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HM1-6551883 fiches techniques PDF

Intersil Corporation - 256 x 4 CMOS RAM

Numéro de référence HM1-6551883
Description 256 x 4 CMOS RAM
Fabricant Intersil Corporation 
Logo Intersil Corporation 





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HM1-6551883 fiche technique
HM-6551/883
March 1997
256 x 4 CMOS RAM
Features
Description
• This Circuit is Processed in Accordance to MIL-STD-
883 and is Fully Conformant Under the Provisions of
Paragraph 1.2.1.
• Low Power Standby . . . . . . . . . . . . . . . . . . . . 50µW Max
• Low Power Operation . . . . . . . . . . . . . 20mW/MHz Max
• Fast Access Time. . . . . . . . . . . . . . . . . . . . . . 220ns Max
• Data Retention . . . . . . . . . . . . . . . . . . . . . . . .at 2.0V Min
• TTL Compatible Input/Output
• High Output Drive - 1 TTL Load
• Internal Latched Chip Select
• High Noise Immunity
• On-Chip Address Register
• Latched Outputs
• Three-State Output
The HM-6551/883 is a 256 x 4 static CMOS RAM fabricated
using self-aligned silicon gate technology. Synchronous cir-
cuit design techniques are employed to achieve high perfor-
mance and low power operation. On chip latches are
provided for address and data outputs allowing efficient
interfacing with microprocessor systems. The data output
buffers can be forced to a high impedance state for use in
expanded memory arrays.
The HM-6551/883 is a fully static RAM and may be main-
tained in any state for an indefinite period of time. Data
retention supply voltage and supply current are guaranteed
over temperature.
Ordering Information
PACKAGE
CERDIP
TEMPERATURE RANGE
220ns
-55oC to +125oC
HM-6551B/883
300ns
HM1-6551/883
PKG. NO.
F22.4
Pinout
HM-6551/883 (CERDIP)
TOP VIEW
A3 1
A2 2
A1 3
A0 4
A5 5
A6 6
A7 7
GND 8
D0 9
Q0 10
D1 11
22 VCC
21 A4
20 W
19 S1
18 E
17 S2
16 Q3
15 D3
14 Q2
13 D2
12 Q1
PIN DESCRIPTION
A Address Input
E Chip Enable
W Write Enable
S Chip Select
D Data Input
Q Data Output
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207 | Copyright © Intersil Corporation 1999
6-101
File Number 2988.1

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