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参数资料
| 型号： | SN74LS244MEL |
| 厂商： | ON SEMICONDUCTOR |
| 元件分类： | 总线收发器 |
| 英文描述： | LS SERIES, DUAL 4-BIT DRIVER, TRUE OUTPUT, PDSO20 |
| 封装： | EIAJ, SOIC-20 |
| 文件页数： | 3/7页 |
| 文件大小： | 211K |
| 代理商： | SN74LS244MEL |
SN74LS240, SN74LS244
http://onsemi.com
3
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Symbol
Parameter
Limits
Unit
Test Conditions
Min
Typ
Max
VIH
Input HIGH Voltage
2.0
V
Guaranteed Input HIGH Voltage for
All Inputs
VIL
Input LOW Voltage
0.8
V
Guaranteed Input LOW Voltage for
All Inputs
VT+VT
Hysteresis
0.2
0.4
V
VCC = MIN
VIK
Input Clamp Diode Voltage
0.65
1.5
V
VCC = MIN, IIN = 18 mA
VOH
Output HIGH Voltage
2.4
3.4
V
VCC = MIN, IOH = 3.0 mA
2.0
V
VCC = MIN, IOH = MAX
VOL
Output LOW Voltage
0.25
0.4
V
IOL = 12 mA
VCC = VCC MIN,
VIN = VIL or VIH
per Truth Table
0.35
0.5
V
IOL = 24 mA
IOZH
Output Off Current HIGH
20
μA
VCC = MAX, VOUT = 2.7 V
IOZL
Output Off Current LOW
20
μA
VCC = MAX, VOUT = 0.4 V
IIH
Input HIGH Current
20
μA
VCC = MAX, VIN = 2.7 V
0.1
mA
VCC = MAX, VIN = 7.0 V
IIL
Input LOW Current
0.2
mA
VCC = MAX, VIN = 0.4 V
IOS
Output Short Circuit Current (Note 1)
40
225
mA
VCC = MAX
ICC
Power Supply Current
Total, Output HIGH
27
mA
VCC = MAX
Total, Output LOW
LS240
44
LS244
46
Total at HIGH Z
LS240
50
LS244
54
1. Not more than one output should be shorted at a time, nor for more than 1 second.
AC CHARACTERISTICS (TA = 25°C, VCC = 5.0 V)
Symbol
Parameter
Limits
Unit
Test Conditions
Min
Typ
Max
tPLH
tPHL
Propagation Delay, Data to Output
LS240
9.0
12
14
18
ns
CL = 45 pF,
RL = 667 Ω
tPLH
tPHL
Propagation Delay, Data to Output
LS244
12
18
ns
tPZH
Output Enable Time to HIGH Level
15
23
ns
tPZL
Output Enable Time to LOW Level
20
30
ns
tPLZ
Output Disable Time from LOW Level
15
25
ns
CL = 5.0 pF,
RL = 667 Ω
tPHZ
Output Disable Time from HIGH Level
10
18
ns
相关PDF资料 |
PDF描述 |
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| SN74LS240NS | LS SERIES, DUAL 4-BIT DRIVER, INVERTED OUTPUT, PDIP20 |
| SN74LS241DWR2 | LS SERIES, DUAL 4-BIT DRIVER, TRUE OUTPUT, PDSO20 |
| SN74LS242J | LS SERIES, 4-BIT TRANSCEIVER, INVERTED OUTPUT, CDIP14 |
| SN74LS242FN | LS SERIES, 4-BIT TRANSCEIVER, INVERTED OUTPUT, PQCC20 |
| SN74LS243JD | LS SERIES, 4-BIT TRANSCEIVER, TRUE OUTPUT, CDIP14 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| SN74LS244ML1 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| SN74LS244N | 功能描述:缓冲器和线路驱动器 Tri-State Octal 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 |
| SN74LS244N | 制造商:Texas Instruments 功能描述:IC 74LS 74LS244 DIP20 5.25V |
| SN74LS244N | 制造商:Texas Instruments 功能描述:IC 74LS 74LS244 DIP20 5.25V |
| SN74LS244N3 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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