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부품번호 | DM74AS245 기능 |
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기능 | Octal Bus Transceiver with 3-STATE Outputs | ||
제조업체 | Fairchild Semiconductor | ||
로고 | |||
전체 5 페이지수
October 1986
Revised February 2000
DM74AS245
Octal Bus Transceiver with 3-STATE Outputs
General Description
This advanced Schottky device contains 8 pairs of
3-STATE logic elements configured as octal bus transceiv-
ers. These circuits are designed for use in memory, micro-
processor systems and in asynchronous bidirectional data
buses. Two way communication between buses is con-
trolled by the (DIR) input. Data transmits either from the A
bus to the B bus or from the B bus to the A bus. Both the
driver and receiver outputs can be disabled via the (G)
enable input which causes outputs to enter the high imped-
ance mode so that the buses are effectively isolated.
Features
s Advanced oxide-isolated, ion-implanted Schottky
TTL process
s Non-inverting logic output
s 3-STATE outputs independently controlled on
A and B buses
s Low output impedance to drive terminated transmission
lines to 133Ω
s Switching response specified into 500Ω/50 pF
s Specified to interface with CMOS at VOH = VCC − 2V
s PNP inputs reduce input loading
s Switching specifications guaranteed over full
temperature and VCC range
Ordering Code:
Order Number Package Number
Package Description
DM74AS245WM
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
DM74AS245SJ
M20D
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
DM74AS245N
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 Diagram
Function Table
Control
Inputs
G DIR
LL
LH
HX
Operation
B Data to A Bus
A Data to B Bus
Hi-Z
© 2000 Fairchild Semiconductor Corporation DS006299
www.fairchildsemi.com
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
Package Number M20D
www.fairchildsemi.com
4
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구 성 | 총 5 페이지수 | ||
다운로드 | [ DM74AS245.PDF 데이터시트 ] |
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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 |