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參數(shù)資料
| 型號(hào)： | TMS46400DJ |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 1048576-WORD BY 4-BIT DYNAMIC RANDOM-ACCESS MEMORIES |
| 中文描述： | 1048576字4位動(dòng)態(tài)隨機(jī)存取記憶體 |
| 文件頁數(shù)： | 6/25頁 |
| 文件大小： | 657K |
| 代理商： | TMS46400DJ |
TMS44400, TMS44400P, TMS46400, TMS46400P
1048576-WORD BY 4-BIT
DYNAMIC RANDOM-ACCESS MEMORIES
SMHS562C – MAY 1995 – REVISED NOVEMBER 1996
6
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted)
PARAMETER
TEST
CONDITIONS
’44400-60
’44400P-60
’44400-70
’44400P-70
’44400-80
’44400P-80
UNIT
MIN
MAX
MIN
MAX
MIN
MAX
VOH
VOL
High-level output voltage
IOH = – 5 mA
IOL = 4.2 mA
VCC = 5.5 V,
VI = 0 V to 6.5 V,
All others = 0 V to VCC
VCC = 5.5 V,
CAS high
2.4
2.4
2.4
V
Low-level output voltage
0.4
0.4
0.4
V
II
Input current (leakage)
±
10
±
10
±
10
μ
A
IO
Output current (leakage)
VO = 0 V to VCC,
±
10
±
10
±
10
μ
A
ICC1
Read- or write-cycle current
(see Note 3)
VCC = 5.5 V,
Minimum cycle
105
90
80
mA
ICC2
Standby current
After one memory cycle,
RAS and CAS high,
VIH = 2.4 V (TTL)
After one memory
cycle, RAS and CAS
high,
VIH = VCC – 0.2 V
(CMOS)
2
2
2
mA
’44400
1
1
1
mA
’44400P
500
500
500
μ
A
ICC3
Average refresh current
(RAS only or CBR)
(see Note 4)
VCC = 5.5 V,
RAS cycling,
CAS high (RAS only);
RAS low after CAS low (CBR)
Minimum cycle,
105
90
80
mA
ICC4
Average page
current
(see Notes 3 and 5)
VCC = 5.5 V,
RAS low,
tPC = MIN,
CAS cycling
90
80
70
mA
ICC6
Self-refresh current
(see Note 3)
CAS
≤
0.2 V,
tRAS and tCAS > 1000 ms
RAS = VIH,
Data out = enabled
RAS < 0.2 V,
500
500
500
μ
A
ICC7
Standby current, outputs
enabled (see Note 3)
CAS = VIL,
5
5
5
mA
ICC10
Battery-backup current
(with CBR)
tRC = 125
μ
s,
VCC – 0.2 V
≤
VIH
≤
6.5 V,
0 V
≤
VIL
≤
0.2 V,
W and OE = VIH,
Address and data stable
tRAS
≤
1 ms,
500
500
500
μ
A
For TMS44400P only
NOTES:
3. ICC MAX is specified with no load connected.
4. Measured with a maximum of one address change while RAS = VIL
5. Measured with a maximum of one address change while CAS = VIH
A
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