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2 INTEGRATED CIRCUITS DATA SHEET For a complete data sheet, please also download: The IC06 74HC/HCT/HCU/HCMOS ogic Family Specifications The IC06 74HC/HCT/HCU/HCMOS ogic Package Information The IC06 74HC/HCT/HCU/HCMOS ogic Package Outlines Octal Schmitt trigger buffer/line driver; 3-state Supersedes data of March 1988 File under Integrated Circuits, IC06 December 1990

3 FEATURES Non-inverting outputs Schmitt trigger action on all data inputs Output capability: bus driver I CC category: MSI GENERA DESCRIPTION The are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TT (STT). They are specified in compliance with JEDEC standard no. 7A. The are octal Schmitt trigger non-inverting buffer/line drivers with 3-state outputs. The 3-state outputs are controlled by the output enable inputs OE 1 and OE 2. A HIGH on OE n causes the outputs to assume a high impedance OFF-state. The Schmitt trigger action in the data inputs transforms slowly changing input signals into sharply defined jitter-free output signals. The 7541 is identical to the 541 but has hysteresis on the data inputs. QUICK REFERENCE DATA GND = 0 V; T amb =25 C; t r =t f = 6 ns TYPICA SYMBO PARAMETER CONDITIONS HC HCT UNIT t PH / t PH propagation delay A n to Y n C = 15 pf; V CC = 5 V ns C I input capacitance pf C PD power dissipation capacitance per buffer notes 1 and pf Notes 1. C PD is used to determine the dynamic power dissipation (P D in µw): P D =C PD V 2 CC f i + (C V 2 CC f o ) where: f i = input frequency in MHz f o = output frequency in MHz (C V 2 CC f o ) = sum of outputs C = output load capacitance in pf V CC = supply voltage in V 2. For HC the condition is V I = GND to V CC For HCT the condition is V I = GND to V CC 1.5 V ORDERING INFORMATION See 74HC/HCT/HCU/HCMOS ogic Package Information. December

4 PIN DESCRIPTION PIN NO. SYMBO NAME AND FUNCTION 1, 19 OE 1, OE 2 output enable inputs (active OW) 2, 3, 4, 5, 6, 7, 8, 9 A 0 to A 7 data inputs 10 GND ground (0 V) 18, 17, 16, 15, 14, 13, 12, 11 Y 0 to Y 7 bus outputs 20 V CC positive supply voltage Fig.1 Pin configuration. Fig.2 ogic symbol. Fig.3 IEC logic symbol. December

5 FUNCTION TABE INPUTS OUTPUTS OE 1 OE 2 A n Y n X H H X H X X Notes 1. H = HIGH voltage level = OW voltage level X = don t care Z = high impedance OFF-state H Z Z Fig.4 Functional diagram. Fig.5 ogic diagram. December

6 DC CHARACTERISTICS FOR 74HC For the DC characteristics see 74HC/HCT/HCU/HCMOS ogic Family Specifications. Transfer characteristics are given below (not applicable for OE n inputs). Output capability: bus driver I CC category: MSI AC CHARACTERISTICS FOR 74HC GND = 0 V; t r =t f = 6 ns; C = 50 pf SYMBO t PH / t PH t PZH / t PZ t PHZ / t PZ PARAMETER propagation delay 39 A n to Y n state output enable time 44 OE n to Y n state output disable time 58 OE n to Y n t TH / t TH output transition time T amb ( C) 74HC to to +125 min. typ. max. min. max. min. max UNIT TEST CONDITIONS V CC (V) ns 2.0 ns 2.0 ns 2.0 ns 2.0 WAVEFORMS Fig.8 Fig.8 Fig.8 Fig.8 TRANSFER CHARACTERISTICS FOR 74HC Voltages are referred to GND (ground = 0 V) SYMBO PARAMETER V T+ positive-going threshold V T negative-going threshold V H hysteresis (V T+ V T ) T amb ( C) 74HC to to +125 min. typ. max. min. max. min. max UNIT TEST CONDITIONS V CC (V) V 2.0 V 2.0 V 2.0 WAVEFORMS December

7 DC CHARACTERISTICS FOR 74HCT For the DC characteristics see 74HC/HCT/HCU/HCMOS ogic Family Specifications. Transfer characteristics are given below (not applicable for OE n inputs). Output capability: bus driver I CC category: MSI Note to HCT types The value of additional quiescent supply current ( I CC ) for a unit load of 1 is given in the family specifications. To determine I CC per input, multiply this value by the unit load coefficient shown in the table below. INPUT OE 1 OE 2 A n UNIT OAD COEFFICIENT AC CHARACTERISTICS FOR 74HCT GND = 0 V; t r =t f = 6 ns; C = 50 pf T amb ( C) TEST CONDITIONS ns Fig ns Fig ns Fig.8 74HCT SYMBO PARAMETER UNIT V to to +125 CC (V) WAVEFORMS min typ. max min. max min. max. t PH / t PH propagation delay A n to Y n t PZH / t PZ 3-state output enable time OE n to Y n t PHZ / t PZ 3-state output disable time OE n to Y n t TH / t TH output transition time ns Fig.8 TRANSFER CHARACTERISTICS FOR 74HCT Voltages are referred to GND (ground = 0 V) SYMBO PARAMETER V T+ positive-going threshold V T negative-going threshold V H hysteresis (V T+ V T ) T amb ( C) 74HCT to to +125 min. typ. max. min. max. min. max UNIT TEST CONDITIONS V CC (V) V 5.5 V 5.5 V 5.5 WAVEFORMS December

8 TRANSFER CHARACTERISTIC WAVEFORMS handbook, halfpage V O MBA325 V H V I V T V T Fig.6 Transfer characteristic. Fig.7 Waveforms showing the definition of V T+, V T and V H. AC WAVEFORMS (1) HC : V M = 50%; V I = GND to V CC. HCT: V M = 1.3 V; V I = GND to 3 V. Fig.8 Waveforms showing the input (A n ) to output (Y n ) propagation delays and the output transition times. (1) HC : V M = 50%; V I = GND to V CC. HCT: V M = 1.3 V; V I = GND to 3 V. Fig.9 Waveforms showing the 3-state enable and disable times. PACKAGE OUTINES See 74HC/HCT/HCU/HCMOS ogic Package Outlines. December

INTEGRATED CIRCUITS. For a complete data sheet, please also download:

INTEGRATED CIRCUITS. For a complete data sheet, please also download: INTEGRATED CIRCUITS DATA SHEET For a complete data sheet, please also download: The IC06 74HC/HCT/HCU/HCMOS ogic Family Specifications The IC06 74HC/HCT/HCU/HCMOS ogic Package Information The IC06 74HC/HCT/HCU/HCMOS