74HC91

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. 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 Pin Arrangement NC NC NC NC Vcc NC NC 1 2 3 4 5 6 7 (Top View) CK QH QH A B 14 13 12 11 10 9 8 QH QH A Inputs B GND Clock NC 2 HD74HC91 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 ±1.0 40 µA µA I OL = 4 mA I OL = 5.2 mA Vin = VCC or GND Vin = VCC or GND, Iout = 0 µA V I OH = –4 mA I OH = –5.2 mA Vin = VIH or VIL I OL = 20 µA V Vin = VIH or VIL I OH = –20 µA V Unit V Test Conditions VCC (V) Min Typ Max Min 2.0 4.5 6.0 1.5 — 3.15 — 4.2 — — — — — — — — — — 0.5 1.5 3.15 4.2 — VIL 2.0 4.5 6.0 1.35 — 1.8 — 1.9 4.4 5.9 4.13 5.63 — — — Output voltage VOH 2.0 4.5 6.0 4.5 6.0 1.9 2.0 — 4.4 4.5 — 5.9 6.0 — 4.18 — 5.68 — — — — — — — — — — VOL 2.0 4.5 6.0 4.5 6.0 0.0 0.1 0.0 0.1 0.0 0.1 — — — — 0.26 — 0.26 — ±0.1 — 4.0 — Input current Quiescent supply current Iin I CC 6.0 6.0 3 HD74HC91 AC Characteristics (CL = 50 pF, Input tr = tf = 6 ns) Ta = 25°C Item Maximum clock frequency Symbol f max Ta = –40 to +85°C Max 4 20 24 265 53 45 265 53 45 — — — — — — — — — 95 19 16 10 pF ns ns ns ns Clock ns ns Unit MHz Test Conditions VCC (V) Min Typ Max Min 2.0 4.5 6.0 — — — — — — — — — — — — — 21 — — 21 — 5 25 29 — — — Propagation delay t PLH time 2.0 4.5 6.0 210 — 42 36 — — t PHL 2.0 4.5 6.0 210 — 42 36 — — — — — — — — — 75 15 13 10 — — 156 31 26 156 31 26 5 5 5 — — — — Pulse width tw 2.0 4.5 6.0 125 — 25 21 9 — Set up time t su 2.0 4.5 6.0 125 — 25 21 5 5 5 — — — — 1 — — –1 — — 5 — 5 Hold time th 2.0 4.5 6.0 Output rise/fall time t TLH t THL 2.0 4.5 6.0 Input capacitance Cin — 4 Unit: mm 19.20 20.32 Max 14 8 6.30 7.40 Max 1 2.39 Max 1.30 7 7.62 0.51 Min 2.54 Min 5.06 Max 2.54 ± 0.25 0.48 ± 0.10 0.25 – 0.05 0° – 15° + 0.10 Hitachi Code JEDEC EIAJ Weight (reference value) DP-14 Conforms Conforms 0.97 g Unit: mm 10.06 10.5 Max 14 8 5.5 1 7 *0.22 ± 0.05 0.20 ± 0.04 2.20 Max 7.80 – 0.30 1.15 0° – 8° + 0.20 1.42 Max 1.27 *0.42 ± 0.08 0.40 ± 0.06 0.10 ± 0.10 0.70 ± 0.20 0.15 0.12 M Hitachi Code JEDEC EIAJ Weight (reference value) FP-14DA — Conforms 0.23 g *Dimension including the plating thickness Base material dimension Unit: mm 8.65 9.05 Max 14 8 3.95 1 1.75 Max 7 *0.20 ± 0.05 6.10 – 0.30 1.08 + 0.10 0.635 Max 0° – 8° 0.67 0.60 + 0.20 – 1.27 *0.40 ± 0.06 0.11 0.14 + 0.04 – 0.15 0.25 M Hitachi Code JEDEC EIAJ Weight (reference value) FP-14DN Conforms Conforms 0.13 g *Pd plating Unit: mm 5.00 5.30 Max 14 8 4.40 1 *0.22+0.08 –0.07 7 0.65 1.0 0.13 M 0.83 Max *0.17 ± 0.05 0.15 ± 0.04 1.10 Max 6.40 ± 0.20 0° – 8° 0.50 ± 0.10 0.20 ± 0.06 0.10 0.07 +0.03 –0.04 *Dimension including the plating thickness Base material dimension Hitachi Code JEDEC EIAJ Weight (reference value) TTP-14D — — 0.05 g Cautions 1. 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Ltd. 16 Collyer Quay #20-00 Hitachi Tower Singapore 049318 Tel: 535-2100 Fax: 535-1533 Hitachi Asia Ltd. Taipei Branch Office 3F, Hung Kuo Building. No.167, Tun-Hwa North Road, Taipei (105) Tel: (2) 2718-3666 Fax: (2) 2718-8180 Hitachi Asia (Hong Kong) Ltd. Group III (Electronic Components) 7/F., North Tower, World Finance Centre, Harbour City, Canton Road, Tsim Sha Tsui, Kowloon, Hong Kong Tel: (2) 735 9218 Fax: (2) 730 0281 Telex: 40815 HITEC HX Copyright ' Hitachi, Ltd., 1999. All rights reserved. Printed in Japan.