CY7C185A-35DMB Cypress Semiconductor Corp, CY7C185A-35DMB Datasheet

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CY7C185A-35DMB

Manufacturer Part Number
CY7C185A-35DMB
Description
Manufacturer
Cypress Semiconductor Corp
Datasheet

Specifications of CY7C185A-35DMB

Density
64Kb
Access Time (max)
35ns
Operating Supply Voltage (typ)
5V
Package Type
DIP
Operating Temp Range
-55C to 125C
Supply Current
125mA
Operating Supply Voltage (min)
4.5V
Operating Supply Voltage (max)
5.5V
Operating Temperature Classification
Military
Mounting
Through Hole
Pin Count
28
Word Size
8b
Lead Free Status / Rohs Status
Not Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
CY7C185A-35DMB
Manufacturer:
CYPRESS
Quantity:
301
Part Number:
CY7C185A-35DMB
Manufacturer:
TI
Quantity:
125
Part Number:
CY7C185A-35DMB
Manufacturer:
CYP
Quantity:
624
Features
Functional Description
The CY7C185A is a high-performance CMOS static RAM or-
ganized as 8192 words by 8 bits. Easy memory expansion is
provided by an active LOW Chip Enable (CE
Chip Enable (CE
Selection Guide
Cypress Semiconductor Corporation
Maximum Access Time (ns)
Maximum Operating Current (mA) Military
Maximum Standby Current (mA)
Note:
• High speed
• CMOS for optimum speed/power
• Low active power
• Low standby Power
• TTL-compatible inputs and outputs
• Easy memory expansion with CE
• Automatic power-down when deselected
1.
Logic Block Diagram
CE
CE
WE
OE
— 20 ns
— 743 mW
— 220 mW
1
2
For commercial specifications, see the CY7C185 data sheet.
A
A
A
A
A
A
A
A
1
2
3
4
5
6
7
8
2
), an active LOW Output Enable (OE), and
[1]
COLUMN DECODER
INPUT BUFFER
ARRA Y
8K x 8
Military
1
, CE
2
1
and OE features
), an active HIGH
POWER
DOWN
3901 North First Street
7C185A–20
40/20
135
20
three-state drivers. The device has an automatic power-down
feature (CE
when deselected. The CY7C185A is in the standard
300-mil-wide DIP package and leadless chip carrier.
Writing to the device is accomplished when the Chip Enable
one (CE
the Chip Enable two (CE
Data on the eight I/O pins (I/O
memory location specified on the address pins (A
A
Reading the device is accomplished by taking Chip Enable
one (CE
Enable (WE) and Chip Enable two (CE
conditions, the contents of the memory location specified on
the address pins will appear on the I/O pins.
The I/O pins remain in a high-impedance state when Chip En-
able one (CE
able (WE) or Chip Enable two (CE
A die coat is used to ensure alpha immunity.
12
).
C185A–1
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
7C185A–25
1
1
) and Write Enable (WE) inputs are both LOW, and
) and Output Enable (OE) LOW, while taking Write
0
1
2
3
4
5
6
7
40/20
Pin Configurations
125
1
San Jose
25
), reducing the power consumption by over 70%
1
) or Output Enable (OE) is HIGH, or Write En-
GND
I/O
I/O
I/O
A
A
A
NC
A
A
A
A
A
A
10
11
12
4
5
6
7
8
9
0
1
2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Top View
DIP
2
8K x 8 Static RAM
) input is HIGH.
C185A–2
7C185A–35
28
27
26
25
24
23
22
21
20
19
18
17
16
15
CA 95134
0
30/20
125
through I/O
35
V
WE
CE
A
A
A
OE
A
CE
I/O
I/O
I/O
I/O
I/O
CC
3
2
1
0
7
6
5
4
3
2
1
2
) is LOW.
I/O
I/O
A
A
A
NC
2
A
A
A
10
11
12
) HIGH. Under these
7
8
9
0
1
CY7C185A
7
4
5
6
7
8
9
10
11
12
) is written into the
1314151617
Top View
October 4, 1999
3 2 1
7C185A–45
LCC
408-943-2600
30/20
125
28
45
0
27
C185A–3
26
25
24
23
22
21
20
19
18
through
CE
A
A
A
OE
A
CE
I/O
I/O
3
2
1
0
2
7
6
1

Related parts for CY7C185A-35DMB

CY7C185A-35DMB Summary of contents

Page 1

... TTL-compatible inputs and outputs • Easy memory expansion with • Automatic power-down when deselected Functional Description The CY7C185A is a high-performance CMOS static RAM or- ganized as 8192 words by 8 bits. Easy memory expansion is provided by an active LOW Chip Enable (CE Chip Enable ( active LOW Output Enable (OE), and 2 ...

Page 2

... GND CC OUT V = Max Military CC OUT Max Military CC 1 IH, Min. Duty Cycle=100% Max –0.3V Military –0.3Vor V 0. CY7C185A [2] ................................................. –0.5V to +7.0V Ambient [3] Temperature V CC – +125 C 5V 10% 7C185A–20 Min. Max. Unit 2.4 0.4 2 –0.5 0.8 –10 +10 –10 +10 –300 mA Military 135 mA Military 40 mA ...

Page 3

... AC Test Loads and Waveforms R1 481 5V OUTPUT OUTPUT 255 INCLUDING INCLUDING JIG AND SCOPE (a) Equivalent to: THÉVENIN EQUIVALENT 167 OUTPUT Test Conditions T = 25° MHz 5. 481 5V 3. 255 GND JIG AND SCOPE C185A–4 (b) 1.73V 3 CY7C185A Max. Unit ALL INPUT PULSES 90% 90% 10% 10 C185A–5 ...

Page 4

... At any given temperature and voltage condition, t 10. Device is continuously selected. OE [7] 7C185A–20 7C185A–25 Min. Max. Min part ( Test Loads. Transition is measured 500 mV from steady-state voltage. is less than t for any given device. HZCE LZCE . CY7C185A 7C185A–35 7C185A–45 Max. Min. Max. Min. Max ...

Page 5

... DOE DATA VALID 50 SCE1 t SCE2 PWE t SD DATA VALID IN HIGH IMPEDANCE LOW, CE HIGH, and WE LOW. Both signals must be LOW to initiate a write and either signal CY7C185A DATA VALID C185A–6 t HZOE t HZCE HIGH IMPEDANCE t PD ICC 50% ISB C185A– LZWE C185A–8 ...

Page 6

... Switching Waveforms (continued) [13, 14, 15] Write Cycle No. 2 (CE Controlled) ADDRESS DATA IN DATA I/O Note: 15 goes HIGH simultaneously with WE HIGH, the output remains in a high-impedance state SCE1 SCE2 PWE t SD DATA VALID IN HIGH IMPEDANCE 6 CY7C185A C185A–9 ...

Page 7

... TYPICAL ACCESS TIME CHANGE vs. OUTPUT LOADING 30.0 25.0 20.0 15.0 10.0 V =4. = 5.0 0.0 0 200 400 600 800 1000 CAPACITANCE (pF) 7 CY7C185A OUTPUT SOURCE CURRENT vs. OUTPUT VOLTAGE 120 100 80 V =5. = 0.0 1.0 2.0 3.0 4.0 OUTPUT VOLTAGE (V) OUTPUT SINK CURRENT vs. OUTPUT VOLTAGE ...

Page 8

... Address Mode Name Deselect/ A4 Power-Down A5 Deselect A6 Read A7 Write A8 Deselect A9 A10 A11 A12 Package Name Package Type D22 28-Lead (300-Mil) CerDIP D22 28-Lead (300-Mil) CerDIP D22 28-Lead (300-Mil) CerDIP D22 28-Lead (300-Mil) CerDIP 8 CY7C185A Address Pin Function Number Operating Range Military Military ...

Page 9

... MILITARY SPECIFICATIONS Group A Subgroup Testing DC Characteristics Parameter Subgroups Max SB1 SB2 Switching Characteristics Parameter Subgroups READ CYCLE 10 10 10, 11 OHA 10, 11 ACE1 10, 11 ACE2 10, 11 DOE WRITE CYCLE 10 10, 11 SCE1 10, 11 SCE2 10, 11 PWE 10 10 Document #: 38–00114–C 9 CY7C185A ...

Page 10

... The inclusion of Cypress Semiconductor products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress Semiconductor against all charges. 28-Lead (300-Mil) CerDIP D22 MIL-STD-1835 D-15 Config. A CY7C185A 51-80032 ...

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