IDT72205LB/72215LB/72225LB/72235LB/72245LB CMOS SyncFIFO™
256 x 18, 512 x 18, 1,024 x 18, 2,048 x 18 and 4,096 x 18
Commercial And Industrial Temperature Ranges
ABSOLUTE MAXIMUM RATINGS
Symbol
V
TERM
T
STG
I
OUT
Rating
Terminal Voltage
with respect to GND
Storage
Temperature
DC Output Current
Com'l & Ind'l
–0.5 to +7.0
–55 to +125
–50 to +50
Unit
V
°C
mA
RECOMMENDED DC
OPERATING CONDITIONS
Symbol
Parameter
Supply Voltage
V
CC
Com'l/Ind'l
GND
V
IH
V
IL
(1)
T
A
T
A
Supply Voltage
Input High Voltage
Com'l/Ind'l
Input Low Voltage
Com'l/Ind'l
Operating Temperature
Commercial
Operating Temperature
Industrial
Min.
4.5
0
2.0
—
0
–40
Typ.
5.0
0
—
—
—
—
Max. Unit
5.5
V
0
—
0.8
70
85
V
V
V
°C
°C
2766 tbl 03
NOTE:
2766 tbl 02
1. Stresses greater than those listed under ABSOLUTE MAXIMUM RAT-
INGS 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.
NOTE:
1. 1.5V undershoots are allowed for 10ns once per cycle.
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 )
IDT72205LB
IDT72215LB
IDT72225LB
IDT72235LB
IDT72245LB
Commercial and Industrial
(1)
t
CLK
= 10, 15, 25 ns
Min.
Typ.
–1
–10
2.4
—
—
—
—
—
—
—
—
—
Symbol
I
LI
(2)
I
LO
(3)
Parameter
Input Leakage Current (any input)
Output Leakage Current
Output Logic “1” Voltage, I
OH
= –2 mA
Output Logic “0” Voltage, I
OL
= 8 mA
Active Power Supply Current
Standby Current
Max.
1
10
—
0.4
60
5
Unit
µA
µA
V
V
mA
mA
V
OH
V
OL
I
CC1
(4,5,6)
I
CC2
(4,7)
2766 tbl 04
NOTES:
1. Industrial temperature range product for the 15ns and the 25 ns speed grade is available as a standard device.
2. Measurements with 0.4
≤
V
IN
≤
V
CC
.
3.
OE
≥
V
IH,
0.4
≤
V
OUT
≤
V
CC
.
4. Tested with outputs open (I
OUT
= 0).
5. RCLK and WCLK toggle at 20 MHZ and data inputs switch at 10 MHz.
6. For the 72205/72215/72225 the typical I
CC1
= 1.81 + 1.12*f
S
+ 0.02*C
L
*f
S
(in mA);
for the 72235/72245 the typical I
CC1
= 2.85 + 1.30*f
S
+ 0.02*C
L
*f
S
(in mA).
These equations are valid under the following conditions:
V
CC
= 5V, T
A
= 25°C, f
S
= WCLK frequency = RCLK frequency (in MHz, using TTL levels), data switching at f
S
/2, C
L
= capacitive load (in pF).
7. All Inputs = V
CC
- 0.2V or GND + 0.2V, except RCLK and WCLK, which toggle at 20 MHz.
CAPACITANCE
(T
A
= +25°C, f = 1.0MHz)
Symbol
C
IN
(2)
C
OUT
(1,2)
Parameter
(1)
Input
Capacitance
Output
Capacitance
Conditions
V
IN
= 0V
V
OUT
= 0V
Max.
10
10
Unit
pF
pF
2766 tbl 05
AC TEST CONDITIONS
Input Pulse Levels
Input Rise/Fall Times
Input Timing Reference Levels
Output Reference Levels
Output Load
GND to 3.0V
3ns
1.5V
1.5V
See Figure 1
2766 tbl 06
NOTES:
1. With output deselected, (
OE
≥
V
IH
).
2. Characterized values, not currently tested.
4
IDT [ INTEGRATED DEVICE TECHNOLOGY ]
