P4C168 Datasheet, PDF (1/8 Pages) List of Unclassifed Manufacturers – ULTRA HIGH SPEED 4K x 4 STATIC CMOS RAMS

P4C168, P4C169, P4C170
ULTRA HIGH SPEED 4K x 4
STATIC CMOS RAMS
P4C168, P4C169, P4C170
FEATURES
Full CMOS, 6T Cell
High Speed (Equal Access and Cycle Times)
– 12/15/20/25ns (Commercial)
– 20/25/35ns (P4C168 Military)
Low Power Operation (Commercial)
– 715 mW Active
– 193 mW Standby (TTL Input) P4C168
– 83 mW Standby (CMOS Input) P4C168
Single 5V±10% Power Supply
Fully TTL Compatible, Common I/O Ports
Three Options
– P4C168 Low Power Standby Mode
– P4C169 Fast Chip Select Control
– P4C170 Fast Chip Select, Output Enable
Controls
Standard Pinout (JEDEC Approved)
– P4C168: 20-pin DIP, SOJ and SOIC
– P4C169: 20-pin DIP and SOIC
– P4C170: 22-pin DIP
DESCRIPTION
The P4C168, P4C169 and P4C170 are a family of 16,384-
bit ultra high-speed static RAMs organized as 4K x 4. All
three devices have common input/output ports.The
P4C168 enters the standby mode when the chip enable
(CE) control goes high; with CMOS input levels, power
consumption is only 83mW in this mode. Both the P4C169
and the P4C170 offer a fast chip select access time that is
only 67% of the address access time. In addition, the
P4C170 includes an output enable (OE) control to elimi-
nate data bus contention. The RAMs operate from a single
5V ± 10% tolerance power supply.
Access times as fast as 12 nanoseconds are available,
permitting greatly enhanced system operating speeds.
CMOS is used to reduce power consumption to a low 715
mW active, 193 mW standby.
The P4C168 and P4C169 are available in 20-pin (P4C170
in 22-pin) 300 mil DIP packages providing excellent board
level densities. The P4C168 is also available in 20-pin 300
mil SOIC and SOJ packages.
The P4C169 is also available in a 20-pin 300 mil SOIC
package. The P4C170 is also available in a 22-pin 300 mil
SOJ package.
FUNCTIONAL BLOCK DIAGRAM
A
(7)
A
ROW
SELECT
I/O₁
I/O₂
INPUT
DATA
I/O₃
CONTROL
I/O₄
POWER
DOWN
16,384-BIT
MEMORY
ARRAY
COLUMN I/O
COLUMN
SELECT
CE or CS
WE
OE
A
A
P4C168
ONLY
(5)
NOTES: CE USED ON P4C168 ALSO FOR POWER DOWN FUNCTIONS
CE USED ON P4C169 FAST CHIP SELECT
OE OUTPUT ENABLE FUNCTION ON P4C170 ONLY
PIN CONFIGURATIONS
A₀ 1
A₁ 2
A₂ 3
A₃ 4
A₄ 5
A₅ 6
A₆ 7
A₇ 8
CE, CS 9
GND 1 0
20 V _{C C}
19 A ₁₁
18 A _{1 0}
17 A ₉
16 A ₈
15 I/O₄
14 I/O₃
13 I/O₂
12 I/O₁
11 _WE
P4C168
P4C169
DIP (P2, D2) DIP (P2)
SOIC (S2) SOIC (S2)
SOJ (J2)
TOP VIEW
A₀
A₁
A₂
A₃
A₄
A₅
A₆
A₇
CS
OE
GND
1
22
2
21
3
20
4
19
5
18
6
17
7
16
8
15
9
14
10
13
11
12
P4C170
DIP (P3)
TOP VIEW
V _CC
A ₁₁
A ₁₀
A₉
A₈
NC
I/O₄
I/O₃
I/O₂
I/O₁
WE
Means Quality, Service and Speed
1Q97
33