IDT72255LA20TF datasheet(5/27 Pages) IDT

Part #	IDT72255LA20TF

Description	CMOS SUPERSYNC FIFO

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Manufacturer	IDT [Integrated Device Technology]

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5

COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGE

IDT72255LA/72265LA SUPERSYNC FIFO™

8,192 x 18, 16,384 x 18

ABSOLUTE MAXIMUM RATINGS

Symbol

Rating

Com’l & Ind’l

Unit

VTERM

Terminal Voltage

–0.5 to +7.0

V

with respect to GND

TSTG

Storage

–55 to +125

°C

Temperature

IOUT

DC Output Current

–50 to +50

mA

NOTE:

1. Stresses greater than those listed under ABSOLUTE MAXIMUM RAT-

INGS may cause permanent damage to the device. This is a stress rating

only and functional operation of the device at these or any other conditions

above those indicated in the operational sections of this specification is

not implied. Exposure to absolute maximum rating conditions for ex-

tended periods may affect reliability.

NOTES:

1. With output deselected, (

OE ≥ VIH).

2. Characterized values, not currently tested.

DC ELECTRICAL CHARACTERISTICS

(Commercial: VCC = 5V

± 10%, TA = 0°C to +70°C; Industrial: VCC = 5V ± 10%, TA = –40°C to +85°C )

CAPACITANCE (TA = +25

°C, f = 1.0MHz)

Symbol

Parameter(1)

Conditions

Max.

Unit

CIN(2)

Input

VIN = 0V

10

pF

Capacitance

COUT(1,2)

Output

VOUT = 0V

10

pF

Capacitance

RECOMMENDED DC OPERATING CONDITIONS

Symbol

Parameter

Min.

Typ.

Max.

Unit

VCC

Supply Voltage

4.5

5.0

5.5

V

Commercial/Industrial

GND

Supply Voltage

0

V

VIH

Input High Voltage

2.0

—

V

Commercial/Industrial

VIL

(1)

Input Low Voltage

—

0.8

V

Commercial/Industrial

TA

Operating Temperature

0

—

70

°C

Commercial

TA

Operating Temperature

–40

—

85

°C

Industrial

NOTE:

1. 1.5V undershoots are allowed for 10ns once per cycle.

IDT72255LA

IDT72265LA

Commercial & Industrial(1)

tCLK = 10, 15, 20 ns

Symbol

Parameter

Min.

Max.

Unit

ILI(2)

Input Leakage Current

–1

1

µA

ILO(3)

Output Leakage Current

–10

10

µA

VOH

Output Logic “1” Voltage, IOH = –2 mA

2.4

—

V

VOL

Output Logic “0” Voltage, IOL = 8 mA

—

0.4

V

ICC1(4,5,6)

Active Power Supply Current

—

80

mA

ICC2(4,7)

Standby Current

—

20

mA

NOTES

:

1. Industrial temperature range product for 15ns and 20ns speed grades are available as a standard device.

2. Measurements with 0.4

≤ VIN ≤ VCC.

3.

OE ≥ VIH, 0.4 ≤ VOUT ≤ VCC.

4. Tested with outputs disabled (IOUT = 0).

5. RCLK and WCLK toggle at 20 MHz and data inputs switch at 10 MHz.

6. Typical ICC1 = 15 + 2.1*fS + 0.02*CL*fS (in mA) with VCC = 5V, tA = 25

°C, fS = WCLK frequency = RCLK frequency (in MHz, using TTL levels),

data switching at fS/2, CL = capacitive load (in pF).

7. All Inputs = VCC - 0.2V or GND + 0.2V, except RCLK and WCLK, which toggle at 20 MHz.

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