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부품번호 | DM74AS240 기능 |
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기능 | 3-STATE Bus Driver/Receiver | ||
제조업체 | Fairchild Semiconductor | ||
로고 | |||
전체 5 페이지수
October 1986
Revised March 2000
DM74AS240 • DM74AS244
3-STATE Bus Driver/Receiver
General Description
This family of Advance Schottky 3-STATE Bus circuits are
designed to provide either bidirectional or unidirectional
buffer interface in Memory, Microprocessor, and Communi-
cation Systems. The output characteristics of the circuits
have low impedance sufficient to drive terminated trans-
mission lines down to 133Ω. The input characteristics of
the circuits likewise have a high impedance so it will not
significantly load the transmission line. The package con-
tains eight 3-STATE buffers organized with four buffers
having a common 3-STATE enable gate. The DM74AS240
and DM74AS244 are eight wide in a 20 pin package, and
may be used as a 4 wide bidirectional or eight wide unidi-
rectional. The buffer selection includes inverting and non-
inverting, with enable or disable 3-STATE control.
Features
s Advanced oxide-isolated, ion-implanted Schottky TTL
process
s Improved switching performance with less power dissi-
pation compared with Schottky counterpart
s Functional and pin compatible with 74LS and Schottky
counterpart
s Switching response specified into 500Ω and 50 pF
s Specified to interface with CMOS at VOH = VCC − 2V
Ordering Code:
Order Number Package Number
Package Description
DM74AS240WM
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
DM74AS240N
N20A
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
DM74AS244WM
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
DM74AS244N
N20A
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagrams
DM74AS240
DM74AS244
Function Tables
DM74AS240
Inputs
GA
LL
LH
HX
L = LOW Logic Level
Output
Y
H
L
Z
H = HIGH Logic Level
DM74AS244
Inputs
Output
GA
LL
LH
HX
Y
L
H
Z
X = Either LOW or HIGH Logic Level Z = High Impedance
© 2000 Fairchild Semiconductor Corporation DS006298
www.fairchildsemi.com
Physical Dimensions inches (millimeters) unless otherwise noted
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
Package Number M20B
www.fairchildsemi.com
4
4페이지 | |||
구 성 | 총 5 페이지수 | ||
다운로드 | [ DM74AS240.PDF 데이터시트 ] |
당사 플랫폼은 키워드, 제품 이름 또는 부품 번호를 사용하여 검색할 수 있는 |
구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
DM74AS240 | 3-STATE Bus Driver/Receiver | Fairchild Semiconductor |
DM74AS240 | (DM74AS240 - DM74AS244) Bus Driver / Receiver | National Semiconductor |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |