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/HCT194 4-bit bidirectional universal shift register Product specification File under Integrated Circuits, IC06 December 1990
Philips Semiconductors Product specification 4-bit bidirectional universal shift register 74HC/HCT194 and shifted from left to right (Q0 → Q1 → Q2, etc.) or, right to left (Q3 → Q2 → Q1, etc.) or parallel data can be entered, loading all 4 bits of the register simultaneously. When both S0 and S1 are LOW, existing data is retained in a hold (“do nothing”) mode.
Philips Semiconductors Product specification 4-bit bidirectional universal shift register 74HC/HCT194 ORDERING INFORMATION See “74HC/HCT/HCU/HCMOS Logic Package Information”. PIN DESCRIPTION PIN NO.
Philips Semiconductors Product specification 4-bit bidirectional universal shift register 74HC/HCT194 Fig.4 Functional diagram.
Philips Semiconductors Product specification 4-bit bidirectional universal shift register 74HC/HCT194 Fig.5 Logic diagram. Fig.6 Typical clear, clear-load, shift-right, shift-left, inhibit and clear timing sequences.
Philips Semiconductors Product specification 4-bit bidirectional universal shift register DC CHARACTERISTICS FOR 74HC For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Philips Semiconductors Product specification 4-bit bidirectional universal shift register 74HC/HCT194 AC CHARACTERISTICS FOR 74HC GND = 0 V; tr = tf = 6 ns; CL = 50 pF Tamb (°C) TEST CONDITIONS 74HC SYMBOL PARAMETER +25 min. typ. −40 to +85 max. min. max. −40 to +125 min. UNIT VCC WAVEFORMS (V) max. tPHL/ tPLH propagation delay CP to Qn 47 17 14 145 29 25 180 36 31 220 44 38 ns 2.0 4.5 6.0 Fig.7 tPHL propagation delay MR to Qn 39 14 11 140 28 24 175 35 30 210 42 36 ns 2.0 4.
Philips Semiconductors Product specification 4-bit bidirectional universal shift register 74HC/HCT194 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 4-bit bidirectional universal shift register 74HC/HCT194 AC CHARACTERISTICS FOR 74HCT GND = 0 V; tr = tf = 6 ns; CL = 50 pF Tamb (°C) TEST CONDITIONS 74HCT SYMBOL PARAMETER +25 min. −40 to +85 typ. max. min. max. −40 to +125 min. UNIT VCC (V) WAVEFORMS max. tPHL/ tPLH propagation delay CP to Qn 18 32 40 48 ns 4.5 Fig.7 tPHL propagation delay MR to Qn 18 32 40 48 ns 4.5 Fig.
Philips Semiconductors Product specification 4-bit bidirectional universal shift register 74HC/HCT194 AC WAVEFORMS (1) HC : VM = 50%; VI = GND to VCC. HCT: VM = 1.3 V; VI = GND to 3 V. (1) HC : VM = 50%; VI = GND to VCC. HCT: VM = 1.3 V; VI = GND to 3 V. Fig.7 Fig.8 Waveforms showing the clock (CP) to output (Qn) propagation delays, the clock pulse width, the output transition times and the maximum clock frequency.