HD74HC76 Dual J-K Flip-Flops (with Preset and Clear) Description Each flip-flop has independent J, K, preset, clear, and clock inputs and Q and Q outputs. This device is edge sensitive to the clock input and change state on the negative going transition of the clock pulse. Clear and preset are independent of the clock and accomplished by a low logic level on the corresponding input. Features • • • • • High Speed Operation: tpd (Clock to Q) = 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) = 2 µA max (Ta = 25°C) Function Table Inputs Outputs Preset Clear Clock J K Q Q L H X X X H L H L X X X L L L H H*1 X X H* H L L No change H H L H L H H H H L H L H H H H Toggle H H L X X No change H H H X X No change H H X X No change Note: X H 1 1. Q and Q will remain HIGH as long as Preset and Clear are Low, but Q and Q are unpredictable, if Preset and Clear go HIGH simultaneously. HD74HC76 Pin Arrangement 16 1K 1CK 1 J CK K 1PR 2 PR 1CLR 3 Q 15 1Q CLR 14 1Q Q 13 GND 1J 4 12 2K VCC 5 K CK J 2CK 6 CLR 2PR 7 Q 11 2Q PR 10 2Q Q 9 2J 2CLR 8 (Top view) Block Diagram (1//2) PR Q CLR J # CK CK Q K # CK CK CK # CK # CK 2 CK CK CK # CK HD74HC76 DC Characteristics Ta = –40 to +85°C Ta = 25°C Item Symbol VCC (V) Min Typ Max Min Max Unit Input voltage VIH 2.0 1.5 — — 1.5 — V 4.5 3.15 — — 3.15 — 6.0 4.2 — — 4.2 — 2.0 — — 0.5 — 0.5 4.5 — — 1.35 — 1.35 6.0 — — 1.8 — 1.8 2.0 1.9 2.0 — 1.9 — 4.5 4.4 4.5 — 4.4 — 6.0 5.9 6.0 — 5.9 — 4.5 4.18 — — 4.13 — I OH = –4 mA 6.0 5.68 — — 5.63 — I OH = –5.2 mA 2.0 — 0.0 0.1 — 0.1 4.5 — 0.0 0.1 — 0.1 6.0 — 0.0 0.1 — 0.1 4.5 — — 0.26 — 0.33 I OL = 4 mA 6.0 — — 0.26 — 0.33 I OL = 5.2 mA VIL Output voltage VOH VOL Test Conditions V V V Vin = VIH or VIL I OH = –20 µA Vin = VIH or VIL I OL = 20 µA Input current Iin 6.0 — — ±0.1 — ±1.0 µA Vin = VCC or GND Quiescent supply current I CC 6.0 — — 2.0 20 µA Vin = VCC or GND, Iout = 0 µA — 3 HD74HC76 AC Characteristics (CL = 50 pF, Input tr = tf = 6 ns) Ta = –40 to +85°C Ta = 25°C Item Symbol VCC (V) Min Typ Max Min Max Unit Maximum clock f max 2.0 — — 6 — 5 MHz 4.5 — — 30 — 24 6.0 — — 35 — 28 Propagation delay t PLH 2.0 — — 150 — 190 time 4.5 — 21 30 — 38 6.0 — — 26 — 33 2.0 — — 140 — 175 4.5 — 17 28 — 35 6.0 — — 24 — 30 2.0 — — 140 — 175 4.5 — 19 28 — 35 6.0 — — 24 — 30 2.0 80 — — 100 — 4.5 16 6 — 20 — 6.0 14 — — 17 — 2.0 100 — — 125 — 4.5 20 4 — 25 — 6.0 17 — — 21 — 2.0 0 — — 0 — 4.5 0 –3 — 0 — 6.0 0 — — 0 — 2.0 100 — — 125 — 4.5 20 –2 — 25 — 6.0 17 — — 21 — frequency Pulse width Setup time Hold time Removal time t PHL tw t su th t rem Output rise/fall t TLH 2.0 — — 75 — 95 time t THL 4.5 — 5 15 — 19 6.0 — — 13 — 16 — — 5 10 — 10 Input capacitance 4 Cin ns Test Conditions Clock to Q or Q Clear to Q or Q Preset to Q or Q ns Preset, Clear, Clock ns J or K to Clock ns Clock to J or K ns Preset or Clear to Clock ns pF Unit: mm 19.20 20.00 Max 1 7.40 Max 9 6.30 16 8 1.3 0.48 ± 0.10 2.54 Min 5.06 Max 2.54 ± 0.25 0.51 Min 1.11 Max 7.62 + 0.13 0.25 – 0.05 0° – 15° Hitachi Code JEDEC EIAJ Weight (reference value) DP-16 Conforms Conforms 1.07 g Unit: mm 10.06 10.5 Max 9 1 8 1.27 *0.42 ± 0.08 0.40 ± 0.06 0.10 ± 0.10 0.80 Max *0.22 ± 0.05 0.20 ± 0.04 2.20 Max 5.5 16 0.20 7.80 +– 0.30 1.15 0° – 8° 0.70 ± 0.20 0.15 0.12 M *Dimension including the plating thickness Base material dimension Hitachi Code JEDEC EIAJ Weight (reference value) FP-16DA — Conforms 0.24 g Unit: mm 9.9 10.3 Max 9 1 8 0.635 Max *0.42 ± 0.08 0.40 ± 0.06 0.15 *0.22 ± 0.03 0.20 ± 0.03 1.27 0.11 0.14 +– 0.04 1.75 Max 3.95 16 0.10 6.10 +– 0.30 1.08 0° – 8° 0.67 0.60 +– 0.20 0.25 M *Dimension including the plating thickness Base material dimension Hitachi Code JEDEC EIAJ Weight (reference value) FP-16DN Conforms Conforms 0.15 g Cautions 1. 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Even within the guaranteed ranges, consider normally foreseeable failure rates or failure modes in semiconductor devices and employ systemic measures such as failsafes, so that the equipment incorporating Hitachi product does not cause bodily injury, fire or other consequential damage due to operation of the Hitachi product. 5. This product is not designed to be radiation resistant. 6. No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without written approval from Hitachi. 7. Contact Hitachi’s sales office for any questions regarding this document or Hitachi semiconductor products. Hitachi, Ltd. Semiconductor & Integrated Circuits. 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