SN54LS170 Datasheet | Motorola Semiconductor

features 3-state outputs. 4 x 4 REGISTER FILE OPEN-COLLECTOR LOW POWER SCHOTTKY - - - - - Simultaneous Read/ Write Operation Expandable to 512 Words of n-Bits Typical Access Time of 20 ns Low Leakage Open-Collector Outputs for Expansion Typical Power Dissipation of 125 m W J SUFFIX CERAMIC CASE 620-09 16 1 CONNECTION DIAGRAM DIP (TOP VIEW) VCC 16 D1 15 WA 14 WB 13 EW 12 ER 11 Q1 10 Q2 9 NOTE: The Flatpak version has the same pinouts (Connection Diagram) as the Dual In-Line Package. 16 1 N SUFFIX PLASTIC CASE 648-08 16 1 D SUFFIX SOIC CASE 751B-03 1 D2 2 D3 3 D4 4 RB 5 RA 6 Q4 7 Q3 8 GND ORDERING INFORMATION SN54LSXXXJ SN74LSXXXN SN74LSXXXD Ceramic Plastic SOIC PIN NAMES LOADING (Note a) HIGH LOW 0.25 U.L. 0.25 U.L. 0.5 U.L. 0.25 U.L. 0.5 U.L. 5 (2.5) U.L. LOGIC SYMBOL 12 14 13 5 4 WA EW WB RA RB ER 11 15 1 2 3 D1 D2 D3 D4 Q1 Q2 Q3 Q4 10 9 7 6 D1 - D4 WA, WB EW RA, RB ER Q1 - Q4 Data Inputs Write Address Inputs Write Enable (Active LOW) Input Read Address Inputs Read Enable (Active LOW) Input Outputs (Note b) 0.5 U.L. 0.5 U.L. 1.0 U.L. 0.5 U.L. 1.0 U.L. Open-Collector NOTES: a. 1 TTL Unit Load (U.L.) = 40 µA HIGH/1.6 m A LOW. b. The Output LOW drive factor is 2.5 U.L. for Military (54) and 5 U.L. for mercial (74) b. Temperature Ranges. The Output HIGH drive must be supplied by an external resistor to VCC. VCC = PIN 16 GND = PIN 8 FAST AND LS TTL DATA 5-1 SN54/74LS170 LOGIC...