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参数资料
| 型号： | M74HCT244PUB1R |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 总线收发器 |
| 英文描述： | HCT SERIES, DUAL 4-BIT DRIVER, TRUE OUTPUT, PDIP20 |
| 封装： | PLASTIC, DIP-20 |
| 文件页数： | 1/10页 |
| 文件大小： | 247K |
| 代理商： | M74HCT244PUB1R |
M54HCT240/241/244PU
M74HCT240/241/244PU
J
1994
OCTAL BUS BUFFERS WITH PULL-UP INPUT NETWORK
B1R
(Plastic Package)
ORDER CODES :
M54HCTXXXPUF1R
M74HCTXXXPUM1R
M74HCTXXXPUB1R
F1R
(Ceramic Package)
M1R
(Micro Package)
PIN CONNECTION (top view)
.
HIGH SPEED
tPD = 14 ns (TYP.) at VCC =5V
.
LOW POWER DISSIPATION
ICCH = 200
A (TYP.) at TA =25 oC
.
COMPATIBLE WITH TTL OUTPUTS
VIH = 2V (MIN.) VIL = 0.8V (MAX)
.
CURRENT SOURCES ON DATA INPUTS
ELIMINATE THE NEED OF EXTERNAL PULL-
UP RESISTORS
.
OUTPUT DRIVE CAPABILITY
15 LSTTL LOADS
.
SYMMETRICAL OUTPUT IMPEDANCE
|IOH|= IOL = 6 mA (MIN)
.
BALANCED PROPAGATION DELAYS
tPLH =tPHL
.
PIN AND FUNCTION COMPATIBLE
WITH 54/74LS240/241/244
DESCRIPTION
The
M54/74HCT240PU,
HCT241PU
and
HCT244PU are high speed CMOS OCTAL BUS
BUFFERs fabricated
in silicon gate C
2MOS
technology.
They have the same high speed performance of their
non-PU counterpart, plus a unique input topology
which incorporates a constant current source for
each data input. This results is in a small IIL (-150
A
Typ.) wich can fix any data input in the HIGH Logic
Level when it is left floating, thus eliminating the need
of external pull-up resistor network.
This feature makes these devices particularly
suitable in all applications where a data bus needs to
be interfaced to manual controls like: rotary selectors,
keyboards,
dip-switches, etc. The inputs are
compatible with TTL, NMOS and CMOS output
voltage levels. They achieve the high speed
operation
similar
to
equivalent
LSTTL while
maintaining the CMOS low power dissipation.
All inputs are equipped with protection circuits
against static discharge and transient excess
voltage.
HCT244PU
HCT241PU
HCT240PU
1/10
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PDF描述 |
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| M54HCT244PUF1R | HCT SERIES, DUAL 4-BIT DRIVER, TRUE OUTPUT, CDIP20 |
| M54HCT257F1R | HCT SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, CDIP16 |
| M74HCT257C1R | HCT SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PQCC20 |
| M54HCT368F1R | HCT SERIES, 6-BIT DRIVER, INVERTED OUTPUT, CDIP16 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| M74HCT244RM13TR | 功能描述:缓冲器和线路驱动器 Octal Bus Buffer 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 |
| M74HCT244TTR | 功能描述:缓冲器和线路驱动器 Octal Bus Buffer 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 |
| M74HCT245B1R | 功能描述:总线收发器 Octal Bus Transceivr 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 |
| M74HCT245M1R | 功能描述:总线收发器 Octal Bus Transceivr 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 |
| M74HCT245N | 制造商:n/a 功能描述:74HCT245 |
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