DSC-2679/9

SEPTEMBER 2002

CMOS ASYNCHRONOUS FIFO

256 x 9, 512 x 9 and 1,024 x 9

IDT7200L

IDT7201LA
IDT7202LA

IDT and the IDT logo are registered trademarks of Integrated Device Technology, Inc.

COMMERCIAL, INDUSTRIAL AND MILITARY TEMPERATURE RANGES

FEATURES:

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First-In/First-Out dual-port memory

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256 x 9 organization (IDT7200)

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512 x 9 organization (IDT7201)

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1,024 x 9 organization (IDT7202)

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Low power consumption
-- Active: 440mW (max.)
--Power-down: 28mW (max.)

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Ultra high speed--12ns access time

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Asynchronous and simultaneous read and write

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Fully expandable by both word depth and/or bit width

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Pin and functionally compatible with 720X family

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Status Flags: Empty, Half-Full, Full

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Auto-retransmit capability

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High-performance CEMOSTM technology

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Military product compliant to MIL-STD-883, Class B

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Standard Military Drawing #5962-87531, 5962-89666, 5962-89863
and 5962-89536 are listed on this function

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Dual versions available in the TSSOP package. For more informa-
tion, see IDT7280/7281/7282 data sheet

IDT7280 = 2 x IDT7200
IDT7281 = 2 x IDT7201
IDT7282 = 2 x IDT7202

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Industrial temperature range (40

C to +85

C) is available

(plastic packages only)

DESCRIPTION:

The IDT7200/7201/7202 are dual-port memories that load and empty data

on a first-in/first-out basis. The devices use Full and Empty flags to prevent data
overflow and underflow and expansion logic to allow for unlimited expansion
capability in both word size and depth.

The reads and writes are internally sequential through the use of ring

pointers, with no address information required to load and unload data. Data
is toggled in and out of the devices through the use of the Write (

W) and Read

(

R) pins.

The devices utilize a 9-bit wide data array to allow for control and parity bits

at the user's option. This feature is especially useful in data communications
applications where it is necessary to use a parity bit for transmission/reception
error checking. It also features a Retransmit (

RT) capability that allows for reset

of the read pointer to its initial position when

RT is pulsed LOW to allow for

retransmission from the beginning of data. A Half-Full Flag is available in the
single device mode and width expansion modes.

These FIFOs are fabricated using IDT's high-speed CMOS technology.

They are designed for those applications requiring asynchronous and
simultaneous read/writes in multiprocessing and rate buffer applications.
Military grade product is manufactured in compliance with the latest revision of
MIL-STD-883, Class B.

FUNCTIONAL BLOCK DIAGRAM

WRITE

CONTROL

READ

CONTROL

FLAG

LOGIC

EXPANSION

LOGIC

WRITE

POINTER

RAM

ARRAY

256 x 9
512 x 9

1,024 x 9

READ

POINTER

DATA INPUTS

RESET

LOGIC

THREE-
STATE
BUFFERS

DATA OUTPUTS

XO/HF

FL/RT

-D

)

2679 drw 01

-Q

)

COMMERCIAL, INDUSTRIAL AND MILITARY

TEMPERATURE RANGES

IDT7201L/7201LA/7202LA CMOS ASYNCHRONOUS FIFO
256 x 9, 512 x 9 and 1,024 x 9

PIN CONFIGURATIONS

RECOMMENDED DC OPERATING
CONDITIONS

Symbol

Parameter

Min.

Typ.

Max. Unit

Supply Voltage

4.5

5.0

5.5

Commercial/Industrial/Military

GND

Supply Voltage

(1)

Input High Voltage Com'l/Ind'l

2.0

(1)

Input High Voltage Military

2.2

(2)

Input Low Voltage

0.8

Commercial/Industrial/Military

Operating Temperature Commercial

°C

Operating Temperature Industrial

°C

Operating Temperature Military

125

°C

NOTES:
1. For

RT/RS/XI input, V

= 2.6V (commercial).

For

RT/RS/XI input, V

= 2.8V (military).

2. 1.5V undershoots are allowed for 10ns once per cycle.

ABSOLUTE MAXIMUM RATINGS

Symbol

Rating

Com'l & Ind'l

Mil.

Unit

TERM

Terminal Voltage

0.5 to +7.0

with Respect
to GND

STG

Storage

55 to +125

65 to +155

°C

Temperature

OUT

DC Output

50 to +50

Current

NOTE:
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.

Reference

Order

Package Type

Identifier

Code

PLASTIC DIP

(1)

P28-1

PLASTIC THIN DIP

P28-2

T P

CERDIP

(1)

D28-1

THIN CERDIP

D28-3

SOIC

SO28-3

TOP VIEW

Reference

Order

Package Type

Identifier

Code

LCC

(1)

L32- 1

PLCC

J32-1

TOP VIEW

NOTE:
1. The 600-mil-wide DIP (P28-1 and D28-1) and LCC are not available for the IDT7200.

FL/RT

XO/HF

GND

2679 drw 02a

NC
FL/RT
RS
EF
XO/HF
Q

32 31 30

14 15 16 17 18 19 20

GND

INDEX

2679 drw 02b

COMMERCIAL, INDUSTRIAL AND MILITARY

TEMPERATURE RANGES

IDT7201L/7201LA/7202LA CMOS ASYNCHRONOUS FIFO
256 x 9, 512 x 9 and 1,024 x 9

DC ELECTRICAL CHARACTERISTICS

(Commercial: V

= 5V ± 10%, T

= 0

C to +70

C; Industrial: V

= 5V ± 10%, T

= 40

C to +85

C; Military: V

= 5V ± 10%, T

= 55

C to +125

IDT7200L

IDT7201LA

IDT7202LA

Com'l & Ind'l

(1)

Military

(2)

= 12, 15, 20, 25, 35, 50 ns

= 20, 30, 50, 80 ns

Symbol

Parameter

Min.

Max.

Min.

Max.

Unit

(3)

Input Leakage Current (Any Input)

µ A

(4)

Output Leakage Current

µ A

Output Logic "1" Voltage I

= 2mA

2.4

Output Logic "0" Voltage I

= 8mA

0.4

CC1

(5,6,7)

Active Power Supply Current

100

CC2

(5,8)

Standby Current (

R=W=RS=FL/RT=V

)

NOTES:
1. Industrial temperature range product for the 15ns and 25 ns speed grades are available as a standard device.
2. Military speed grades of 50ns and 80ns are only available for the IDT7201LA.
3. Measurements with 0.4

, 0.4

OUT

5. Tested with outputs open (I

OUT

= 0).

6. Tested at f = 20 MHz.

7. Typical I

CC1

= 15 + 2*f

+ 0.02*C

(in mA) with V

= 5V, T

= 25

C, f

= WCLK frequency = RCLK frequency (in MHz, using TTL levels), data switching at f

/2, C

= capacitive

load (in pF).

8. All Inputs = V

- 0.2V or GND + 0.2V.

AC TEST CONDITIONS

Input Pulse Levels

GND to 3.0V

Input Rise/Fall Times

5ns

Input Timing Reference Levels

1.5V

Output Reference Levels

1.5V

Output Load

See Figure 1

Symbol

Parameter

Condition

Max.

Unit

Input Capacitance

= 0V

OUT

Output Capacitance

OUT

= 0V

NOTE:
1. Characterized values, not currently tested.

CAPACITANCE

= +25

°C, f = 1.0 MHz)

or equivalent circuit

2679 drw 03

30pF*

1.1K

OUTPUT

680

Figure 1. Output Load

* Includes scope and jig capacitances.

COMMERCIAL, INDUSTRIAL AND MILITARY

TEMPERATURE RANGES

IDT7201L/7201LA/7202LA CMOS ASYNCHRONOUS FIFO
256 x 9, 512 x 9 and 1,024 x 9

Commercial

Com'l & Ind'l

(2)

Com'l & Mil.

Com'l & Ind'l

(2)

IDT7200L12

IDT7200L15

IDT7200L20

IDT7200L25

IDT7201LA12

IDT7201LA15

IDT7201LA20

IDT7201LA25

IDT7202LA12

IDT7202LA15

IDT7202LA20

IDT7202LA25

Symbol

Parameter

Min.

Max.

Min.

Max.

Min.

Max.

Min.

Max.

Unit

Shift Frequency

33.3

28.5

MHz

Read Cycle Time

Access Time

Read Recovery Time

RPW

Read Pulse Width

(3)

RLZ

Read Pulse Low to Data Bus at Low Z

(4)

WLZ

Write Pulse High to Data Bus at Low Z

(4,5)

Data Valid from Read Pulse High

RHZ

Read Pulse High to Data Bus at High Z

(4)

Write Cycle Time

WPW

Write Pulse Width

(3)

Write Recovery Time

Data Set-up Time

Data Hold Time

RSC

Reset Cycle Time

Reset Pulse Width

(3)

RSS

Reset Set-up Time

(4)

RSR

Reset Recovery Time

RTC

Retransmit Cycle Time

Retransmit Pulse Width

(3)

RTS

Retransmit Set-up Time

(4)

RTR

Retransmit Recovery Time

EFL

Reset to Empty Flag Low

HFH,FFH

Reset to Half-Full and Full Flag High

RTF

Retransmit Low to Flags Valid

REF

Read Low to Empty Flag Low

RFF

Read High to Full Flag High

RPE

Read Pulse Width after

EF High

WEF

Write High to Empty Flag High

WFF

Write Low to Full Flag Low

WHF

Write Low to Half-Full Flag Low

RHF

Read High to Half-Full Flag High

WPF

Write Pulse Width after

FF High

XOL

Read/Write to

XO Low

XOH

Read/Write to

XO High

XI Pulse Width

(3)

XIR

XI Recovery Time

XIS

XI Set-up Time

NOTES:
1. Timings referenced as in AC Test Conditions.
2. Industrial temperature range product for 15ns and 25ns speed grades are available as a standard device.
3. Pulse widths less than minimum value are not allowed.
4. Values guaranteed by design, not currently tested.
5. Only applies to read data flow-through mode

AC ELECTRICAL CHARACTERISTICS

(1)

(Commercial: V

= 5V ± 10%, T

= 0

°C to +70°C; Industrial: V

= 5V ± 10%, T

= 40

°C to +85°C; Military: V

= 5V ± 10%, T

= 55

°C to +125°C)

COMMERCIAL, INDUSTRIAL AND MILITARY

TEMPERATURE RANGES

IDT7201L/7201LA/7202LA CMOS ASYNCHRONOUS FIFO
256 x 9, 512 x 9 and 1,024 x 9

Military

Commercial

Com'l & Mil.

(2)

Military

(2)

IDT7200L30

IDT7200L35

IDT7200L50

IDT7201LA30

IDT7201LA35

IDT7201LA50

IDT7202LA30

IDT7202LA35

IDT7202LA50

IDT7201LA80

Symbol

Parameter

Min.

Max.

Min.

Max.

Min.

Max.

Min.

Max.

Unit

Shift Frequency

22.2

MHz

Read Cycle Time

100

Access Time

Read Recovery Time

RPW

Read Pulse Width

(3)

RLZ

Read Pulse Low to Data Bus at Low Z

(4)

WLZ

Write Pulse High to Data Bus at Low Z

(4, 5)

Data Valid from Read Pulse High

RHZ

Read Pulse High to Data Bus at High Z

(4)

Write Cycle Time

100

WPW

Write Pulse Width

(3)

Write Recovery Time

Data Set-up Time

Data Hold Time

RSC

Reset Cycle Time

100

Reset Pulse Width

(3)

RSS

Reset Set-up Time

(4)

RSR

Reset Recovery Time

RTC

Retransmit Cycle Time

100

Retransmit Pulse Width

(3)

RTS

Retransmit Set-up Time

(4)

RTR

Retransmit Recovery Time

EFL

Reset to Empty Flag Low

100

HFH,FFH

Reset to Half-Full and Full Flag High

100

RTF

Retransmit Low to Flags Valid

100

REF

Read Low to Empty Flag Low

RFF

Read High to Full Flag High

RPE

Read Pulse Width after

EF High

WEF

Write High to Empty Flag High

WFF

Write Low to Full Flag Low

WHF

Write Low to Half-Full Flag Low

100

RHF

Read High to Half-Full Flag High

100

WPF

Write Pulse Width after

FF High

XOL

Read/Write to

XO Low

XOH

Read/Write to

XO High

XI Pulse Width

(3)

XIR

XI Recovery Time

XIS

XI Set-up Time

AC ELECTRICAL CHARACTERISTICS

(1)

(Continued)

(Commercial: V

= 5V ± 10%, T

= 0

°C to +70°C; Industrial: V

= 5V ± 10%, T

= 40

°C to +85°C; Military: V

= 5V ± 10%, T

= 55

°C to +125°C)

NOTES:
1. Timings referenced as in AC Test Conditions
2. Military speed grades of 50ns and 80ns are only available for IDT7201LA.
3. Pulse widths less than minimum value are not allowed.
4. Values guaranteed by design, not currently tested.
5. Only applies to read data flow-through mode.

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