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74HC534 Datenblatt(PDF) 2 Page - NXP Semiconductors |
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74HC534 Datenblatt(HTML) 2 Page - NXP Semiconductors |
2 / 13 page 1998 Apr 10 2 Philips Semiconductors Product specification Octal D-type flip-flop; positive edge-trigger; 3-state; inverting 74HC/HCT534 FEATURES • 3-state inverting outputs for bus oriented applications • 8-bit positive, edge-triggered register • Common 3-state output enable input • Output capability: bus driver • ICC category: MSI. GENERAL DESCRIPTION The 74HC/HCT534 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A. The 74HC/HCT534 are octal D-type flip-flops featuring separate D-type inputs for each flip-flop and inverting 3-state outputs for bus oriented applications. A clock (CP) and an output enable (OE) input are common to all flip-flops. The 8 flip-flops will store the state of their individual D-inputs that meet the set-up and hold times requirements on the LOW-to-HIGH CP transition. When OE is LOW, the contents of the 8 flip-flops are available at the outputs. When OE is HIGH, the outputs go to the high impedance OFF-state. Operation of the OE input does not affect the state of the flip-flops. The “534” is functionally identical to the “374”, but has inverted outputs. QUICK REFERENCE DATA GND = 0 V; Tamb =25 °C; tr =tf =6ns Notes 1. CPD is used to determine the dynamic power dissipation (PD in µW): PD =CPD × VCC2 × fi +∑ (CL × VCC2 × fo) where: fi = input frequency in MHz. fo = output frequency in MHz. ∑ (CL × VCC2 × fo) = sum of outputs. CL = output load capacitance in pF. VCC = supply voltage in V. 2. For HC the condition is VI = GND to VCC; for HCT the condition is VI = GND to VCC − 1.5 V. ORDERING INFORMATION SYMBOL PARAMETER CONDITIONS TYPICAL UNIT HC HCT tPHL/ tPLH propagation delay CP to Qn CL = 15 pF; VCC =5V 12 13 ns fmax maximum clock frequency 61 40 MHz CI input capacitance 3.5 3.5 pF CPD power dissipation capacitance per flip-flop notes 1 and 2 19 19 pF TYPE NUMBER PACKAGE NAME DESCRIPTION VERSION 74HC534 SO20 plastic small outline package; 20 leads; body width 7.5 mm SOT163-1 74HC534 DIP20 plastic dual in-line package; 20 leads (300 mil) SOT146-1 74HCT534 SO20 plastic small outline package; 20 leads; body width 7.5 mm SOT163-1 74HCT534 DIP20 plastic dual in-line package; 20 leads (300 mil) SOT146-1 |
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Ähnliche Beschreibung - 74HC534 |
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