參數(shù)資料
型號： MM74HCT244N
廠商： Fairchild Semiconductor
文件頁數(shù)： 1/8頁
文件大?。?/td> 0K
描述： IC BUFF/DVR TRI-ST DUAL 20DIP
標準包裝： 18
系列： 74HCT
邏輯類型： 緩沖器/線路驅(qū)動器，非反相
元件數(shù)： 2
每個元件的位元數(shù)： 4
輸出電流高，低： 7.2mA，7.2mA
電源電壓： 4.5 V ~ 5.5 V
工作溫度： -40°C ~ 85°C
安裝類型： 通孔
封裝/外殼： 20-DIP（0.300"，7.62mm）
供應商設備封裝： 20-DIP
包裝： 管件
2005 Fairchild Semiconductor Corporation
DS005365
www.fairchildsemi.com
February 1984
Revised May 2005
MM74HCT240
MM74HCT244
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MM74HCT240 MM74HCT244
Inverting Octal 3-STATE Buffer Octal 3-STATE Buffer
General Description
The MM74HCT240 and MM74HCT244 3-STATE buffers
utilize advanced silicon-gate CMOS technology and are
general purpose high speed inverting and non-inverting
buffers. They possess high drive current outputs which
enable high speed operation even when driving large bus
capacitances. These circuits achieve speeds comparable
to low power Schottky devices, while retaining the low
power consumption of CMOS. All three devices are TTL
input compatible and have a fanout of 15 LS-TTL equiva-
lent inputs.
MM74HCT devices are intended to interface between TTL
and NMOS components and standard CMOS devices.
These parts are also plug-in replacements for LS-TTL
devices and can be used to reduce power consumption in
existing designs.
The
MM74HCT240
is
an
inverting
buffer
and
the
MM74HCT244 is a non-inverting buffer. Each device has
two active low enables (1G and 2G), and each enable inde-
pendently controls 4 buffers.
All inputs are protected from damage due to static dis-
charge by diodes to VCC and Ground.
Features
s TTL input compatible
s Typical propagation delay: 14 ns
s 3-STATE outputs for connection to system buses
s Low quiescent current: 80
PA
s High output drive current: 6 mA (min)
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagrams
Pin Assignments for DIP, SOIC, SOP and TSSOP
Top View
MM74HCT240
Top View
MM74HCT244
Order Number
Package Number
Package Description
MM74HCT240WM
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
MM74HCT240SJ
M20D
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
MM74HCT240MTC
MTC20
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
MM74HCT240N
N20A
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
MM74HCT244WM
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
MM74HCT244SJ
M20D
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
MM74HCT244MTC
MTC20
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
MM74HCT244N
N20A
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MM74HCT244N 制造商:Fairchild Semiconductor Corporation 功能描述:IC BUFFERS/DRIVERS/RECEIVERS LOGIC ROHS
MM74HCT244N 制造商:Fairchild Semiconductor Corporation 功能描述:74HCT CMOS 74HCT244 DIP20 5.5V
MM74HCT244N_Q 功能描述:緩沖器和線路驅(qū)動器 Octal 3-STATE Buffer RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel
MM74HCT244SJ 功能描述:緩沖器和線路驅(qū)動器 Octal 3-STATE Buffer RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel
MM74HCT244SJX 功能描述:緩沖器和線路驅(qū)動器 Octal 3-STATE Buffer RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel
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