IDT72511 View Datasheet(PDF) - Integrated Device Technology

Part Name

Description

Manufacturer

IDT72511

PARALLEL BIDIRECTIONAL FIFO 512 x 18 & 1024 x 18

Integrated Device Technology 

IDT72511/IDT72521

BIDIRECTIONAL FIRST-IN FIRST-OUT MEMORY

MILITARY AND COMMERCIAL TEMPERATURE RANGES

AC ELECTRICAL CHARACTERISTICS

(Commercial: VCC = 5V ± 10%, TA = 0°C to + 70°C; Military: VCC = 5V ± 10%, TA = –55°C to + 125°C)

Commercial

Military

Com'l & Mil.(1)

Symbol

Parameter

IDT72511L25 IDT72511L35

IDT72511L50

IDT72521L25 IDT72521L35 IDT72521L40 IDT72521L50

Min. Max. Min. Max. Min. Max. Min. Max. Unit

PORT B PROCESSOR INTERFACE TIMING

tbA

Port B access time

—

25

—

35

—

40

—

50

ns

tbLZ

Read or write pulse

LOW to data bus at

Low-Z

5

—

5

—

5

—

5

—

ns

tbHZ

Read or write pulse

HIGH to data bus at

High-Z

—

15

—

20

—

25

—

30

ns

tbDV

Data valid from read

pulse HIGH

5

—

5

—

5

—

5

—

ns

tbRC

Read cycle time

35

—

45

—

50

—

65

—

ns

tbRPW

tbRR

tbS

tbH

Read pulse width

Read recovery time

R/WB set-up time

R/WB hold time

25

—

35

—

40

—

50

—

ns

10

—

10

—

10

—

15

—

ns

5

—

5

—

5

—

5

—

ns

5

—

5

—

5

—

5

—

ns

tbDS

Data set-up time

15

—

18

—

20

—

30

—

ns

tbDH

tbWC

Data hold time

Write cycle time

0

—

2

—

5

—

5

—

ns

35

—

45

—

50

—

65

—

ns

tbWPW Write pulse width

25

—

35

—

40

—

50

—

ns

tbWR

Write recovery time

10

—

10

—

10

—

15

—

ns

PORT B PERIPHERAL INTERFACE TIMING

tbA

tbCKC

Port B access time

Clock cycle time

—

25

—

40

—

45

—

55

ns

15

—

20

—

20

—

25

—

ns

tbCKH

Clock pulse HIGH time

6

—

6

—

8

—

10

—

ns

tbCKL

Clock pulse LOW time

6

—

6

—

8

—

10

—

ns

tbREQS Request set-up time

5

—

5

—

5

—

10

—

ns

tbREQH Request hold time

5

—

5

—

5

—

5

—

ns

tbACKL Delay from a rising clock —

15

—

18

—

20

—

25

ns

edge to ACK switching

NOTE:

1. IDT72511 not available in military.

Timing

Figure

13, 14, 15

13, 14, 15

14, 13, 15

13, 14, 15, 16

13

13

13

13

13

13, 14, 15

13, 14, 15

13

13, 15

13

17

17

17

17

17

17

17

2668 tbl 22

5.32

16

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