IDT IDT71V416S20Y

ADVANCE
INFORMATION
IDT71V416
3.3V CMOS STATIC RAM
4 MEG (256K x 16-BIT)
Integrated Device Technology, Inc.
FEATURES:
DESCRIPTION:
• 256K x 16 advanced high-speed CMOS Static RAM
• JEDEC Center Power /GND pinout for reduced noise
• Equal access and cycle times
— 12/15/20ns
• Single 3.3V power supply
• One Chip Select plus one Output Enable pin
• Bidirectional data inputs and outputs directly
TTL-compatible
• Low power consumption via chip deselect
• Upper and Lower Byte Enable Pins
• Available in 44-pin, 400 mil plastic SOJ package
The IDT71V416 is a 4,194,304-bit high-speed Static RAM
organized as 256K x 16. It is fabricated using IDT’s highperfomance, high-reliability CMOS technology. This state-ofthe-art technology, combined with innovative circuit design
techniques, provides a cost-effective solution for high-speed
memory needs.
The IDT71V416 has an output enable pin which operates
as fast as 6ns, with address access times as fast as 12ns. All
bidirectional inputs and outputs of the IDT71V416 are TTLcompatible and operation is from a single 3.3V supply. Fully
static asynchronous circuitry is used, requiring no clocks or
refresh for operation.
The IDT71V416 is packaged in a 44-pin, 400mil Plastic
SOJ.
FUNCTIONAL BLOCK DIAGRAM
OE#
A0 - A17
Output
Enable
Buffer
Address
Buffers
Row / Column
Decoders
8
CE#
Chip
Enable
Buffer
8
4,194,304-bit
Memory
Array
WE#
16
Write
Enable
Buffer
Sense
Amps
and
Write
Drivers
8
8
High
Byte
Output
Buffer
High
Byte
Write
Buffer
Low
Byte
Output
Buffer
Low
Byte
Write
Buffer
8
I/O 15
8
I/O 8
8
8
I/O 7
I/O 0
BHE#
Byte
Enable
Buffers
BLE#
3624 drw 01
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
COMMERCIAL TEMPERATURE RANGE
JULY 1996
1996 Integrated Device Technology, Inc.
3624/-
10.1
1
IDT71V416
3.3V CMOS STATIC RAM 4 MEG (256K x 16-BIT)
COMMERCIAL TEMPERATURE RANGE
PIN CONFIGURATION
A4
A3
A2
A1
A0
CE
I/O 0
I/O 1
I/O 2
I/O 3
VDD
VSS
I/O 4
I/O 5
I/O 6
I/O 7
WE
A15
A14
A13
A12
A16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
PIN DESCRIPTION
S044-1
A0 – A17
A5
A6
A7
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
Address Inputs
Input
Chip Select
Input
Write Enable
Input
Output Enable
Input
High Byte Enable
Input
Low Byte Enable
Input
I/O0 - I/O15
Data Input/Output
I/O
VDD
3.3V Power
VSS
Ground
CS
WE
OE
BHE
BLE
OE
BHE
BLE
I/O 15
I/O 14
I/O 13
I/O 12
Power
Gnd
VSS
VDD
I/O 11
I/O 10
I/O 9
3624 tbl 01
I/O 8
NC
A8
A9
A10
A11
A17
3624 drw 02
SOJ
TOP VIEW
ORDERING INFORMATION
IDT 71V416
Device
Type
S
XX
XXX
Power
Speed
Package
Y
400-mil SOJ (S044-1)
12
15
20
Speed in nanoseconds
3624 drw 03
10.1
2