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參數(shù)資料
| 型號： | 74F189 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | 64-Bit Random Access Memory with TRI-STATE Outputs(帶三態(tài)輸出的64位RAM) |
| 中文描述： | 64位隨機存取存儲器具有三態(tài)輸出（帶三態(tài)輸出的64位內(nèi)存） |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 166K |
| 代理商： | 74F189 |
TL/F/9493
5
August 1995
54F/74F189 64-Bit Random Access
Memory with TRI-STATE
é
Outputs
General Description
The ’F189 is a high-speed 64-bit RAM organized as a 16-
word by 4-bit array. Address inputs are buffered to minimize
loading and are fully decoded on-chip. The outputs are TRI-
STATE and are in the high impedance state whenever the
Chip Select (CS) input is HIGH. The outputs are active only
in the Read mode and the output data is the complement of
the stored data.
Features
Y
TRI-STATE outputs for data bus applications
Y
Buffered inputs minimize loading
Y
Address decoding on-chip
Y
Diode clamped inputs minimize ringing
Y
Available in SOIC, (300 mil only)
Commercial
Military
Package
Number
Package Description
74F189PC
N16E
16-Lead (0.300
×
Wide) Molded Dual-In-Line
54F189DL (Note 2)
J16A
16-Lead Ceramic Dual-In-Line
74F189SC (Note 1)
M16A
16-Lead (0.150
×
Wide) Molded Small Outline, JEDEC
16-Lead (0.300
×
Wide) Molded Small Outline, EIAJ
74F189SJ (Note 1)
M16D
54F189FL (Note 2)
W16A
16-Lead Cerpack
54F189LL (Note 2)
E20A
20-Lead Ceramic Leadless Chip Carrier, Type C
Note 1:
Devices also available in 13
×
reel. Use suffix
e
SCX and SJX.
Note 2:
Military grade device with environmental and burn-in processing. Use suffix
e
DLQB, FLQB and LLQB.
Logic Symbols
Connection Diagrams
TL/F/9493–1
IEEE/IEC
TL/F/9493–4
Pin Assignment
for DIP, SOIC and Flatpak
TL/F/9493–2
Pin Assignment
for LCC
TL/F/9493–3
TRI-STATE
é
is a registered trademark of National Semiconductor Corporation.
C
1995 National Semiconductor Corporation
RRD-B30M105/Printed in U. S. A.
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| 74F190 | Up/Down Decade Counter with Preset and Ripple Clock(帶可預置和脈動時鐘的可逆十進制計數(shù)器) |
| 74F190PC | Up/Down Decade Counter with Preset and Ripple Clock |
| 74F190SC | Up/Down Decade Counter with Preset and Ripple Clock |
| 74F190 | Up/Down Decade Counter with Preset and Ripple Clock |
| 74F190SCX | Synchronous Up/Down Counter |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| 74F189A | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:64-bit TTL bipolar RAM, inverting 3-State |
| 74F189DC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x4 SRAM |
| 74F189PC | 功能描述:RAM其它 64-Bit Ran Acces Mem RoHS:否 制造商:Freescale Semiconductor 封裝:Tray |
| 74F189SC | 功能描述:RAM其它 64-Bit Ran Acces Mem RoHS:否 制造商:Freescale Semiconductor 封裝:Tray |
| 74F189SCX | 功能描述:RAM其它 64-Bit Ran Acces Mem RoHS:否 制造商:Freescale Semiconductor 封裝:Tray |
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