• Pin and functionally compatible with IDT720X family
• Status Flags: Empty, Half-Full, Full
• Retransmit capability
• High-performance CMOS technology
• Military product compliant to MIL-STD-883, Class B
• Standard Military Drawing for #5962-88669 (IDT7203),
5962-89567 (IDT7203), and 5962-89568 (IDT7204) are
listed on this function
• Industrial temperature range (-40
able, tested to military electrical specifications
.
o
C to +85oC) is avail-
IDT7203
IDT7204
IDT7205
IDT7206
DESCRIPTION:
The IDT7203/7204/7205/7206 are dual-port memory buffers with internal pointers that load and empty data on a firstin/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 devices 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.
The IDT7203/7204/7205/7206 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
DATA INPUTS
0(D –D8)
WRITE
CONTROL
WRITE
POINTER
THREESTATE
BUFFERS
R
XI
READ
CONTROL
FLAG
LOGIC
EXPANSION
LOGIC
RAM ARRAY
2048 x 9
4096 x 9
8192 x 9
16384 x 9
DATA OUTPUTS
0(Q –Q8)
EFFF
XO/HF
READ
POINTER
RS
RESET
LOGIC
FL/RT
2661 drw 01
The IDT logo is a registered trademark of Integrated Device Techology, Inc.
MILITARY AND COMMERCIAL TEMPERATURE RANGESDECEMBER 1996
For latest information contact IDT's web site at www.idt.com or fax-on-demand at 408-492-8391.
5.041
IDT7203/7204/7205/7206 CMOS ASYNCHRONOUS FIFO
2048 x 9, 4096 x 9, 8192 x 9 and 16384 x 9MILITARY AND COMMERCIAL TEMPERATURE RANGES
PIN CONFIGURATIONS
W
D
D
D
D
D
XI
FF
Q
Q
Q
Q
Q
GND
1
2
8
3
3
4
2
1
0
0
1
2
3
8
5
6
7
8
9
10
11
12
13
14
P28-1
P28-2
D28-1
D28-3
SO28-3
28
27
26
25
24
23
22
21
20
19
18
17
16
15
2661 drw 02a
Vcc
D
4
D
5
6
D
D
7
FL/RTRSEF
XO/HF
Q
7
6
Q
5
Q
Q
4
R
DIP
TOP VIEW
NOTES:
1. The THINDIPs P28-2 and D28-3 are only available for the 7203/7204/
7205.
2. The small outline package SO28-3 is only available for the 7204.
3. Consult factory for CERPACK pinout.
INDEX
2
D
D
1
0
D
XI
FF
Q
0
1
Q
NC
Q
2
8
D3D
432
5
6
7
8
9
10
11
12
13
1415161718
3
8
Q
Q
PLCC/LCC
TOP VIEW
NC
W
1
J32-1
&
L32-1
GND
NC
Vcc
32
R
4
D
31
19
Q
4
5
D
30
29
28
27
26
25
24
23
22
21
20
5
Q
2661 drw 02b
D
6
D
7
NC
FL/RTRS
EF
XO/HF
Q
7
Q
6
ABSOLUTE MAXIMUM RATINGS
(1)
SymbolRatingCommercialMilitaryUnit
V
TERMTerminal–0.5 to + 7.0–0.5 to +7.0V
Voltage with
Respect to
GND
T
AOperating0 to +70–55 to +125° C
Temperature
T
BIASTemperature –55 to +125–65 to +135° C
Under Bias
T
STGStorage–55 to + 125–65 to +155° C
Temperature
I
OUTDC Output5050mA
Current
NOTE:2661 tbl 01
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
SymbolParameterMin.Typ.Max.Unit
V
CCMMilitary Supply4.55.05.5V
Voltage
CCCCommercial Supply4.55.05.5V
V
Voltage
GNDSupply Voltage000V
(1)
V
IH
V
IH
V
IL
NOTE:2661 tbl 02
1. 1.5V undershoots are allowed for 10ns once per cycle.
Input High Voltage2.0——V
Commercial
(1)
Input High Voltage2.2——V
Military
(1)
Input Low Voltage——0.8V
Commercial and
Military
5.042
IDT7203/7204/7205/7206 CMOS ASYNCHRONOUS FIFO
2048 x 9, 4096 x 9, 8192 x 9 and 16384 x 9MILITARY AND COMMERCIAL TEMPERATURE RANGES
DC ELECTRICAL CHARACTERISTICS FOR THE 7203 AND 7204
(Commercial: VCC = 5.0V±10%, TA = 0°C to +70°C; Military: VCC = 5.0V±10%, TA = –55°C to +125°C)