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参数资料
| 型号： | SN74AHCT245NSR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 总线收发器 |
| 英文描述： | AHCT/VHCT/VT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20 |
| 封装： | GREEN, PLASTIC, SOP-20 |
| 文件页数： | 17/23页 |
| 文件大小： | 991K |
| 代理商： | SN74AHCT245NSR |
SN54AHCT245, SN74AHCT245
OCTAL BUS TRANSCEIVERS
WITH 3STATE OUTPUTS
SCLS233N OCTOBER 1995 REVISED MARCH 2005
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions (see Note 4)
SN54AHCT245
SN74AHCT245
UNIT
MIN
MAX
MIN
MAX
UNIT
VCC
Supply voltage
4.5
5.5
4.5
5.5
V
VIH
High-level input voltage
2
V
VIL
Low-level input voltage
0.8
V
VI
Input voltage
0
5.5
0
5.5
V
VO
Output voltage
0
VCC
0
VCC
V
IOH
High-level output current
8
mA
IOL
Low-level output current
8
mA
t/v Input transition rise or fall rate
20
ns/V
TA
Operating free-air temperature
55
125
40
85
°C
NOTE 4: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
TA = 25°C
SN54AHCT245
SN74AHCT245
UNIT
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
VOH
IOH = 50 mA
4.5 V
4.4
4.5
4.4
V
VOH
IOH = 8 mA
4.5 V
3.94
3.8
V
VOL
IOL = 50 mA
4.5 V
0.1
V
VOL
IOL = 8 mA
4.5 V
0.36
0.44
V
II
OE or DIR
VI = 5.5 V or GND
0 V to 5.5 V
±0.1
±1*
±1
mA
IOZ
A or B inputs
VO = VCC or GND
5.5 V
±0.25
±2.5
mA
ICC
VI = VCC or GND, IO = 0
5.5 V
4
40
mA
ICC
One input at 3.4 V,
Other inputs at
VCC or GND
5.5 V
1.35
1.5
mA
Ci
OE or DIR
VI = VCC or GND
5 V
2.5
10
pF
Cio
A or B inputs
VI = VCC or GND
5 V
4
pF
* On products compliant to MIL-PRF-38535, this parameter is not production tested at VCC = 0 V.
For I/O ports, the parameter IOZ includes the input leakage current.
This is the increase in supply current for each input at one of the specified TTL voltage levels, rather than 0 V or VCC.
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| SN74AHCT245PWE4 | 功能描述:总线收发器 Octal Bus Trnscvrs With 3-State Outputs RoHS:否 制造商:Fairchild Semiconductor 逻辑类型:CMOS 逻辑系列:74VCX 每芯片的通道数量:16 输入电平:CMOS 输出电平:CMOS 输出类型:3-State 高电平输出电流:- 24 mA 低电平输出电流:24 mA 传播延迟时间:6.2 ns 电源电压-最大:2.7 V, 3.6 V 电源电压-最小:1.65 V, 2.3 V 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-48 封装:Reel |
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