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HD74HC91 - 8-bit Shift Register

Description

This serial-in, serial-out, 8-bit shift register is composed of eight R-S master-slave flip-flops, input gating, and a clock drive.

Single-rail data and input control are gated through inputs A and B and an internal inverter to form the complementary inputs to the first bit of the shift register.

Features

  • High Speed Operation: tpd (Data Word Input to Output) = 21 ns typ (CL = 50 pF) High Output Current: Fanout of 10 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 Inputs tn A H L X X : tn : t n + 8: B H X L Irrelevant Reference bit time, clock low Bit time after 8 low-to-high clock transitions Outputs tn + 8 QH H L L QH L H H HD74HC91 P.

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📁 Similar Datasheet

Part Number Description Manufacturer
HD74HC91 8-bit Shift Register Renesas
HD74HC93 4-bit Binary Counter Renesas
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HD74HC01 Quad. 2-input NAND Gates Renesas
HD74HC02 Quad. 2-input NOR Gates Renesas

Other Datasheets by Hitachi Semiconductor (now Renesas)

Part Number Description
HD74HC93 4-bit Binary Counter
HD74HC95 4-bit Parallel Access Shift Register
HD74HC00 Quad. 2-input NAND Gates
HD74HC01 Quad. 2-input NAND Gates
HD74HC02 Quad. 2-input NOR Gates

Full PDF Text Transcription

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HD74HC91 8-bit Shift Register Description This serial-in, serial-out, 8-bit shift register is composed of eight R-S master-slave flip-flops, input gating, and a clock drive. Single-rail data and input control are gated through inputs A and B and an internal inverter to form the complementary inputs to the first bit of the shift register. Drive for the internal common clock line is provided by an inverting clock driver. This clock pulse inverter/driver causes these circuits to shift information one bit on the positive edge of an input clock pulse.
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