INTEGRATED CIRCUITS DATA SHEET For a complete data sheet, please also download: • The IC06 74HC/HCT/HCU/HCMOS Logic Family Specifications • The IC06 74HC/HCT/HCU/HCMOS Logic Package Information • The IC06 74HC/HCT/HCU/HCMOS Logic Package Outlines 74HC/HCT393 Dual 4-bit binary ripple counter Product specification File under Integrated Circuits, IC06 December 1990
Philips Semiconductors Product specification Dual 4-bit binary ripple counter 74HC/HCT393 The 74HC/HCT393 are 4-bit binary ripple counters with separate clocks (1CP and 2 CP) and master reset (1MR and 2MR) inputs to each counter. The operation of each half of the “393” is the same as the “93” except no external clock connections are required. The counters are triggered by a HIGH-to-LOW transition of the clock inputs.
Philips Semiconductors Product specification Dual 4-bit binary ripple counter 74HC/HCT393 PIN DESCRIPTION PIN NO. SYMBOL NAME AND FUNCTION 1, 13 1CP, 2CP clock inputs (HIGH-to-LOW, edge-triggered) 2, 12 1MR, 2MR asynchronous master reset inputs (active HIGH) 3, 4, 5, 6, 11, 10, 9, 8 1Q0 to 1Q3, 2Q0 to 2Q3 flip-flop outputs 7 GND ground (0 V) 14 VCC positive supply voltage Fig.1 Pin configuration. December 1990 Fig.2 Logic symbol. 3 Fig.3 IEC logic symbol.
Philips Semiconductors Product specification Dual 4-bit binary ripple counter 74HC/HCT393 Fig.4 Functional diagram. Fig.5 State diagram. COUNT SEQUENCE FOR 1 COUNTER OUTPUTS COUNT Q0 December 1990 Q3 L H L H L L H H L L L L L L L L 4 5 6 7 L H L H L L H H H H H H L L L L 8 9 10 11 L H L H L L H H L L L L H H H H 12 13 14 15 L H L H L L H H H H H H H H H H 1. H = HIGH voltage level L = LOW voltage level 4 Q2 0 1 2 3 Notes Fig.6 Logic diagram (one counter).
Philips Semiconductors Product specification Dual 4-bit binary ripple counter 74HC/HCT393 DC CHARACTERISTICS FOR 74HC For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”. Output capability: standard ICC category: MSI AC CHARACTERISTICS FOR 74HC GND = 0 V; tr = tf = 6 ns; CL = 50 pF Tamb (°C) TEST CONDITIONS 74HC SYMBOL PARAMETER +25 −40 to +85 min. typ. max. min. max. −40 to +125 UNIT V WAVEFORMS CC (V) min. max.
Philips Semiconductors Product specification Dual 4-bit binary ripple counter 74HC/HCT393 DC CHARACTERISTICS FOR 74HCT For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”. Output capability: standard ICC category: MSI Note to HCT types The value of additional quiescent supply current (∆ICC) for a unit load of 1 is given in the family specifications. To determine ∆ICC per input, multiply this value by the unit load coefficient shown in the table below.
Philips Semiconductors Product specification Dual 4-bit binary ripple counter 74HC/HCT393 AC WAVEFORMS (1) HC : VM = 50%; VI = GND to VCC. HCT: VM = 1.3 V; VI = GND to 3 V. Fig.7 Waveforms showing the clock (nCP) to output (1Qn, 2Qn) propagation delays, the clock pulse width, the output transition times and the maximum clock frequency. (1) HC : VM = 50%; VI = GND to VCC. HCT: VM = 1.3 V; VI = GND to 3 V. Fig.
