LS7062

LSI/CSI UL ® LS7060/7062 (631) 271-0400 FAX (631) 271-0405 LSI Computer Systems, Inc. 1235 Walt Whitman Road, Melville, NY 11747 A3800 32 BIT/DUAL 16 BIT BINARY UP COUNTER WITH BYTE MULTIPLEXED THREE-STATE OUTPUTS FEATURES: DC to 15 MHz Count Frequency Byte Multiplexer DC to 1 MHz Scan Frequency +4.75V to +5.25V Operation (VDD-VSS) Three-State Data Outputs, Bus and TTL Compatible Inputs TTL and CMOS Compatible Unique Cascade Feature Allows Multiplexing of Successive Bytes of Data in Sequence in Multiple Counter Systems Low Power Dissipation LS7060, LS7062 (DIP); LS7060-S, LS7062-S (SOIC) See Figures 1 and 2 DESCRIPTION: The LS7060/LS7062 is a monolithic, ion implanted MOS Silicon Gate, 32 bit/dual 16 bit up counter. The IC includes latches, multiplexer, eight three-state binary data output drivers and output cascading logic. DESCRIPTION OF OPERATION: 32 (16) BIT BINARY UP COUNTER - LS7060 (LS7062) The 32(16) bit static ripple through counter increments on the negative edge of the input count pulse. Maximum ripple time is 4µs (2µs) - transition count of 32(16) ones to 32(16) zeros. Guaranteed count frequency is DC to 15MHz. See Figure 9A(9B) for Block Diagram. COUNT, ALT COUNT (LS7060) Input count pulses to the 32 bit counter may be applied through either of these two inputs. The ALT COUNT input circuitry contains a Schmitt trigger network which allows proper counting with "infinitely" long clock edges. A high applied to either of these two inputs inhibit...