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
FEATURES:
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
First-In/First-Out Dual-Port memory
2,048 x 9 organization (IDT7203)
4,096 x 9 organization (IDT7204)
8,192 x 9 organization (IDT7205)
16,384 x 9 organization (IDT7206)
32,768 x 9 organization (IDT7207)
65,636 x 9 organization (IDT7208)
High-speed: 12ns access time
Low power consumption
— Active: 660mW (max.)
— Power-down: 44mW (max.)
Asynchronous and simultaneous read and write
Fully expandable in both word depth and width
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°C to +85°C) is available
(plastic packages only)
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
DATA INPUTS
(D
0
-D
8
)
W
WRITE
CONTROL
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
THREE-
STATE
BUFFERS
R
READ
CONTROL
FLAG
LOGIC
DATA OUTPUTS
(Q
0
-Q
8
)
RS
RESET
LOGIC
FL/RT
EF
FF
XI
EXPANSION
LOGIC
XO/HF
2661 drw01
IDT and the IDT logo are registered trademarks of Integrated Device Technology, Inc.
COMMERCIAL, MILITARY AND INDUSTRIAL TEMPERATURE RANGES
1
2002 Integrated Device Technology, Inc. All rights reserved. Product subject to change without notice.
SEPTEMBER 2002
DSC-2661/13
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, INDUSTRIAL AND MILITARY
TEMPERATURE RANGES
PIN CONFIGURATIONS
W
D
8
D
3
D
2
D
1
D
0
XI
FF
Q
0
Q
1
Q
2
Q
3
Q
8
GND
Vcc
D
4
D
5
D
6
D
7
FL/RT
RS
EF
XO/HF
Q
7
Q
6
Q
5
Q
4
R
INDEX
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
2661 drw02a
TOP VIEW
Package Type
PLASTIC DIP
PLASTIC THIN DIP
CERDIP
THIN CERDIP
SOIC
Reference
Identifier
P28-1
P28-2
D28-1
D28-3
SO28-3
Order
Code
P
TP
D
TD
SO
Device
Availability
All devices
All except IDT7207/7208
All except IDT7208
Only for IDT7203/7204/7205
Only for IDT7204
Package Type
PLCC
LCC
(1)
Reference
Identifier
J32-1
L32-1
Q
3
Q
8
GND
NC
R
Q
4
Q
5
TOP VIEW
Order
Code
J
L
Symbol
V
CC
Parameter
Supply Voltage
Commercial/Industrial/Military
Supply Voltage
Input High Voltage
Commercial/Industrial
Input High Voltage Military
Input Low Voltage
Commercial/Industrial/Military
Operating Temperature Commercial
Operating Temperature Industrial
Operating Temperature Military
14
15
16
17
18
19
20
D
2
D
1
D
0
XI
FF
Q
0
Q
1
NC
Q
2
32
31
30
1
4
3
2
D
3
D
8
W
NC
Vcc
D
4
D
5
5
6
7
8
9
10
11
12
13
29
28
27
26
25
24
23
22
21
D
6
D
7
NC
FL/RT
RS
EF
XO/HF
Q
7
Q
6
2661 drw02b
Device
Availability
All devices
All except IDT7208
NOTE:
1. This package is only available in the military temperature range.
RECOMMENDED DC OPERATING
CONDITIONS
Min.
4.5
0
2.0
2.2
—
0
–40
–55
Typ.
5.0
0
—
—
—
—
—
—
Max.
5.5
0
—
—
0.8
70
85
125
Unit
V
V
V
V
V
°C
°C
°C
ABSOLUTE MAXIMUM RATINGS
Symbol
V
TERM
Rating
Terminal
Voltage with
Respect to GND
Storage
Temperature
DC Output
+Current
Com'l & Ind'l
–0.5 to +7.0
Military
–0.5 to +7.0
Unit
V
GND
V
IH
(1)
V
IH
(1)
–55 to + 125
–50 to +50
–65 to +155
–50 to +50
°C
mA
V
IL
T
A
T
A
T
A
(2)
T
STG
I
OUT
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.
NOTES:
1. For
RT/RS/XI
input, V
IH
= 2.6V (commercial).
For
RT/RS/XI
input, V
IH
= 2.6V (military).
2. 1.5V undershoots are allowed for 10ns once per cycle.
2
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, INDUSTRIAL AND MILITARY
TEMPERATURE RANGES
DC ELECTRICAL CHARACTERISTICS
(Commercial: V
CC
= 5V ± 10%, T
A
= 0°C to +70°C; Industrial: V
CC
= 5V ± 10%, T
A
= –40°C to +85°C; Military: V
CC
= 5V ± 10%, T
A
= –55°C to +125°C)
IDT7203
(1)
IDT7204
(1)
Commercial and Industrial
t
A
= 12, 15, 20, 25, 35, 50 ns
Symbol
I
LI
(6)
I
LO
(7)
V
OH
V
OL
I
CC1
(8,9,10)
I
CC2
(8,10,11)
I
CC3
(8,10,12)
Parameter
Input Leakage Current (Any Input)
Output Leakage Current
Output Logic “1” Voltage I
OH
= –2mA
Output Logic “0” Voltage I
OL
= 8mA
Active Power Supply Current
Standby Current (R=W=RS=FL/RT=V
IH
)
Power Down Current
Min.
–1
–10
2.4
—
—
—
—
Typ.
—
—
—
—
—
—
—
Max.
1
10
—
0.4
120
12
2
Min.
–1
–10
2.4
—
—
—
—
IDT7203
IDT7204
Military
(3)
t
A
= 20, 30, 40 ns
Typ.
—
—
—
—
—
—
—
IDT7205
IDT7206
IDT7207
Military
t
A
= 20, 30 ns
Min.
–1
–10
2.4
—
—
—
—
Typ.
—
—
—
—
—
—
—
Max.
1
10
—
0.4
150
25
12
Unit
µA
µA
V
V
mA
mA
mA
1
10
—
0.4
120
12
8
Max.
1
10
—
0.4
150
25
4
Unit
µA
µA
V
V
mA
mA
mA
IDT7205
(2)
IDT7206
(2,4)
IDT7207
(2,4)
IDT7208
(2,5)
Commercial and Industrial
t
A
= 12, 15, 20, 25, 35, 50 ns
Symbol
I
LI
(6)
(7)
Parameter
Input Leakage Current (Any Input)
Output Leakage Current
Output Logic “1” Voltage I
OH
= –2mA
Output Logic “0” Voltage I
OL
= 8mA
Active Power Supply Current
Standby Current (RS=FL/RT=V
IH
)
Power Down Current
Min.
–1
–10
2.4
—
—
—
—
Typ.
—
—
—
—
—
—
—
Max.
I
LO
V
OH
V
OL
I
CC1
(8,9,10)
I
CC2
(8,10,11)
I
CC3
(8,10,12)
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.
6. Measurements with 0.4
≤
V
IN
≤
V
CC
.
7.
R
≥
V
IH
, 0.4
≤
V
OUT
≤
V
CC
.
8. Tested with outputs open (I
OUT
= 0).
9.
R
and
W
toggle at 20 MHz and data inputs switch at 10 MHz.
10. I
CC
measurements are made with outputs open.
11. All Inputs = V
CC
- 0.2V or GND + 0.2V, except
R
and
W,
which toggle at 20MHz.
12. All Inputs = V
CC
- 0.2V or GND + 0.2V, except
R
and
W
= V
CC
-0.2V.
5V
AC TEST CONDITIONS
Input Pulse Levels
Input Rise/Fall Times
Input Timing Reference Levels
Output Reference Levels
Output Load
GND to 3.0V
5ns
1.5V
1.5V
See Figure 1
1.1KΩ
D.U.T.
680Ω
30pF*
CAPACITANCE
(1)
(T
A
= +25°C, f = 1.0 MHz)
Symbol
C
IN
(1)
C
OUT
(1,2)
Parameter
Input Capacitance
Output Capacitance
Condition
V
IN
= 0V
V
OUT
= 0V
Max.
10
10
Unit
2661 drw03
pF
pF
or equivalent circuit
NOTES:
1. This parameter is sampled and not 100% tested.
2. With output deselected.
Figure 1. Output Load
*Includes jig and scope capacitances.
3
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, INDUSTRIAL AND MILITARY
TEMPERATURE RANGES
AC ELECTRICAL CHARACTERISTICS
(1)
(Commercial: V
CC
= 5V ± 10%, T
A
= 0°C to +70°C; Industrial: V
CC
= 5V ± 10%, T
A
= –40°C to +85°C; Military: V
CC
= 5V ± 10%, T
A
= –55°C to +125°C)
Commercial
IDT7203L12
IDT7204L12
IDT7205L12
Com'l & Ind'l
IDT7203L15
(2)
IDT7204L15
(2)
IDT7205L15
IDT7206L15
IDT7207L15
Min.
—
25
—
10
15
5
5
5
—
25
15
10
11
0
25
15
15
10
25
15
15
10
—
—
—
—
—
15
—
—
—
—
15
—
—
15
10
10
Max.
40
—
15
—
—
—
—
—
15
—
—
—
—
—
—
—
—
—
—
—
—
—
25
25
25
15
15
—
15
15
25
25
—
15
15
—
—
—
Com'l & Military
IDT7203L20
IDT7204L20
IDT7205L20
IDT7206L20
IDT7207L20
Min.
—
30
—
10
20
5
5
5
—
30
20
10
12
0
30
20
20
10
30
20
20
10
—
—
—
—
—
20
—
—
—
—
20
—
—
20
10
10
Max.
33.3
—
20
—
—
—
—
—
15
—
—
—
—
—
—
—
—
—
—
—
—
—
30
30
30
20
20
—
20
20
30
30
—
20
20
—
—
—
Commercial
IDT7208L20
Com'l & Ind'l
IDT7203L25
(2)
IDT7204L25
(2)
IDT7205L25
(3)
IDT7206L25
(3)
IDT7207L25
(3)
IDT7208L25
(3)
Min.
—
35
—
10
25
5
5
5
—
35
25
10
15
0
35
25
25
10
35
25
25
10
—
—
—
—
—
25
—
—
—
—
25
—
—
25
10
10
Max.
28.5
—
25
—
—
—
—
—
18
—
—
—
—
—
—
—
—
—
—
—
—
—
35
35
35
25
25
—
25
25
35
35
—
25
25
—
—
—
Unit
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Symbol
f
S
t
RC
t
A
t
RR
t
RPW
t
RLZ
t
WLZ
t
DV
t
RHZ
t
WC
t
WPW
t
WR
t
DS
t
DH
t
RSC
t
RS
t
RSS
t
RTR
t
RTC
t
RT
t
RTS
t
RTR
t
EFL
t
HFH
, t
FFH
t
RTF
t
REF
t
RFF
t
RPE
t
WEF
t
WFF
t
WHF
t
RHF
t
WPF
t
XOL
t
XOH
t
XI
t
XIR
t
XIS
Parameters
Shift Frequency
Read Cycle Time
Access Time
Read Recovery Time
Read Pulse Width
(4)
Read LOW to Data Bus LOW
(5)
Write HIGH to Data Bus Low-Z
(5,6)
Data Valid from Read HIGH
Read HIGH to Data Bus High-Z
(5)
Write Cycle Time
Write Pulse Width
(4)
Write Recovery Time
Data Set-up Time
Data Hold Time
Reset Cycle Time
Reset Pulse Width
(4)
Reset Set-up Time
(5)
Reset Recovery Time
Retransmit Cycle Time
Retransmit Pulse Width
(4)
Retransmit Set-up Time
(5)
Retransmit Recovery Time
Reset to
EF
LOW
Reset to
HF
and
FF
HIGH
Retransmit LOW to Flags Valid
Read LOW to
EF
LOW
Read HIGH to
FF
HIGH
Read Pulse Width after
EF
HIGH
Write HIGH to
EF
HIGH
Write LOW to
FF
LOW
Write LOW to
HF
Flag LOW
Read HIGH to
HF
Flag HIGH
Write Pulse Width after
FF
HIGH
Read/Write LOW to
XO
LOW
Read/Write HIGH to
XO
HIGH
XI
Pulse Width
(4)
XI
Recovery Time
XI
Set-up Time
Min.
—
20
—
8
12
3
3
5
—
20
12
8
9
0
20
12
12
8
20
12
12
8
—
—
—
—
—
12
—
—
—
—
12
—
—
12
8
8
Max.
50
—
12
—
—
—
—
—
12
—
—
—
—
—
—
—
—
—
—
—
—
—
12
17
20
12
14
—
12
14
17
17
—
12
12
—
—
—
Min.
—
30
—
10
20
5
5
5
—
30
20
10
12
0
30
20
20
10
30
20
20
10
—
—
—
—
—
20
—
—
—
—
20
—
—
20
10
10
Max.
33.3
—
20
—
—
—
—
—
15
—
—
—
—
—
—
—
—
—
—
—
—
—
30
30
30
20
20
—
20
20
30
30
—
20
20
—
—
—
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.
4
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, INDUSTRIAL AND MILITARY
TEMPERATURE RANGES
AC ELECTRICAL CHARACTERISTICS
(1)
(CONTINUED)
(Commercial: V
CC
= 5V ± 10%, T
A
= 0°C to +70°C; Industrial: V
CC
= 5V ± 10%, T
A
= –40°C to +85°C; Military: V
CC
= 5V ± 10%, T
A
= –55°C to +125°C)
Military
IDT7203L30
IDT7204L30
IDT7205L30
IDT7206L30
IDT7207L30
Symbol
f
S
t
RC
t
A
t
RR
t
RPW
t
RLZ
t
WLZ
t
DV
t
RHZ
t
WC
t
WPW
t
WR
t
DS
t
DH
t
RSC
t
RS
t
RSS
t
RTR
t
RTC
t
RT
t
RTS
t
RTR
t
EFL
t
HFH
, t
FFH
t
RTF
t
REF
t
RFF
t
RPE
t
WEF
t
WFF
t
WHF
t
RHF
t
WPF
t
XOL
t
XOH
t
XI
t
XIR
t
XIS
Parameters
Shift Frequency
Read Cycle Time
Access Time
Read Recovery Time
Read Pulse Width
(2)
Read LOW to Data Bus LOW
(3)
Write HIGH to Data Bus Low-Z
(3,4)
Data Valid from Read HIGH
Read HIGH to Data Bus High-Z
(3)
Write Cycle Time
Write Pulse Width
(2)
Write Recovery Time
Data Set-up Time
Data Hold Time
Reset Cycle Time
Reset Pulse Width
(2)
Reset Set-up Time
(3)
Reset Recovery Time
Retransmit Cycle Time
Retransmit Pulse Width
(2)
Retransmit Set-up Time
(3)
Retransmit Recovery Time
Reset to
EF
LOW
Reset to
HF
and
FF
HIGH
Retransmit LOW to Flags Valid
Read LOW to
EF
LOW
Read HIGH to
FF
HIGH
Read Pulse Width after
EF
HIGH
Write HIGH to
EF
HIGH
Write LOW to
FF
LOW
Write LOW to
HF
Flag LOW
Read HIGH to
HF
Flag HIGH
Write Pulse Width after
FF
HIGH
Read/Write LOW to
XO
LOW
Read/Write HIGH to
XO
HIGH
XI
Pulse Width
(2)
XI
Recovery Time
XI
Set-up Time
Min.
—
40
—
10
30
5
5
5
—
40
30
10
18
0
40
30
30
10
40
30
30
10
—
—
—
—
—
30
—
—
—
—
30
—
—
30
10
10
Max.
25
—
30
—
—
—
—
—
20
—
—
—
—
—
—
—
—
—
—
—
—
—
40
40
40
30
30
—
30
30
40
40
—
30
30
—
—
—
Commercial
IDT7203L35
IDT7204L35
IDT7205L35
IDT7206L35
IDT7207L35
IDT7208L35
Min.
—
45
—
10
35
5
10
5
—
45
35
10
18
0
45
35
35
10
45
35
35
10
—
—
—
—
—
35
—
—
—
—
35
—
—
35
10
15
Max.
22.22
—
35
—
—
—
—
—
20
—
—
—
—
—
—
—
—
—
—
—
—
—
45
45
45
30
30
—
30
30
45
45
—
35
35
—
—
—
Military
IDT7203L40
Commercial
IDT7203L50
IDT7204L50
IDT7205L50
IDT7206L50
IDT7207L50
Min.
—
65
—
15
50
10
15
5
—
65
50
15
30
5
65
50
50
15
65
50
50
15
—
—
—
—
—
50
—
—
—
—
50
—
—
50
10
15
Max.
15
—
50
—
—
—
—
—
30
—
—
—
—
—
—
—
—
—
—
—
—
—
65
65
65
45
45
—
45
45
65
65
—
50
50
—
—
—
Unit
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Min.
—
50
—
10
40
5
10
5
—
50
40
10
20
0
50
40
40
10
50
40
40
10
—
—
—
—
—
40
—
—
—
—
40
—
—
40
10
15
Max.
20
—
40
—
—
—
—
—
25
—
—
—
—
—
—
—
—
—
—
—
—
—
50
50
50
35
35
—
35
35
50
50
—
40
40
—
—
—
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.
5
DSP 与 ARM 处理器
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
