74HCT534N NXP

74HCT534 5 V octal D-type ip-op; positive-edge trigger; inverting; 3-state Rev. 03 18 October 2004 Product data sheet 1. General description The 74HCT534 is a high-speed Si-gate CMOS device and is pin compatible with low power Schottky TTL (LSTTL). The 74HCT534 is specied in compliance with JEDEC standard no. 7A. The 74HCT534 is an octal D-type ip-op featuring separate D-type inputs for each ip-op and inverting 3-state outputs for bus oriented applications. A clock (CP) and an output enable (OE) input are common to all ip-ops. The 8 ip-ops 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 ip-ops 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 ip-ops. The 74HCT534 is functionally identical to the 74HCT374, but has inverted outputs. 2. Features 3-state inverting outputs for bus oriented applications 8-bit positive-edge triggered register Common 3-state output enable input. 3. Quick reference data Table 1: Quick reference data GND = 0 V; T =25 C; t =t = 6 ns. amb r f Symbol Parameter Conditions Min Typ Max Unit t , t propagation delay C = 15 pF; V = 5 V - 13 - ns PHL PLH L CC CP to Qn f maximum clock C = 15 pF; V = 5 V - 40 - MHz max L CC frequency C input capacitance - 3.5 - pF I [1] [2] C power dissipation C = 50 pF; V = 4.5 V -19 - pF PD L CC capacitance per ip-op [1] C is used to determine the dynamic power dissipation (P in W). PD D 2 2 P =C V f N+ (C V f ) where: D PD CC i L CC o f = input frequency in MHz; i f = output frequency in MHz; o C = output load capacitance in pF; L74HCT534 Philips Semiconductors 5 V octal D-type ip-op; positive-edge trigger; inverting; 3-state V = supply voltage in Volts; CC N = number of inputs switching; 2 (C V f ) = sum of the outputs. L CC o [2] The condition is V = GND to V - 1.5 V. I CC 4. Ordering information Table 2: Ordering information Type number Package Temperature range Name Description Version 74HCT534N - 40 C t0 +125 C DIP20 plastic dual in-line package; 20 leads (300 mil) SOT146-1 74HCT534D - 40 C t0 +125 C SO20 plastic small outline package; 20 leads; body SOT163-1 width 7.5 mm 5. Functional diagram 3 D0 Q0 2 4 D1 Q1 5 7 D2 Q2 6 FF1 8 D3 Q3 9 3-STATE to 13 D4 OUTPUTS Q4 12 FF8 14 D5 Q5 15 17 D6 Q6 16 18 D7 Q7 19 11 CP 1 OE mgm957 Fig 1. Functional diagram. 9397 750 13817 Koninklijke Philips Electronics N.V. 2004. All rights reserved. Product data sheet Rev. 03 18 October 2004 2 of 15