SN54HC590A Datasheet (Texas Instruments)

SN54HC590A, 8-BIT BINARY COUNTER

D 2-V to 6-V VCC Operation D High-Current 3-State Parallel Register Outputs Can Drive Up To 15 LSTTL Loads D Low Power Consumption, 80-µA Max ICC D Typical tpd = 14 ns SN54HC590A .

J OR W PACKAGE SN74HC590A .

D, DW, OR N PACKAGE (TOP VIEW) QB 1 QC 2 QD 3 QE 4 QF 5 QG 6 QH 7 GND 8 16 VCC 15 QA 14 OE 13 RCLK 12 CCKEN 11 CCLK 10 CCLR 9 RCO SN54HC590A, SN74HC590A 8ĆBIT BINARY COUNTERS WITH 3ĆSTATE OUTPUT REGISTERS SCLS039F DECEMBER 1982 REVISED SEPTEMBER 2003 D ±6-mA O

SN54HC590A Features

* direct clear (CCLR) and count-enable (CCKEN) inputs. A ripple-carry output (RCO) is provided for cascading. Expansion is accomplished easily for two stages by connecting RCO of the first stage to CCKEN of the second stage. Cascading for larger count chains can be accomplished by connecting RCO of ea