L7C108 L7C109 128K x 8 Static RAM
FEATURES
128K x 8 Static RAM with Chip Select Powerdown, Output Enable and Single or D...
L7C108 L7C109 128K x 8 Static RAM
FEATURES
128K x 8 Static RAM with Chip Select Powerdown, Output Enable and Single or Dual Chip Selects High Speed — to 15 ns maximum Operational Power, -L Version Active: 140 mA at 15 ns Standby: 1 mA max Data Retention at 2 V for Battery Backup Operation Screened to MIL-STD-883, Class B or to SMD 5962-89598 Package Styles Available: xSLQ&HUDPLFPLO',3 ' xSLQ&HUDPLF/&& . xSLQ&HUDPLF62- < xSLQ4XDG&HUDPLF/&& .$
Pin Configuration
32-pin Ceramic DIP 32-pin Ceramic SOJ
NC A16 A14 A12 A7 A6 A5 A4 A3 A2 A1 A0 DQ1 DQ2 DQ3 VSS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 VCC A15 CE2 WE A13 A8 A9 A11 OE A10 CE DQ8 DQ7 DQ6 DQ5 DQ4
32-pin Quad CLCC
A2 A1 A0 NC VCC A16 NC
32-pin Ceramic LCC
NC A16 A14 A12 A7 A6 A5 A4 A3 A2 A1 A0 DQ1 DQ2 DQ3 VSS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 VCC A15 CE2 WE A13 A8 A9 A11 OE A10 CE DQ8 DQ7 DQ6 DQ5 DQ4
4
3
2
1 32 31 30 29 28 27 26 25 24 23 22 21
A7 A6 A5 A4 A3 A2 A1 A0 DQ1
5 6 7 8 9 10 11 12 13
Top View
WE A13 A8 A9 A11 OE A10 CE1 DQ8
14 15 16 17 18 19 20
OVERVIEW
The L7C108 and L7C109 are high-performance, low-power
CMOS static RAMs. The storage circuitry is organized as 131,072 words by 8 bits per word. The 8 Data In and Data Out signals share I/O pins. The L7C108 has a single activelow Chip Enable. The L7C109 has two &KLS (QDEOHV RQH DFWLYHORZ 7KHVH dev...
