72403L15SO IDT, 72403L15SO Datasheet

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72403L15SO

Manufacturer Part Number
72403L15SO
Description
FIFO
Manufacturer
IDT
Datasheet

Specifications of 72403L15SO

Part # Aliases
IDT72403L15SO
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IDT and the IDT logo are registered trademarks of Integrated Device Technology, Inc.
FAST is a trademark of National Semiconductor, Inc.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
© 2012 Integrated Device Technology, Inc.
FEATURES:
DESCRIPTION:
First-ln/First-Out memories organized 64 words by 4 bits. The IDT72403 also
FUNCTIONAL BLOCK DIAGRAM
D
MR
0-3
First-ln/First-Out Dual-Port memory
64 x 4 organization (IDT72401/72403)
RAM-based FIFO with low falI-through time
Low-power consumption
— Active: 175mW (typ.)
Maximum shift rate — 45MHz
High data output drive capability
Asynchronous and simultaneous read and write
Fully expandable by bit width
Fully expandable by word depth
IDT72403 have Output Enable pin to enable output data
High-speed data communications applications
High-performance CMOS technology
Available in CERDIP, plastic DIP and SOIC
Military product compliant to MlL-STD-883, Class B
Standard Military Drawing #5962-86846 and
5962-89523 is listed on this function.
Green parts available, see ordering information
The IDT72401 and IDT72403 are asynchronous high-performance
SI
IR
CONTROL
MASTER
DATA
RESET
LOGIC
INPUT
IN
All rights reserved. Product specifications subject to change without notice.
WRITE MULTIPLEXER
READ MULTIPLEXER
READ POINTER
WRITE POINTER
MEMORY
ARRAY
CMOS PARALLEL FIFO
1
has an Output Enable (OE) pin. The FlFOs accept 4-bit data at the data input
(D
to the output while all other data shifts down one location in the stack. The Input
Ready (IR) signal acts like a flag to indicate when the input is ready for new
data (IR = HIGH) or to signal when the FIFO is full (IR = LOW). The IR signal
can also be used to cascade multiple devices together. The Output Ready (OR)
signal is a flag to indicate that the output remains valid data (OR = HIGH) or
to indicate that the FIFO is empty (OR = LOW). The OR can also be used to
cascade multiple devices together.
to form composite signals.
the data outputs of the previous device. The IR pin of the receiving device is
connected to the SO pin of the sending device and the OR pin of the sending
device is connected to the Shift In (SI) pin of the receiving device.
FIFO to be used as a buffer between two digital machines of widely varying
operating frequencies. The 45MHz speed makes these FlFOs ideal for high-
speed communication and controller applications.
883, Class B.
64 x 4
0
A Shift Out (SO) signal causes the data at the next to last word to be shifted
Width expansion is accomplished by logically ANDing the IR and OR signals
Depth expansion is accomplished by tying the data inputs of one device to
Reading and writing operations are completely asynchronous allowing the
Military grade product is manufactured in compliance with the of MIL-STD-
-D
3
). The stored data stack up on a first-in/first-out basis.
MASTER
OUTPUT
ENABLE
DATA
RESET
IN
SO
OR
OE
(IDT72403 only)
Q
0-3
JUNE 2012
2747 drw01
IDT72401
IDT72403
DSC-2747/13

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72403L15SO Summary of contents

Page 1

... IN MASTER MR RESET IDT and the IDT logo are registered trademarks of Integrated Device Technology, Inc. FAST is a trademark of National Semiconductor, Inc. MILITARY AND COMMERCIAL TEMPERATURE RANGES © 2012 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. CMOS PARALLEL FIFO has an Output Enable (OE) pin ...

Page 2

... Not more than one output should be shorted at a time and duration of the short-circuit should not exceed one second. Guaranteed but not tested. 2. IDT72403 only. 3. Tested with outputs open ( HIGH for IDT72403. OUT 4. For frequencies greater than 10MHz 35mA + (1.5mA x [f –10MHz]) commercial, and Military availability for IDT72403 is 10MHz, 35MHz. IDT72401 is available for all MHz. Vcc ...

Page 3

... FIFO will respond to very small glitches due to long reflective lines, high capacitances and/or poor supply decoupling and grounding. A monolithic ceramic capacitor of 0.1μF directly between V 2. This parameter applies to FIFOs communicating with each other in a cascaded mode. IDT FIFOs are guaranteed to cascade with other IDT FIFOs of like speed grades. 3. IDT72403 only. ...

Page 4

... FlFOs together, as shown in Figures 10 and 11. OUTPUT ENABLE (OE) (IDT72403 ONLY) Output enable is used to read FIFO data onto a bus active LOW. OUTPUTS lines DATA OUTPUT (Q Data Output lines. The IDT72401 and IDT72403 have a 4-bit data output. 4 MILITARY AND COMMERCIAL TEMPERATURE RANGES 90% 90% 10% 10% <3ns < ...

Page 5

... IDT72401/72403 CMOS PARALLEL FIFO FUNCTIONAL DESCRIPTION The FIFO is designed using a dual port RAM architecture as opposed to the traditional shift register approach. This FIFO architecture has a write pointer, a read pointer and control logic, which allow simultaneous read and write operations. The write pointer is incremented by the falling edge of the Shift In (Sl) control ...

Page 6

... IDT72401/72403 CMOS PARALLEL FIFO ( (1) INPUT DATA NOTES: 1. FIFO is initially full pulse is applied held HIGH soon as IR becomes HIGH the Input Data is loaded into the FIFO. 5. The write pointer is incremented. SI should not go LOW until (t Figure 4 ...

Page 7

... PT Figure 7. t and t Specification PT OPH t MRIRH t MRORL t MRS t MRQ Figure 8. Master Reset Timing t t HZOE OOE –500mV and V +500mV levels on the output Figure 9. Output Enable Timing, IDT72403 Only ...

Page 8

... IR will return to the LOW state until SI is brought LOW LOW when the MR is ended, IR will go HIGH, but the data in the inputs will not enter the memory until SI goes HIGH. 5. FIFOs are expandable on depth and width. However, in forming wider words, two external gates are required to generate composite Input and OR flags. This is due to the variation of delays of the FIFOs. ...

Page 9

... Commercial and Military>72401only 15 Commercial and Military 10 L Low Power 72401 FIFO 72403 FIFO for SALES: 800-345-7015 or 408-284-8200 fax: 408-284-2775 www.idt.com 9 300 mil, P16-1 300 mil, D16-1 SOIC, SO16-1 Shift Frequency (fs) Speed in MHz 2747 drw 16 for Tech Support: 408-360-1753 email: FIFOhelp@idt.com ...

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