
0.2
0.4
0.2
0.4
V
VCC = MIN,
IOH = 3 mA
VIH = 2 V,
VIL = MAX,
2.4
3.4
2.4
3.4
V
VOH
VCC = MIN,
IOH = MAX
VIH = 2 V,
VIL = 0.5 V,
2
V
VCC = MIN,
V
2V
IOL = 12 mA
0.4
V
VOL
VCC = MIN,
VIL = MAX
VIH = 2 V,
IOL = 24 mA
0.5
V
IOZH
VCC = MAX,
VIL = MAX
VIH = 2 V,
VO = 2.7 V
20
A
IOZL
VCC = MAX,
VIL = MAX
VIH = 2 V,
VO = 0.4 V
20
A
II
VCC = MAX,
VI = 7 V
0.1
mA
IIH
VCC = MAX,
VI = 2.7 V
20
A
IIL
VCC = MAX,
VIL = 0.4 V
0.2
mA
IOS§
VCC = MAX,
40
225
40
225
mA
Outputs high
All
17
27
17
27
V
MAX
Outputs low
’LS240
26
44
26
44
ICC
VCC = MAX,
Output open
Outputs low
’LS241, ’LS244
27
46
27
46
mA
ICC
Output open
Outputs disabled
’LS240
29
50
29
50
mA
Outputs disabled
’LS241, ’LS244
32
54
32
54
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
All typical values are at VCC = 5 V, TA = 25°C.
§ Not more than one output should be shorted at a time, and duration of the short-circuit should not exceed one second.
switching characteristics, VCC = 5 V, TA = 25°C (see Figure 1)
PARAMETER
TEST CONDITIONS
’LS240
’LS241, ’LS244
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNIT
tPLH
R
667
C
45 pF
9
14
12
18
ns
tPHL
RL = 667 ,
CL = 45 pF
12
18
12
18
ns
tPZL
R
667
C
45 F
20
30
20
30
ns
tPZH
RL = 667 ,
CL = 45 pF
15
23
15
23
ns
tPLZ
R
667
C
5pF
10
20
10
20
ns
tPHZ
RL = 667 ,
CL = 5 pF
15
25
15
25
ns
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SN74LS244NSRE4 | 功能描述:缓冲器和线路驱动器 Octal Buff/Line Drvr W/3-State Otpt RoHS:否 制造商:Micrel 输入线路数量:1 输出线路数量:2 极性:Non-Inverting 电源电压-最大:+/- 5.5 V 电源电压-最小:+/- 2.37 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Reel |
| SN74LS244NSRG4 | 功能描述:缓冲器和线路驱动器 Octal Buff/Line Drvr W/3-State Otpt RoHS:否 制造商:Micrel 输入线路数量:1 输出线路数量:2 极性:Non-Inverting 电源电压-最大:+/- 5.5 V 电源电压-最小:+/- 2.37 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Reel |
| SN74LS245D | 制造商:Motorola Inc 功能描述: |
| SN74LS245DB | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| SN74LS245DBLE | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
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