HD74HC589 Datasheet | Hitachi Semiconductor

Description The HD74HC589 is similar in function to the HD74HC597, which is not a 3-state device. This device consists of an 8-bit storage latch which feeds parallel data to an 8-bit shift register. Data can also be loaded serially (see Function Table). The shift register output, OH, is a three-state output, allowing this device to be used in bus-oriented systems. Features - - - - - High Speed Operation: tpd (Shift Clock to Q H) = 15 ns typ (CL = 50 p F) High Output Current: Fanout of 15 LSTTL Loads Wide Operating Voltage: VCC = 2 to 6 V Low Input Current: 1 µA max Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C) Function Table Latch Clock LCK Shift Clock SCK X X X L, H, X X L, H, Serial Shift/ Parallel Load X L L X H Output Enable OE X L L H L Function Data are loaded into input latches Data are loaded from input into shift registers Data are transfered from input latches to shift registers Outputs are disabled Serial shift Qn = Qn - 1, Q0 = SER Pin Arrangement B 1 C 2 D 3 E 4 F 5 G 6 H 7 GND 8 (Top view) 16 VCC 15 A 14 SA 13 Serial Shift/ Parallel Load 12 Latch Clock 11 Shift Clock 10 Output Enable 9 QH Absolute Maximum Ratings Item Supply voltage range Input voltage Output voltage Output current DC current drain per VCC, GND DC input diode current DC output diode current Power Dissipation per package Storage temperature Symbol VCC VIN VOUT I OUT I CC, I GND I IK I OK PT Tstg Rating - 0.5 to +7.0 - 0.5 to VCC + 0.5 - 0.5 to VCC + 0.5 ±35 ±75 ±20 ±20 500 - 65 to +150 Unit V V V m A m A m A m A m W °C Logic Diagram SCK SA Shift/ Load SCK A LCK Q D LCK Q SCK S SCK Q D SCK R LCK Q D LCK Q S SCK Q D SCK R H LCK LCK VCC LCK QH OE DC Characteristics Ta = 25°C Item Input voltage Symbol VIH Ta = - 40 to +85°C Max - - - 0.5 1.35 1.8 - - - - - 0.1 0.1 0.1 0.33 0.33 ±5.0 ±1.0 40 µA µA µA I OL = 6 m A I OL = 7.8 m A Vin = VIH or VIL, Vout = VCC or GND Vin = VCC or GND Vin = VCC or GND, Iout = 0 µA V I OH = -...