SM5839A

SM5839A NIPPON PRECISION CIRCUITS INC. High-Speed Variable-Length Shift Register OVERVIEW The SM5839A is an 8-bit variable-length shift resister. The input pins can be configured to function as a 2 to 128-step shift resister. The shift clock has a maximum frequency of 54 MHz, making it ideal for high-speed digital signal processing. PACKAGE DIMENSIONS Unit: mm 28-pin DIP (SM5839AP) 13.72 ± 0.1 15.56 ± 0.3 FEATURES s s s s s s s s s PINOUT Top view 0.5755 TYP. 9.8 ± 0.2 5.6 ± 0.2 7.6 ± 0.2 2 to 128-step selectable variable-length shift resister Static circuitry 8-bit (byte) word length Selectable circulating/non-circulating storage 54 MHz maximum operating clock frequency (standard-voltage specification) Supply voltage 5.0 ± 0.5 V (standard-voltage specification) 2.7 to 4.5 V (low-voltage specification) TTL-compatible input/outputs Molybdenum-gate CMOS Package 28-pin DIP (SM5839AP) 28-pin VSOP (SM5839AV) 1.52 ± 0.05 3.81 ± 0.1 0.83 ± 0.3 3.18 ± 0.1 2.54 0.46 ± 0.05 28-pin VSOP (SM5839AV) 4.64 ± 0.3 0 10 + 0.1 0.15 − 0.05 0.10 ± 0.05 1.15 ± 0.1 + 0.1 0.22 − 0.05 0.5 0.2 0.65 DIN0 DIN1 DIN2 DIN3 DIN4 DIN5 DIN6 DIN7 S6 1 2 3 4 28 27 26 25 VDD ENRC OE DOUT0 DOUT1 DOUT2 DOUT3 DOUT4 DOUT5 DOUT6 DOUT7 S0 S1 S2 ORDERING INFORMATION Device SM5839AP SM5839AV Package 28-pin DIP 28-pin VSOP 5 6 7 8 9 24 23 22 21 20 19 18 17 16 15 S5 10 S4 11 S3 12 CLK 13 VSS 14 NIPPON PRECISION CIRCUITS—1 0.25 ± 0.05 36.83 ± 0.1 16.38 ± 0.6 SM5839A SM5839A BLOCK D...