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參數(shù)資料
| 型號(hào)： | CY7C4425-25ASI |
| 廠商： | CYPRESS SEMICONDUCTOR CORP |
| 元件分類： | DRAM |
| 英文描述： | 64/256/512/1K/2K/4K x18 Low-Voltage Synchronous FIFOs |
| 中文描述： | 64 X 18 OTHER FIFO, 15 ns, PQFP64 |
| 封裝： | 10 X 10 MM, TQFP-64 |
| 文件頁(yè)數(shù)： | 4/25頁(yè) |
| 文件大?。?/td> | 409K |
| 代理商： | CY7C4425-25ASI |
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CY7C4425/4205/4215
CY7C4225/4235/4245
4
Maximum Ratings
(Above which the useful life may be impaired. For user guide-
lines, not tested.)
Storage Temperature
....................................
65
°
C to +150
°
C
Ambient Temperature with
Power Applied
.................................................
55
°
C to +125
°
C
Supply Voltage to Ground Potential
.................
0.5V to +7.0V
DC Voltage Applied to Outputs
in High Z State
.....................................................
0.5V to +7.0V
DC Input Voltage
.................................................
3.0V to +7.0V
Electrical Characteristics
Over the Operating Range
[2]
Output Current into Outputs (LOW)............................. 20 mA
Static Discharge Voltage ...........................................>2001V
(per MIL-STD-883, Method 3015)
Latch-Up Current.....................................................>200 mA
RXI
Read Expansion
Input
I
Cascaded - Connected to RXO of previous device.
Not Cascaded - Tied to V
SS
.
Cascaded - Connected to RXI of next device.
RXO
Read Expansion
Output
O
RS
Reset
I
Resets device to empty condition. A reset is required before an initial read or write
operation after power-up.
OE
Output Enable
I
When OE is LOW, the FIFO’s data outputs drive the bus to which they are con-
nected. If OE is HIGH, the FIFO’s outputs are in High Z (high-impedance) state.
V
CC
/SMODE
Synchronous
Almost Empty/
Almost Full Flags
I
Dual-Mode Pin
Asynchronous Almost Empty/Almost Full flags - tied to V
CC
.
Synchronous Almost Empty/Almost Full flags - tied to V
SS
.
(Almost Empty synchronized to RCLK, Almost Full synchronized to WCLK.)
Pin Definitions
(continued)
Signal Name
Description
I/O
Function
Operating Range
Range
Ambient
Temperature
0
°
C to +70
°
C
40
°
C to +85
°
C
V
CC
Commercial
Industrial
[1]
5V
±
10%
5V
±
10%
Parameter
Description
Test Conditions
7C42X5-10
Min.
7C42X5-15
Min.
7C42X5-25
Min.
7C42X5-35
Min.
Max.
Max.
Max.
Max.
Unit
V
OH
Output HIGH Voltage
V
CC
= Min.,
I
OH
=
2.0 mA
V
CC
= Min.,
I
OL
= 8.0 mA
2.4
2.4
2.4
2.4
V
V
OL
Output LOW Voltage
0.4
0.4
0.4
0.4
V
V
IH[3]
V
IL[3]
I
IX
Input HIGH Voltage
2.2
3.0
10
V
CC
0.8
2.2
3.0
10
V
CC
0.8
2.2
3.0
10
V
CC
0.8
2.2
3.0
10
V
CC
0.8
V
Input LOW Voltage
V
μ
A
Input Leakage
Current
V
CC
= Max.
+10
+10
+10
+10
I
OS[4]
Output Short
Circuit Current
V
CC
= Max.,
V
OUT
= GND
OE > V
IH
,
V
SS
< V
O
< V
CC
V
CC
= Max.,
I
OUT
= 0 mA
90
90
90
90
mA
I
OZL
I
OZH
I
CC2[5]
Output OFF,
High Z Current
10
+10
10
+10
10
+10
10
+10
μ
A
Operating Current
Com’l
45
45
45
45
mA
Ind
50
50
50
50
mA
I
SB[6]
Standby Current
V
CC
= Max.,
I
OUT
= 0 mA
Com’l
10
10
10
10
mA
Ind
15
15
15
15
mA
Notes:
1.
2.
3.
T
is the “instant on” case temperature.
See the last page of this specification for Group A subgroup testing information.
The V
and V
specifications apply for all inputs except WXI, RXI. The WXI, RXI pin is not a TTL input. It is connected to either RXO, WXO of the
previous device or V
.
Test no more than one output at a time for not more than one second.
Input signals switch from 0V to 3V with a rise/fall time less than 3 ns, clocks and clock enables switch at 20 MHz, while the data inputs switch at 10 MHz.
Outputs are unloaded.
All input signals are connected to V
CC
. All outputs are unloaded.
4.
5.
6.
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