 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| 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/HCT273 Octal D-type flip-flop with reset; positive-edge trigger Product specification File under Integrated Circuits, IC06 September 1993 Philips Semiconductors Product specification Octal D-type flip-flop with reset; positive-edge trigger FEATURES * Ideal buffer for MOS microprocessor or memory * Common clock and master reset * Eight positive edge-triggered D-type flip-flops * See "377" for clock enable version * See "373" for transparent latch version * See "374" for 3-state version * Output capability; standard * ICC category: MSI GENERAL DESCRIPTION 74HC/HCT273 The 74HC/HCT273 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/HCT273 have eight edge-triggered, D-type flip-flops with individual D inputs and Q outputs. The common clock (CP) and master reset (MR) inputs load and reset (clear) all flip-flops simultaneously. The state of each D input, one set-up time before the LOW-to-HIGH clock transition, is transferred to the corresponding output (Qn) of the flip-flop. All outputs will be forced LOW independently of clock or data inputs by a LOW voltage level on the MR input. The device is useful for applications where the true output only is required and the clock and master reset are common to all storage elements. QUICK REFERENCE DATA GND = 0 V; Tamb = 25 C; tr = tf = 6 ns TYPICAL SYMBOL tPHL/ tPLH PARAMETER propagation delay CP to Qn MR to Qn fmax CI CPD Notes 1. CPD is used to determine the dynamic power dissipation (PD in W): PD = CPD x VCC2 x fi + (CL x VCC2 x fo) where: fi = input frequency in MHz fo = output frequency in MHz (CL x VCC2 x 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 See "74HC/HCT/HCU/HCMOS Logic Package Information". maximum clock frequency input capacitance power dissipation capacitance per flip-flop notes 1 and 2 CONDITIONS HC CL = 15 pF; VCC = 5 V 15 15 66 3.5 20 15 20 36 3.5 23 ns ns MHz pF pF HCT UNIT September 1993 2 Philips Semiconductors Product specification Octal D-type flip-flop with reset; positive-edge trigger PIN DESCRIPTION PIN NO. 1 2, 5, 6, 9, 12, 15, 16, 19 3, 4, 7, 8, 13, 14, 17, 18 10 11 20 SYMBOL MR Q0 to Q7 D0 to D7 GND CP VCC NAME AND FUNCTION master reset input (active LOW) flip-flop outputs data inputs ground (0 V) 74HC/HCT273 clock input (LOW-to-HIGH, edge-triggered) positive supply voltage Fig.1 Pin configuration. Fig.2 Logic symbol. Fig.3 IEC logic symbol. September 1993 3 Philips Semiconductors Product specification Octal D-type flip-flop with reset; positive-edge trigger FUNCTION TABLE OPERATING MODES reset (clear) load "1" load "0" Note 74HC/HCT273 INPUTS MR L H H CP X Dn X h I OUTPUTS Qn L H L 1. H = HIGH voltage level h = HIGH voltage level one set-up time prior to the LOW-to-HIGH CP transition L = LOW voltage level I = LOW voltage level one set-up time prior to the LOW-to-HIGH CP transition = LOW-to-HIGH transition X = don't care Fig.4 Functional diagram. Fig.5 Logic diagram. September 1993 4 Philips Semiconductors Product specification Octal D-type flip-flop with reset; positive-edge trigger 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) 74HC SYMBOL PARAMETER min. tPHL/ tPLH propagation delay CP to Qn propagation delay MR to Qn output transition time +25 typ. 41 15 13 44 16 14 19 7 6 80 16 14 14 5 4 17 6 5 -6 -2 -2 11 4 3 -6 -2 -2 20.6 103 122 max. 150 30 26 150 30 26 75 15 13 100 20 17 75 15 13 65 13 11 75 15 13 3 3 3 4.8 24 28 -40 to +85 min. max. 185 37 31 185 37 31 95 19 15 120 24 20 90 18 15 75 15 13 90 18 15 3 3 3 4.0 20 24 -40 to +125 min. max. 225 45 38 225 45 38 110 22 19 ns 74HC/HCT273 TEST CONDITIONS UNIT V WAVEFORMS CC (V) 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 Fig.6 tPHL ns Fig.7 tTHL/ tTLH ns Fig.6 tW clock pulse width HIGH or LOW ns Fig.6 tW master reset pulse width 60 LOW 12 10 removal time MR to CP set-up time Dn to CP hold time Dn to CP maximum clock pulse frequency 50 10 9 60 12 10 3 3 3 6.0 30 35 ns Fig.7 trem ns Fig.7 tsu ns Fig.8 th ns Fig.8 fmax MHz Fig.6 September 1993 5 Philips Semiconductors Product specification Octal D-type flip-flop with reset; positive-edge trigger 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 74HC/HCT273 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. INPUT MR CP Dn UNIT LOAD COEFFICIENT 1.00 1.75 0.15 AC CHARACTERISTICS FOR 74HCT GND = 0 V; tr = tf = 6 ns; CL = 50 pF Tamb (C) 74HCT SYMBOL PARAMETER min. tPHL/ tPLH tPHL tTHL/ tTLH tW tW trem tsu th fmax propagation delay CP to Qn propagation delay MR to Qn output transition time clock pulse width HIGH or LOW 16 +25 typ. 16 23 7 9 8 -2 5 -4 56 max. 30 34 15 20 20 13 15 3 24 -40 to +85 min. max. 38 43 19 24 24 15 18 3 20 -40 to +125 min. max. 45 51 22 ns ns ns ns ns ns ns ns MHz 4.5 4.5 4.5 4.5 4.5 4.5 4.5 4.5 4.5 Fig.6 Fig.7 Fig.6 Fig.6 Fig.7 Fig.7 Fig.8 Fig.8 Fig.6 UNIT V WAVEFORMS CC (V) TEST CONDITIONS master reset pulse width 16 LOW removal time MR to CP set-up time Dn to CP hold time Dn to CP maximum clock pulse frequency 10 12 3 30 September 1993 6 Philips Semiconductors Product specification Octal D-type flip-flop with reset; positive-edge trigger AC WAVEFORMS 74HC/HCT273 (1) HC : VM = 50%; VI = GND to VCC. HCT: VM = 1.3 V; VI = GND to 3 V. Fig.6 Waveforms showing the clock (CP) to output (Qn) propagation delays, the clock pulse width output transition times and the maximum clock pulse frequency. (1) HC : VM = 50%; VI = GND to VCC. HCT: VM = 1.3 V; VI = GND to 3 V. Fig.7 Waveforms showing the master reset (MR) pulse width, the master reset to output (Qn) propagation delays and the master reset to clock (CP) removal time. The shaded areas indicate when the input is permitted to change for predictable output performance. (1) HC : VM = 50%; VI = GND to VCC. HCT: VM = 1.3 V; VI = GND to 3 V. Fig.8 Waveforms showing the data set-up and hold times for the data input (Dn). September 1993 7 Philips Semiconductors Product specification Octal D-type flip-flop with reset; positive-edge trigger PACKAGE OUTLINES See "74HC/HCT/HCU/HCMOS Logic Package Outlines". 74HC/HCT273 September 1993 8 |
Price & Availability of 74HC273
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |