IDT71256 View Datasheet(PDF) - Integrated Device Technology
Part Name
Description
Manufacturer
IDT71256
Integrated Device Technology
IDT71256 Datasheet PDF : 9 Pages
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IDT71256S/L
CMOS STATIC RAM 256K (32K x 8-BIT)
MILITARY AND COMMERCIAL TEMPERATURE RANGES
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
0V
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.
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
CS ≤ VIL, Outputs Open
VCC = Max., f = fMAX(2)
S
—
—
— 150 — 145
— 140 mA
L 135 — 115 130 — 125 105 120
ISB
Standby Power Supply
Current (TTL Level)
CS ≥ VIH, VCC = Max.,
Outputs Open, f = fMAX(2)
S
—
—
—
20
—
20
—
20 mA
L
3
—
3
3
—
3
3
3
ISB1
Full Standby Power Supply
Current (CMOS Level)
CS ≥ VHC, VCC = Max., f = 0
S
—
—
—
20
—
20
—
20 mA
L
0.4 — 0.4 1.5 — 1.5
0.4 1.5
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
Current (TTL Level)
CS ≥ VIH, VCC = Max.,
Outputs Open, f = fMAX(2)
S
— 20 — 20
—
20 — 20 — 20 mA
L
33— 3
—
3
—
3
—
3
ISB1
Full Standby Power Supply
S
Current (CMOS Level)
CS ≥ VHC, VCC = Max., f = 0
L
— 20 — 20
—
0.4 1.5 — 1.5 —
NOTES:
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.
20 — 20 — 20 mA
1.5 — 1.5 — 1.5
2946 tbl 07
7.2
3
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