DSC-2661/13

SEPTEMBER 2002

CMOS ASYNCHRONOUS FIFO
2,048 x 9, 4,096 x 9
8,192 x 9, 16,384 x 9
32,768 x 9 and 65,536 x 9

IDT7203
IDT7204
IDT7205
IDT7206
IDT7207
IDT7208

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

COMMERCIAL, MILITARY AND INDUSTRIAL TEMPERATURE RANGES

FEATURES:

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First-In/First-Out Dual-Port memory

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2,048 x 9 organization (IDT7203)

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4,096 x 9 organization (IDT7204)

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8,192 x 9 organization (IDT7205)

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16,384 x 9 organization (IDT7206)

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32,768 x 9 organization (IDT7207)

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65,636 x 9 organization (IDT7208)

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High-speed: 12ns access time

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Low power consumption
-- Active: 660mW (max.)
-- Power-down: 44mW (max.)

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Asynchronous and simultaneous read and write

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Fully expandable in both word depth and width

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Pin and functionally compatible with IDT720X family

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Status Flags: Empty, Half-Full, Full

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Retransmit capability

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High-performance CMOS technology

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

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Standard Military Drawing for #5962-88669 (IDT7203), 5962-89567
(IDT7203), and 5962-89568 (IDT7204) are listed on this function

DESCRIPTION:

The IDT7203/7204/7205/7206/7207/7208 are dual-port memory buffers

with internal pointers that load and empty data on a first-in/first-out basis. The
device uses 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.

Data is toggled in and out of the device through the use of the Write (

W) and

Read (

R) pins.

The device's 9-bit width provides a bit for a control or parity at the user's

option. It also features a Retransmit (

RT) capability that allows the read pointer

to be reset to its initial position when

RT is pulsed LOW. A Half-Full Flag is

available in the single device and width expansion modes.

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

They are designed for applications requiring asynchronous and simultaneous
read/writes in multiprocessing, rate buffering and other applications.

Military grade product is manufactured in compliance with the latest revision

of MIL-STD-883, Class B.

FUNCTIONAL BLOCK DIAGRAM

Industrial temperature range (40

°C to +85°C) is available

(plastic packages only)

WRITE

CONTROL

READ

CONTROL

FLAG

LOGIC

EXPANSION

LOGIC

WRITE

POINTER

RAM ARRAY

2,048 x 9
4,096 x 9
8,192 x 9

16,384 x 9
32,768 x 9
65,536 x 9

READ

POINTER

DATA INPUTS

RESET

LOGIC

THREE-
STATE
BUFFERS

DATA OUTPUTS

XO/HF

FL/RT

(D -D

)

-Q

)

2661 drw01

COMMERCIAL, INDUSTRIAL AND MILITARY

TEMPERATURE RANGES

IDT7203/7204/7205/7206/7207/7208 CMOS ASYNCHRONOUS FIFO
2,048 x 9, 4,096 x 9, 8,192 x 9, 16,384 x 9, 32,768 x 9 and 65,536 x 9

PIN CONFIGURATIONS

Symbol

Rating

Com'l & Ind'l

Military

Unit

TERM

Terminal

0.5 to +7.0

Voltage with
Respect to GND

STG

Storage

55 to + 125

65 to +155

°C

Temperature

OUT

DC Output

50 to +50

+Current

Reference

Order

Device

Package Type

Identifier

Code

Availability

PLASTIC DIP

P28-1

All devices

PLASTIC THIN DIP

P28-2

T P

All except IDT7207/7208

CERDIP

D28-1

All except IDT7208

THIN CERDIP

D28-3

Only for IDT7203/7204/7205

SOIC

SO28-3

Only for IDT7204

Reference

Order

Device

Package Type

Identifier

Code

Availability

PLCC

J32-1

All devices

LCC

(1)

L32-1

All except IDT7208

TOP VIEW

NOTE:
1. This package is only available in the military temperature range.

NOTES:

1. For

RT/RS/XI input, V

= 2.6V (commercial).

For

RT/RS/XI input, V

= 2.6V (military).

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

6
7

8
9

10
11

12
13

GND

2
3
4

28
27

26
25

24
23
22
21

XO/HF

Vcc

FL/RT

20
19
18
17

16
15

2661 drw02a

5
6
7

8
9

28
27
26

25
24

XO/HF

NC
FL/RT

INDEX

W NC Vcc

GND

2661 drw02b

ABSOLUTE MAXIMUM RATINGS

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.

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

2.0

Commercial/Industrial

(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

COMMERCIAL, INDUSTRIAL AND MILITARY

TEMPERATURE RANGES

IDT7203/7204/7205/7206/7207/7208 CMOS ASYNCHRONOUS FIFO
2,048 x 9, 4,096 x 9, 8,192 x 9, 16,384 x 9, 32,768 x 9 and 65,536 x 9

IDT7203

(1)

IDT7203

IDT7204

(1)

IDT7204

Commercial and Industrial

Military

(3)

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

= 20, 30, 40 ns

Symbol

Parameter

Min.

Typ.

Max.

Min.

Typ.

Max.

Unit

(6)

Input Leakage Current (Any Input)

µA

(7)

Output Leakage Current

µA

Output Logic "1" Voltage I

= 2mA

2.4

Output Logic "0" Voltage I

= 8mA

0.4

CC1

(8,9,10)

Active Power Supply Current

120

150

CC2

(8,10,11)

Standby Current (

R=W=RS=FL/RT=V

)

CC3

(8,10,12)

Power Down Current

AC TEST CONDITIONS

NOTES:
1. Industrial temperature range product for 15ns and 25ns speed grades are available

as a standard device.

2. Industrial temperature range product for 25ns speed grade only is available as a standard

device. All other speed grades are available by special order.

3. Military temperature range product for the 40ns is only available for 7203.
4. Commercial temperature range product for the 12ns not available.
5. Commercial temperature range product for the 12ns, 15ns and 50ns not available.

IDT7205

(2)

IDT7205

IDT7206

(2,4)

IDT7206

IDT7207

(2,4)

IDT7207

IDT7208

(2,5)

Commercial and Industrial

Military

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

= 20, 30 ns

Symbol

Parameter

Min.

Typ.

Max.

Min.

Typ.

Max.

Unit

(6)

Input Leakage Current (Any Input)

µA

(7)

Output Leakage Current

µA

Output Logic "1" Voltage I

= 2mA

2.4

Output Logic "0" Voltage I

= 8mA

0.4

CC1

(8,9,10)

Active Power Supply Current

120

150

CC2

(8,10,11)

Standby Current (

RS=FL/RT=V

)

CC3

(8,10,12)

Power Down Current

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

1.1K

30pF*

680

D.U.T.

or equivalent circuit

2661 drw03

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°C)

6. Measurements with 0.4

, 0.4

OUT

8. Tested with outputs open (I

OUT

= 0).

R and W toggle at 20 MHz and data inputs switch at 10 MHz.

10. I

measurements are made with outputs open.

11. All Inputs = V

- 0.2V or GND + 0.2V, except

R and W, which toggle at 20MHz.

12. All Inputs = V

- 0.2V or GND + 0.2V, except

R and W = V

-0.2V.

CAPACITANCE

(1)

= +25

°C, f = 1.0 MHz)

NOTES:

1. This parameter is sampled and not 100% tested.
2. With output deselected.

Symbol

Parameter

Condition

Max.

Unit

(1)

Input Capacitance

= 0V

OUT

(1,2)

Output Capacitance

OUT

= 0V

Figure 1. Output Load

*Includes jig and scope capacitances.

COMMERCIAL, INDUSTRIAL AND MILITARY

TEMPERATURE RANGES

IDT7203/7204/7205/7206/7207/7208 CMOS ASYNCHRONOUS FIFO
2,048 x 9, 4,096 x 9, 8,192 x 9, 16,384 x 9, 32,768 x 9 and 65,536 x 9

Commercial

Com'l & Ind'l

Com'l & Military

Commercial

Com'l & Ind'l

IDT7203L12

IDT7203L15

(2)

IDT7203L20

IDT7208L20

IDT7203L25

(2)

IDT7204L12

IDT7204L15

(2)

IDT7204L20

IDT7204L25

(2)

IDT7205L12

IDT7205L15

IDT7205L20

IDT7205L25

(3)

IDT7206L15

IDT7206L20

IDT7206L25

(3)

IDT7207L15

IDT7207L20

IDT7207L25

(3)

IDT7208L25

(3)

Symbol

Parameters

Min.

Max.

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

(4)

RLZ

Read LOW to Data Bus LOW

(5)

WLZ

Write HIGH to Data Bus Low-Z

(5,6)

Data Valid from Read HIGH

RHZ

Read HIGH to Data Bus High-Z

(5)

Write Cycle Time

WPW

Write Pulse Width

(4)

Write Recovery Time

Data Set-up Time

Data Hold Time

RSC

Reset Cycle Time

Reset Pulse Width

(4)

RSS

Reset Set-up Time

(5)

RTR

Reset Recovery Time

RTC

Retransmit Cycle Time

Retransmit Pulse Width

(4)

RTS

Retransmit Set-up Time

(5)

RTR

Retransmit Recovery Time

EFL

Reset to

EF LOW

HFH

, t

FFH

Reset to

HF and FF HIGH

RTF

Retransmit LOW to Flags Valid

REF

Read LOW to

EF LOW

RFF

Read HIGH to

FF HIGH

RPE

Read Pulse Width after

EF HIGH

WEF

Write HIGH to

EF HIGH

WFF

Write LOW to

FF LOW

WHF

Write LOW to

HF Flag LOW

RHF

Read HIGH to

HF Flag HIGH

WPF

Write Pulse Width after

FF HIGH

XOL

Read/Write LOW to

XO LOW

XOH

Read/Write HIGH to

XO HIGH

XI Pulse Width

(4)

XIR

XI Recovery Time

XIS

XI Set-up Time

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)

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. Industrial temperature range product for 25ns speed grade only is available as a standard device. All other speed grades are available by special order.
4. Pulse widths less than minimum are not allowed.
5. Values guaranteed by design, not currently tested.
6. Only applies to read data flow-through mode.

COMMERCIAL, INDUSTRIAL AND MILITARY

TEMPERATURE RANGES

IDT7203/7204/7205/7206/7207/7208 CMOS ASYNCHRONOUS FIFO
2,048 x 9, 4,096 x 9, 8,192 x 9, 16,384 x 9, 32,768 x 9 and 65,536 x 9

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. Pulse widths less than minimum are not allowed.
3. Values guaranteed by design, not currently tested.
4. Only applies to read data flow-through mode.

Military

Commercial

Military

Commercial

IDT7203L30

IDT7203L35

IDT7203L40

IDT7203L50

IDT7204L30

IDT7204L35

IDT7204L50

IDT7205L30

IDT7205L35

IDT7205L50

IDT7206L30

IDT7206L35

IDT7206L50

IDT7207L30

IDT7207L35

IDT7207L50

IDT7208L35

Symbol

Parameters

Min.

Max.

Min.

Max.

Min.

Max.

Min.

Max.

Unit

Shift Frequency

22.22

MHz

Read Cycle Time

Access Time

Read Recovery Time

RPW

Read Pulse Width

(2)

RLZ

Read LOW to Data Bus LOW

(3)

WLZ

Write HIGH to Data Bus Low-Z

(3,4)

Data Valid from Read HIGH

RHZ

Read HIGH to Data Bus High-Z

(3)

Write Cycle Time

WPW

Write Pulse Width

(2)

Write Recovery Time

Data Set-up Time

Data Hold Time

RSC

Reset Cycle Time

Reset Pulse Width

(2)

RSS

Reset Set-up Time

(3)

RTR

Reset Recovery Time

RTC

Retransmit Cycle Time

Retransmit Pulse Width

(2)

RTS

Retransmit Set-up Time

(3)

RTR

Retransmit Recovery Time

EFL

Reset to

EF LOW

HFH

, t

FFH

Reset to

HF and FF HIGH

RTF

Retransmit LOW to Flags Valid

REF

Read LOW to

EF LOW

RFF

Read HIGH to

FF HIGH

RPE

Read Pulse Width after

EF HIGH

WEF

Write HIGH to

EF HIGH

WFF

Write LOW to

FF LOW

WHF

Write LOW to

HF Flag LOW

RHF

Read HIGH to

HF Flag HIGH

WPF

Write Pulse Width after

FF HIGH

XOL

Read/Write LOW to

XO LOW

XOH

Read/Write HIGH to

XO HIGH

XI Pulse Width

(2)

XIR

XI Recovery Time

XIS

XI Set-up Time

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