參數(shù)資料
型號: 74F189A
廠商: NXP Semiconductors N.V.
英文描述: 64-bit TTL bipolar RAM, inverting(3-State)(64位TTL雙極性RAM,反向(三態(tài)))
中文描述: 64位TTL雙極內存,反相(3態(tài))(64位的TTL雙極性內存,反向(三態(tài)))
文件頁數(shù): 6/10頁
文件大小: 81K
代理商: 74F189A
Philips Semiconductors
Product specification
74F189A
64-bit TTL bipolar RAM, inverting (3-State)
1990 Feb 23
6
V
M
V
M
Qn
CE
t
PZH
t
PZL
NOTE:
For all waveforms, V
M
= 1.5V.
SF00304
Waveform 2. Read cycle, chip enable access time
V
M
V
M
Qn
CE
t
PHZ
t
PLZ
NOTE:
For all waveforms, V
M
= 1.5V.
SF00305
Waveform 3. Read cycle, chip disable time
AC WAVEFORMS FOR WRITE CYCLE
V
M
V
M
An
t
su
(H or L)
t
PZH
V
M
Qn
t
PHZ
t
PLZ
V
M
V
M
Dn
V
M
CE
V
M
V
M
V
M
WE
t
h
(H or L)
V
M
t
h
(H or L)
t
su
( L)
t
su
(H or L)
t
h
( L)
t
w
( L)
V
M
Hi–Z
t
PZL
NOTE:
For all waveforms, V
M
= 1.5V.
SF00306
Waveform 4. Write cycle
相關PDF資料
PDF描述
74F189 64-bit TTL bipolar RAM, inverting 3-State
74F189PC 64-Bit Random Access Memory with TRI-STATEE Outputs
74F189SC 64-Bit Random Access Memory with TRI-STATEE Outputs
74F189SJ 64-Bit Random Access Memory with TRI-STATEE Outputs
74F189 64-Bit Random Access Memory with 3-STATE Outputs
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