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參數(shù)資料
| 型號(hào)： | 74ACT257M |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 8-Bit TTL/BTL Registered Transceiver 52-QFP 0 to 70 |
| 中文描述： | 四2通道多路復(fù)用三態(tài) |
| 文件頁(yè)數(shù)： | 1/10頁(yè) |
| 文件大?。?/td> | 87K |
| 代理商： | 74ACT257M |
74ACT257
QUAD 2 CHANNEL MULTIPLEXER (3-STATE)
April 1997
I
HIGHSPEED: t
PD
=5ns(TYP.) at V
CC
= 5V
I
LOWPOWER DISSIPATION:
I
CC
=8
μ
A (MAX.) at T
A
=25
o
C
I
COMPATIBLEWITH TTL OUTPUTS
V
IH
= 2V(MIN), V
IL
= 0.8V(MAX)
I
50
TRANSMISSIONLINEDRIVING
CAPABILITY
I
SYMMETRICALOUTPUT IMPEDANCE:
|I
OH
| = I
OL
= 24mA (MIN)
I
BALANCEDPROPAGATIONDELAYS:
t
PLH
t
PHL
I
OPERATINGVOLTAGERANGE:
V
CC
(OPR)= 4.5Vto 5.5V
I
PIN AND FUNCTION COMPATIBLEWITH
74 SERIES257
I
IMPROVEDLATCH-UP IMMUNITY
DESCRIPTION
The ACT257 is an advanced high-speed CMOS
QUAD 2 CHANNEL MULTIPLEXER (3-STATE)
fabricated with sub-micron silicon gate and
double-layermetal wiring C
2
MOS technology.
It is ideal for low power applications mantaining
high speed operationsimilar to equivalentBipolar
SchottkyTTL.
These IC’s are composed of an independent 2
channel multiplexer with common SELECT and
ENABLEINPUT.
The AC257 is a noninverting multiplexer.
When the ENABLE INPUT is held ”High” outputs
of both IC’s become high impedance state. If
SELECT INPUT is held ”Low”, ”A” data is
selected, when SELECT INPUT is ”High”, ”B”
datais closen.
The device is designed to interface directly High
Speed CMOS systems with TTL, NMOS and
CMOS output voltagelevels.
All
inputs and
outputs
protectioncircuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
are
equipped with
PINCONNECTION AND IEC LOGICSYMBOLS
ORDER CODES :
74ACT257B
74ACT257M
M
(Micro Package)
B
(Plastic Package)
1/10
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 74ACT257MTC | 8-Bit TTL/BTL Registered Transceiver 52-QFP 0 to 70 |
| 74ACT257PC | 8-Bit TTL/BTL Registered Transceiver 52-QFP 0 to 70 |
| 74ACT257SC | 8-Bit TTL/BTL Transceivers 52-QFP 0 to 70 |
| 74ACT257SJ | 8-Bit TTL/BTL Transceivers 52-QFP 0 to 70 |
| 74ACT257MTCX | 2-Input Digital Multiplexer |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74ACT257MTC | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 Qd 2-Inp Multiplexer RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時(shí)間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| 74ACT257MTC_Q | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 Qd 2-Inp Multiplexer RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時(shí)間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| 74ACT257MTCX | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 Qd 2-Inp Multiplexer RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時(shí)間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| 74ACT257MTR | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 Quad 2-Ch Multiplexr RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時(shí)間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| 74ACT257PC | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 Qd 2-Inp Multiplexer RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時(shí)間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
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