P4C168, P4C169, P4C170
P4C168, P4C169, P4C170
ULTRA HIGH SPEED 4K x 4
STATIC CMOS RAMS
FEATURES
Full CMOS, 6T Cell
Fully TTL Compatible, Common I/O Ports
Three Options
High Speed (Equal Access and Cycle Times)
– 12/15/20/25ns (Commercial)
– 20/25/35ns (P4C168 Military)
– P4C168 Low Power Standby Mode
– P4C169 Fast Chip Select Control
– P4C170 Fast Chip Select, Output Enable
Controls
Low Power Operation (Commercial)
– 715 mW Active
– 193 mW Standby (TTL Input) P4C168
– 83 mW Standby (CMOS Input) P4C168
Standard Pinout (JEDEC Approved)
– P4C168: 20-pin DIP, SOJ and SOIC
– P4C169: 20-pin DIP and SOIC
– P4C170: 22-pin DIP
Single 5V±10% Power Supply
DESCRIPTION
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.
TheP4C168, P4C169andP4C170areafamilyof16,384-
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
consumptionisonly83mWinthismode. BoththeP4C169
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-
natedatabuscontention.TheRAMsoperatefromasingle
5V ± 10% tolerance power supply.
TheP4C168andP4C169areavailablein20-pin(P4C170
in 22-pin) 300 mil DIP packages providing excellent board
leveldensities. TheP4C168isalsoavailablein20-pin300
mil SOIC and SOJ packages.
The P4C169 is also available in a 20-pin 300 mil SOIC
package. TheP4C170isalsoavailableina22-pin300mil
SOJ package.
FUNCTIONAL BLOCK DIAGRAM
PIN CONFIGURATIONS
A
16,384-BIT
ROW
(7)
MEMORY
ARRAY
SELECT
A
A
A
A
A
A
A
A
1
2
3
4
20
19
18
17
V
A
A
A
A
A
A
A
A
A
A
A
A
1
2
3
4
22
21
20
19
V
A
A
A
A
0
1
CC
11
0
1
CC
11
A
2
3
4
5
10
9
2
3
4
5
10
9
I/O1
I/O2
I/O3
I/O4
INPUT
DATA
COLUMN I/O
5
6
7
8
16
15
14
13
5
6
7
8
18
17
16
15
8
8
CONTROL
I/O
NC
I/O
4
I/O
6
7
3
6
7
4
I/O
I/O
3
POWER
DOWN
2
COLUMN
SELECT
9
12
11
I/O
9
14
13
12
I/O
2
CE, CS
CS
OE
1
GND
10
10
11
I/O
1
WE
GND
WE
or
CE
CS
P4C168
DIP (P2, D2) DIP (P2)
SOIC (S2)
SOJ (J2)
P4C169
P4C170
DIP (P3)
TOP VIEW
A
A
P4C168
ONLY
WE
OE
(5)
SOIC (S2)
NOTES: CE USED ON P4C168 ALSO FOR POWER DOWN FUNCTIONS
CE USED ON P4C169 FAST CHIP SELECT
TOP VIEW
OE OUTPUT ENABLE FUNCTION ON P4C170 ONLY
Means Quality, Service and Speed
1Q97
33