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IDT7282L12 Datasheet(PDF) 9 Page - Integrated Device Technology

Part # IDT7282L12
Description  CMOS DUAL ASYNCHRONOUS FIFO DUAL 256 x 9, DUAL 512 x 9,DUAL 1,024 x 9, DUAL 2,048 x 9,DUAL 4,096 x 9, DUAL 8,192 x 9
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Manufacturer  IDT [Integrated Device Technology]
Direct Link  http://www.idt.com
Logo IDT - Integrated Device Technology

IDT7282L12 Datasheet(HTML) 9 Page - Integrated Device Technology

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9
COMMERCIALTEMPERATURERANGE
IDT7280/7281/7282/7283/7284/7285 5V ASYNCHRONOUS FIFO
DUAL 256 x 9, 512 x 9, 1,024 x 9, 2,048 x 9, 4,096 x 9 and 8,192 x 9
Figure 14. Block Diagram of 1,024 x 9, 2,048 x 9, 4,096 x 9, 8,192 x 9, 16,384 x 9, 32,768 x 9 FIFO Memory (Depth Expansion)
TABLE 1 — RESET AND RETRANSMIT
Single Device Configuration/Width Expansion Mode
Inputs
Internal Status
Outputs
Mode
RS
RT
XI
Read Pointer
Write Pointer
EF
FF
HF
Reset
0
X
0
LocationZero
LocationZero
0
1
1
Retransmit
1
0
0
LocationZero
Unchanged
X
X
X
Read/Write
1
1
0
Increment
(1)
Increment
(1)
XXX
NOTE:
1. Pointer will increment if flag is High.
TABLE 2 — RESET AND FIRST LOAD TRUTH TABLE
Depth Expansion/Compound Expansion Mode
Inputs
Internal Status
Outputs
Mode
RS
FL
XI
Read Pointer
Write Pointer
EF
FF
Reset First Device
0
0
(1)
LocationZero
LocationZero
0
1
Reset All Other Devices
0
1
(1)
LocationZero
LocationZero
0
1
Read/Write
1
X
(1)
X
X
X
X
NOTE:
10
1.
XI is connected to XO of previous device. See Figure 14. RS = Reset Input, FL/RT = First Load/Retransmit, EF = Empty Flag Output, FF = Full Flag Output,
XI = Expansion Input, HF = Half-Full Flag Output
D
W
FFB
EFB
FLB
XOB
RSA
FULL
EMPTY
V CC
R
9
9
99
XIB
9
Q
FFA
EFA
FLA
XOA
XIA
FFB
EFB
FLB
XIB
3208 drw 16
XOA
FIFO A
FIFO B
FIFO A
FIFO B
XIA
XOB
EFA
FLA
FFA
7280/7281/
7282/7283/
7284/7285
7280/7281/
7282/7283/
7284/7285


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