P4C1681I-sspt ETC, P4C1681I-sspt Datasheet

P4C1681I-sspt

Manufacturer Part Number

P4C1681I-sspt

Description

ULTRA HIGH SPEED 4K x 4 STATIC CMOS RAMS

Manufacturer

ETC

Datasheet

1.P4C1681I-SSPT.pdf (6 pages)

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P4C1681, P4C1682

ULTRA HIGH SPEED 4K x 4

STATIC CMOS RAMS

FEATURES

DESCRIPTION

The P4C1681 and P4C1682 are 16,384-bit (4K x 4) ultra

high speed static RAMs similar to the P4C168, but with

separate

transparent write operation; the outputs of the P4C1682

are in high impedance during the write cycle. All devices

have low power standby modes. The RAMs operate from

a single 5V

Access times as fast as 12 nanoseconds are available,

permitting greatly enhanced system operating speeds.

FUNCTIONAL BLOCK DIAGRAM

Full CMOS, 6T Cell

High Speed (Equal Access and Cycle Times)

– 12/15/20/25 ns (Commercial)

– 20/25/35ns (P4C1682 Military)

Low Power Operation (Commercial)

– 715 mW Active – 12, 15

– 550 mW Active – 20/25/35

– 193 mW Standby (TTL Input)

– 83 mW Standby (CMOS Input)

Single 5V

(7)

data

10% tolerance power supply.

10%Power Supply

P4C1682

P4C1681

I/O

CONTROL

SELECT

POWER

INPUT

DOWN

DATA

ROW

pins. The P4C1681 features a

COLUMN I/O

16,384-BIT

MEMORY

COLUMN

ARRAY

SELECT

(5)

PIN CONFIGURATIONS

CMOS is used to reduce power consumption to a low 715

mW active, 193 mW standby. For the P4C1682 and

P4C1681, power is only 83 mW standby with CMOS input

levels.

The P4C1681 and P4C1682 are available in 24-pin 300

mil DIP and SOIC packages providing excellent board

level densities. The P4C1682 is also available in a 28-pin

LCC package.

DIP (P4,D4), SOIC (S4), SOJ (J4)

GND

Separate Inputs and Outputs

– P4C1681 Input Data at Outputs during Write

– P4C1682 Outputs in High Z during Write

Fully TTL Compatible Inputs and Outputs

Standard Pinout (JEDEC Approved)

– 24-Pin 300 mil DIP

– 24-Pin 300 mil SOIC

– 24-Pin 300 mil SOJ

– 24-Pin CERDIP

– 28-Pin LCC (450 mil x 450 mil)

A 0

A 1

A 2

A 3

A 4

A 5

A 6

A 7

I 1

I 2

TOP VIEW

V CC

A 11

A 10

A 9

A 8

I 4

I 3

O 4

O 3

O 2

O 1

Means Quality, Service and Speed

A 4

A 5

A 6

A 7

I 1

1 2

1 0

1 3 1 4 1 5

LCC (L5-1)

TOP VIEW

1 6 1 7

2 8

2 7

2 6

1 8

A 9

A 8

I 4

I 3

O 4

1Q97

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P4C1681I-sspt Summary of contents

Page 1

P4C1681, P4C1682 ULTRA HIGH SPEED STATIC CMOS RAMS FEATURES Full CMOS, 6T Cell High Speed (Equal Access and Cycle Times) – 12/15/20/25 ns (Commercial) – 20/25/35ns (P4C1682 Military) Low Power Operation (Commercial) – 715 mW Active – ...

Page 2

P4C1681, P4C1682 1 MAXIMUM RATINGS Symbol Parameter V Power Supply Pin with CC Respect to GND Terminal Voltage with V Respect to GND TERM (up to 7.0V) T Operating Temperature A RECOMMENDED OPERATING TEMPERATURE AND SUPPLY VOLTAGE Ambient Grade(2) GND ...

Page 3

POWER DISSIPATION CHARACTERISTICS Over recommended operating temperature and supply voltage Symbol Parameter I Dynamic Operating CC Current – 12 Dynamic Operating CC Current – 20, 25 Standby Power Supply SB Current (TTL Input Levels) I Standby ...

Page 4

P4C1681, P4C1682 AC ELECTRICAL CHARACTERISTICS—READ CYCLE ( 10%, All Temperature Ranges) CC Symbol Parameter Min Max t Read Cycle Time Address Access AA Timens t Chip Enable AC Access Time t Output Hold from OH ...

Page 5

AC ELECTRICAL CHARACTERISTICS—WRITE CYCLE ( 10%, All Temperature Ranges) CC Symbol Parameter Min Max t Write Cycle Time Chip Enable Time End of Write t Address Valid End of ...

Page 6

P4C1681, P4C1682 PACKAGE SUFFIX Package Description Suffix P Plastic DIP, 300 mil wide standard J Plastic SOJ D CERDIP, 300 mil wide standard S Small Outline IC L LCC Package P4C 1681 P4C 1682 l = Ultra-low standby power designator ...

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