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PDF ( 数据手册 , 数据表 ) 74189

零件编号 74189
描述 64-Bit Random Access Memory
制造商 Fairchild Semiconductor
LOGO Fairchild Semiconductor LOGO 


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74189 数据手册, 描述, 功能
April 1988
Revised June 2002
74F189
64-Bit Random Access Memory with 3-STATE 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 mini-
mize loading and are fully decoded on-chip. The outputs
are 3-STATE and are in the high impedance state when-
ever 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
s 3-STATE outputs for data bus applications
s Buffered inputs minimize loading
s Address decoding on-chip
s Diode clamped inputs minimize ringing
Ordering Code:
Order Number Package Number
Package Description
74F189SC
M16B
16-Lead Small Outline Intergrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
74F189SJ
M16D
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74F189PC
(Note 1)
N16E
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
Devices also available in Tape and Reel. Specify by appending suffix “X” to the ordering code.
Note 1: This device not available in Tape and Reel.
Logic Symbols
Connection Diagram
IEEE/IEC
© 2002 Fairchild Semiconductor Corporation DS009493
www.fairchildsemi.com












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