HD74AC174 Hex D-Type Flip-Flop with Master Reset Description The HD74AC174 is a high-speed hex D flip-flop. The device is used primarily as a 6-bit edge-triggered storage register. The information on the D inputs is transferred to storage during the Low-to-High clock transition. The device has a Master Reset to simultaneously clear all flip-flops. Feature • Outputs Source/Sink 24 mA Pin Arrangement MR 1 16 VCC Q0 2 15 Q5 D0 3 14 D5 D1 4 13 D4 Q1 5 12 Q4 D2 6 11 D3 Q2 7 10 Q3 GND 8 9 CP (Top view) HD74AC174 Logic Symbol D0 D1 D2 D3 D4 D5 CP MR Q0 Q1 Q2 Q3 Q4 Q5 Pin Names D0 to D5 CP MR Q0 to Q5 Data Inputs Clock Pulse Input Master Reset Input Outputs Functional Description The HD74AC174 consists of six edge-triggered D flip-flops with individual D inputs and Q outputs. The Clock (CP) and Master Reset (MR) are common to all flip-flops. Each D input’s state is transferred to the corresponding flip-flops’s output following the Low-to-High Clock (CP) transition. A Low input to the Master Reset (MR) will force all outputs Low independent of Clock or Data inputs. The HD74AC174 is useful for applications where the true output only is required and the Clock and Master Reset are common to all storage elements. Truth Table Inputs Output MR CP D Q L X X L H H H H L L X Q H L H : L : X : : 2 High Voltage Level Low Voltage Level Immaterial Low-to-High Transition of Clock HD74AC174 Logic Diagram MR CP D5 D4 D Q D3 D CP CD Q D CP CD Q5 D2 Q D CP CD Q4 D1 Q D CP CD Q3 D0 Q D CP CD Q2 Q CP CD Q1 Q0 Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays. DC Characteristics (unless otherwise specified) Item Symbol Max Unit Condition Maximum quiescent supply current I CC 80 µA VIN = VCC or ground, VCC = 5.5 V, Ta = Worst case Maximum quiescent supply current I CC 8.0 µA VIN = VCC or ground, VCC = 5.5 V, Ta = 25°C AC Characteristics: HD74AC174 Ta = +25°C CL = 50 pF Ta = –40°C to +85°C CL = 50 pF Item Symbol VCC (V)*1 Min Typ Max Min Max Unit Maximum clock f max 3.3 90 100 — 70 — MHz 5.0 100 125 — 100 — 3.3 1.0 9.0 11.5 1.0 12.5 5.0 1.0 6.0 8.5 1.0 9.5 3.3 1.0 8.5 11.0 1.0 12.0 5.0 1.0 6.0 8.0 1.0 9.0 3.3 1.0 9.0 11.5 1.0 12.5 5.0 1.0 7.0 9.0 1.0 10.5 frequency Propagation delay t PLH CP to Qn Propagation delay t PHL CP to Qn Propagation delay MR to Q n Note: t PHL ns ns ns 1. Voltage Range 3.3 is 3.3 V ± 0.3 V Voltage Range 5.0 is 5.0 V ± 0.5 V 3 HD74AC174 AC Operating Requirements: HD74AC174 Ta = –40°C to +85°C CL = 50 pF Ta = +25°C CL = 50 pF Item Symbol VCC (V)*1 Typ Guaranteed Minimum Unit Setup time, HIGH or LOW t su 3.3 2.5 6.5 7.0 ns 5.0 2.0 5.0 5.5 3.3 1.0 3.0 3.0 5.0 0.5 3.0 3.0 3.3 1.0 5.5 7.0 5.0 1.0 5.0 5.0 3.3 1.0 5.5 7.0 5.0 1.0 5.0 5.0 3.3 0 2.5 2.5 5.0 0 2.0 2.0 Dn to CP Hold time, HIGH or LOW th Dn to CP MR pulse width, LOW CP pulse width Recovery time tw tw t rec MR to CP Note: 1. Voltage Range 3.3 is 3.3 V ± 0.3 V Voltage Range 5.0 is 5.0 V ± 0.5 V Capacitance Item Symbol Typ Unit Condition Input capacitance CIN 4.5 pF VCC = 5.5 V Power dissipation capacitance CPD 85.0 pF VCC = 5.0 V 4 ns ns ns ns 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 Unit: mm 4.40 5.00 5.30 Max 16 9 1 8 0.65 0.13 M 1.10 Max 0.65 Max 0.10 *Dimension including the plating thickness Base material dimension 6.40 ± 0.20 0.07 +0.03 –0.04 0.20 ± 0.06 1.0 *0.17 ± 0.05 0.15 ± 0.04 0.08 *0.22 +– 0.07 0° – 8° 0.50 ± 0.10 Hitachi Code JEDEC EIAJ Weight (reference value) TTP-16DA — — 0.05 g Cautions 1. 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