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IDT71256S Datasheet(PDF) 3 Page - Integrated Device Technology

Part No. IDT71256S
Description  CMOS STATIC RAM 256K (32K x 8-BIT)
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Maker  IDT [Integrated Device Technology]
Homepage  http://www.idt.com
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 3 page
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7.2
3
IDT71256S/L
CMOS STATIC RAM 256K (32K x 8-BIT)
MILITARY AND COMMERCIAL TEMPERATURE RANGES
DC ELECTRICAL CHARACTERISTICS
(1, 2)
(VCC = 5.0V
± 10%, VLC = 0.2V, VHC = VCC - 0.2V)
71256S/L20
71256S/L25
71256S/L30
71256S/L35
Symbol
Parameter
Power Com’l.
Mil.
Com’l.
Mil.
Com’l.
Mil.
Com’l.
Mil.
Unit
ICC
Dynamic Operating Current
S
150
145
140
mA
CS ≤ VIL, Outputs Open
VCC = Max., f = fMAX
(2)
L
135
115
130
125
105
120
ISB
Standby Power Supply
S
20
20
20
mA
Current (TTL Level)
CS ≥ VIH, VCC = Max.,
L
3
3
3
3
3
3
Outputs Open, f = fMAX
(2)
ISB1
Full Standby Power Supply
S
20
20
20
mA
Current (CMOS Level)
CS ≥ VHC, VCC = Max., f = 0
L
0.4
0.4
1.5
1.5
0.4
1.5
RECOMMENDED OPERATING
TEMPERATURE AND SUPPLY VOLTAGE
Grade
Temperature
GND
VCC
Military
–55
°C to +125°C
0V
5.0V
± 10%
Commercial
0
°C to +70°C
0V
5.0V
± 10%
2946 tbl 05
RECOMMENDED DC OPERATING
CONDITIONS
Symbol
Parameter
Min.
Typ.
Max. Unit
VCC
Supply Voltage
4.5
5.0
5.5
V
GND
Supply Voltage
0
0
0
V
VIH
Input High Voltage
2.2
6.0
V
VIL
Input Low Voltage
–0.5
(1)
0.8
V
NOTE:
2946 tbl 06
1. VIL (min.) = –3.0V for pulse width less than 20ns, once per cycle.
NOTES:
2946 tbl 07
1. All values are maximum guaranteed values.
2. fMAX = 1/tRC, all address inputs cycling at fMAX; f = 0 means no address pins are cycling.
3. Also available: 120 and 150 ns military devices.
71256S/L45
71256S/L55
71256S/L70
71256S/L85
(3) 71256S/L100(3)
Symbol
Parameter
Power
Com’l. Mil.
Com’l.
Mil.
Com’l.
Mil.
Com’l.
Mil.
Com'l.
Mil.
Unit
ICC
Dynamic Operating Current
S
135
135
135
135
135
mA
CS ≤ VIL, Outputs Open
VCC = Max., f = fMAX
(2)
L
100
115
115
115
115
115
ISB
Standby Power Supply
S
20
20
20
20
20
mA
Current (TTL Level)
CS ≥ VIH, VCC = Max.,
L
3
3
3
3
3
3
Outputs Open, f = fMAX
(2)
ISB1
Full Standby Power Supply
S
20
20
20
20
20
mA
Current (CMOS Level)
CS ≥ VHC, VCC = Max., f = 0
L
0.4
1.5
1.5
1.5
1.5
1.5




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