IDT70T631S8BFI datasheet(8/27 Pages) IDT

Part #	IDT70T631S8BFI

Description	HIGH-SPEED 2.5V 512/256K x 18 ASYNCHRONOUS DUAL-PORT STATIC RAM WITH 3.3V 0R 2.5V INTERFACE

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Manufacturer	IDT [Integrated Device Technology]

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IDT70T633/1S

Preliminary

High-Speed 2.5V 512/256K x 18 Asynchronous Dual-Port Static RAM

Industrial and Commercial Temperature Ranges

8

RecommendedOperating

Temperature and Supply Voltage(1)

Recommended DC Operating

Conditions with VDDQ at 2.5V

Absolute Maximum Ratings(1)

NOTES:

1. VIL (min.) = -1.0V for pulse width less than tRC/2 or 5ns, whichever is less.

2. VIH (max.) = VDDQ + 1.0V for pulse width less than tRC/2 or 5ns, whichever is

less.

3. To select operation at 2.5V levels on the I/Os and controls of a given port, the

OPT pin for that port must be set to VSS (0V), and VDDQX for that port must be

supplied as indicated above.

NOTES:

1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS 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 extended periods may affect reliability.

2. This is a steady-state DC parameter that applies after the power supply has

reached its nominal operating value. Power sequencing is not necessary;

however, the voltage on any Input or I/O pin cannot exceed VDDQ during power

supply ramp up.

3. Ambient Temperature under DC Bias. No AC Conditions. Chip Deselected.

NOTE:

1. This is the parameter TA. This is the "instant on" case temperature.

Grade

Ambient

Temperature

GND

VDD

Commercial

0OC to +70OC0V

2.5V

+ 100mV

Industrial

-40OC to +85OC0V

2.5V

+ 100mV

5670 tbl 04

Symbol

Rating

Commercial

& Industrial

Unit

VTERM

(VDD)

VDD Terminal Voltage

with Respect to GND

-0.5 to 3.6

V

VTERM(2)

(VDDQ)

VDDQ Terminal Voltage

with Respect to GND

-0.3 to VDDQ + 0.3

V

VTERM(2)

(INPUTS and I/O's)

Input and I/O Terminal

Voltage with Respect to GND

-0.3 to VDDQ + 0.3

V

TBIAS(3)

Temperature

Under Bias

-55 to +125

o

C

TSTG

Storage

Temperature

-65 to +150

o

C

TJN

Junction Temperature

+150

o

C

IOUT(For VDDQ = 3.3V) DC Output Current

50

mA

IOUT(For VDDQ = 2.5V) DC Output Current

40

mA

5670 tbl 07

Symbol

Parameter

Min.

Typ.

Max.

Unit

VDD

Core Supply Voltage

2.4

2.5

2.6

V

VDDQ

I/O Supply Voltage(3)

2.4

2.5

2.6

V

VSS

Ground

0

V

VIH

Input High Volltage

(Address, Control &

Data I/O Inputs)(3)

1.7

____

VDDQ + 100mV(2)

V

VIH

Input High Voltage _

JTAG

1.7

____

VDD + 100mV(2)

V

VIH

Input High Voltage -

ZZ, OPT, M/S

VDD - 0.2V

____

VDD + 100mV(2)

V

VIL

Input Low Voltage

-0.3(1)

____

0.7

V

VIL

Input Low Voltage -

ZZ, OPT, M/S

-0.3(1)

____

0.2

V

5670 tbl 05

NOTES:

1. These parameters are determined by device characterization, but are not

production tested.

2. 3dV references the interpolated capacitance when the input and output switch

from 0V to 3V or from 3V to 0V.

3. COUT also references CI/O.

Capacitance(1)

(TA = +25°C, F = 1.0MHZ) TQFP ONLY

Symbol

Parameter

Conditions(2)

Max.

Unit

CIN

Input Capacitance

VIN = 3dV

8

pF

COUT(3)

Output Capacitance

VOUT = 3dV

10.5

pF

5670 tbl 08

Recommended DC Operating

Conditions with VDDQ at 3.3V

NOTES:

1. VIL (min.) = -1.0V for pulse width less than tRC/2 or 5ns, whichever is less.

2. VIH (max.) = VDDQ + 1.0V for pulse width less than tRC/2 or 5ns, whichever is

less.

3. To select operation at 3.3V levels on the I/Os and controls of a given port, the

OPT pin for that port must be set to VDD (2.5V), and VDDQX for that port must be

supplied as indicated above.

Symbol

Parameter

Min.

Typ.

Max.

Unit

VDD

Core Supply Voltage

2.4

2.5

2.6

V

VDDQ

I/O Supply Voltage(3)

3.15

3.3

3.45

V

VSS

Ground

0

V

VIH

Input High Voltage

(Address, Control

&Data I/O Inputs)(3)

2.0

____

VDDQ + 150mV(2)

V

VIH

Input High Voltage _

JTAG

1.7

____

VDD + 100mV(2)

V

VIH

Input High Voltage -

ZZ, OPT, M/S

VDD - 0.2V

____

VDD + 100mV(2)

V

VIL

Input Low Voltage

-0.3(1)

____

0.8

V

VIL

Input Low Voltage -

ZZ, OPT, M/S

-0.3(1)

____

0.2

V

5670 tbl 06

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