參數(shù)資料
型號(hào): HYB514256B-70
廠商: SIEMENS A G
元件分類: DRAM
英文描述: 256 K x 4-Bit Dynamic RAM Low Power 256 K x 4-Bit Dynamic RAM
中文描述: 256K X 4 FAST PAGE DRAM, 70 ns, PDIP20
文件頁數(shù): 9/22頁
文件大?。?/td> 215K
代理商: HYB514256B-70
Semiconductor Group
63
HYB 514256B/BL/BJ/BJL-50/-60/-70
256 K
×
4-DRAM
CAS precharge time (CAS-
before-RAS counter test
cycle)
t
CPT
25
30
40
ns
OE access time
t
OEA
t
ROH
15
15
20
ns
RAS hold time referenced to
OE
10
10
10
ns
Output buffer turn-off delay
time from OE
Data to CAS low delay
14)
CAS high to data delay
15)
OE high to data delay
15)
OE to data delay
15)
t
OEZ
0
15
0
20
0
20
ns
t
DZC
t
DZO
t
CDD
t
ODD
0
0
0
ns
0
0
0
15
20
20
ns
15
20
20
ns
Capacitance
T
A
= 0 to 70 C;
V
CC
= 5 V
±
10 %;
f
= 1 MHz
Parameter
Symbol
Limit Values
Unit
min.
max.
Input capacitance (A0 to A8)
C
I1
C
I2
C
5O
5
pF
Input capacitance (RAS, CAS, WE, OE)
7
pF
Output capacitance (I/O1 ... I/O4)
7
pF
AC Characteristics
(cont’d)
4) 13)
T
A
= 0 to 70 C;
V
CC
= 5 V
±
10 %;
t
T
= 5 ns
Parameter
Symbol
Limit Values
Unit
-50
-60
-70
min.
max.
min.
max.
min.
max.
相關(guān)PDF資料
PDF描述
HYB514256B 256 K x 4-Bit Dynamic RAM Low Power 256 K x 4-Bit Dynamic RAM
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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HYB514256BJ-50 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:256 K x 4-Bit Dynamic RAM Low Power 256 K x 4-Bit Dynamic RAM
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HYB514256BJ-70 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:256 K x 4-Bit Dynamic RAM Low Power 256 K x 4-Bit Dynamic RAM
HYB514256BJ-80 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x4 Fast Page Mode DRAM