74HC243 Quad bus transceiver; 3-state Rev. 03 — 12 November 2004 Product data sheet 1. General description The 74HC243 is a high-speed Si-gate CMOS device and is pin compatible with low power Schottky TTL (LSTTL). The 74HC243 is specified in compliance with JEDEC standard no. 7A. The 74HC243 is a quad bus transceiver featuring non-inverting 3-state bus compatible outputs in both send and receive directions. The 74HC243 is designed for 4-line asynchronous 2-way data communications between data buses. The output enable inputs (OEA and OEB) can be used to isolate the buses. The 74HC243 is similar to the 74HC242 but has non-inverting (true) outputs. 2. Features ■ ■ ■ ■ ■ Non-inverting 3-state outputs 2-way asynchronous data bus communication Low-power dissipation Complies with JEDEC standard no. 7A ESD protection: ◆ HBM EIA/JESD22-A114-B exceeds 2000 V ◆ MM EIA/JESD22-A115-A exceeds 200 V. ■ Multiple package options ■ Specified from −40 °C to +80 °C and from −40 °C to +125 °C. 74HC243 Philips Semiconductors Quad bus transceiver; 3-state 3. Quick reference data Table 1: Quick reference data GND = 0 V; Tamb= 25 °C; tr = tf = 6 ns. Symbol Parameter Conditions Min Typ Max Unit tPHL, tPLH propagation delay An to Bn; Bn to An CL = 15 pF; VCC = 5 V - 6 - ns CI input capacitance - 3.5 - pF CI/O input/output capacitance - 10 - pF - 26 - pF power dissipation capacitance per transceiver CPD [1] [1] VI = GND to VCC CPD is used to determine the dynamic power dissipation (PD in µW). PD = CPD × VCC2 × fi × N + ∑(CL × VCC2 × fo) where: fi = input frequency in MHz; fo = output frequency in MHz; CL = output load capacitance in pF; VCC = supply voltage in V; N = number of inputs switching; ∑(CL × VCC2 × fo) = sum of outputs. 4. Ordering information Table 2: Ordering information Type number Package Temperature range Name Description 74HC243N −40 °C to +125 °C DIP14 plastic dual in-line package; 14 leads (300 mil) SOT27-1 74HC243D −40 °C to +125 °C SO14 plastic small outline package; 14 leads; body width 3.9 mm SOT108-1 74HC243DB −40 °C to +125 °C SSOP14 plastic shrink small outline package; 14 leads; body width 5.3 mm SOT337-1 9397 750 13808 Product data sheet Version © Koninklijke Philips Electronics N.V. 2004. All rights reserved. Rev. 03 — 12 November 2004 2 of 17 74HC243 Philips Semiconductors Quad bus transceiver; 3-state 5. Functional diagram OEB 13 OEA 1 3 4 5 6 ENABLE EXITING A0 B0 A1 B1 A2 B2 A3 B3 11 10 9 8 001aab953 Fig 1. Functional diagram 13 1 3 OEB ENABLE EXITING OEA 13 1 A0 B0 11 A3 B3 EN2 1 3 6 EN1 2 11 4 10 5 9 6 8 8 001aab951 001aab950 Fig 2. Logic symbol 9397 750 13808 Product data sheet Fig 3. IEC logic symbol © Koninklijke Philips Electronics N.V. 2004. All rights reserved. Rev. 03 — 12 November 2004 3 of 17 74HC243 Philips Semiconductors Quad bus transceiver; 3-state 6. Pinning information 6.1 Pinning OEA 1 14 VCC n.c. 2 13 OEB A0 3 12 n.c. A1 4 A2 5 A3 6 GND 7 243 11 B0 10 B1 9 B2 8 B3 001aab948 Fig 4. Pin configuration 6.2 Pin description Table 3: Pin description Symbol Pin Description OEA 1 output enable input (active LOW) n.c. 2 not connected A0 3 data input or output A1 4 data input or output A2 5 data input or output A3 6 data input or output GND 7 ground (0 V) B3 8 data output or input B2 9 data output or input B1 10 data output or input B0 11 data output or input n.c. 12 not connected OEB 13 output enable input VCC 14 positive supply voltage 9397 750 13808 Product data sheet © Koninklijke Philips Electronics N.V. 2004. All rights reserved. Rev. 03 — 12 November 2004 4 of 17 74HC243 Philips Semiconductors Quad bus transceiver; 3-state 7. Functional description 7.1 Function table Table 4: Function table [1] Control Input or output OEA OEB An Bn L L input B=A H L Z Z L H Z Z H H A=B input [1] H = HIGH voltage level; L = LOW voltage level; Z = high-impedance OFF-state. 8. Limiting values Table 5: Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V). Symbol Parameter Conditions Min Max Unit VCC supply voltage IIK input diode current VI < −0.5 V or VI > VCC + 0.5 V −0.5 +7 V - ±20 mA IOK output diode current VO < −0.5 V or VO > VCC + 0.5 V - ±20 mA IO output source or sink current VO = −0.5 V to VCC + 0.5 V - ±35 mA ICC, IGND VCC or GND current - ±70 mA Tstg storage temperature −65 +150 °C Ptot power dissipation DIP14 package [1] - 750 mW SO14 and SSOP16 packages [2] - 500 mW [1] Above 70 °C: Ptot derates linearly with 12 mW/K. [2] Above 70 °C: Ptot derates linearly with 8 mW/K. 9397 750 13808 Product data sheet © Koninklijke Philips Electronics N.V. 2004. All rights reserved. Rev. 03 — 12 November 2004 5 of 17 74HC243 Philips Semiconductors Quad bus transceiver; 3-state 9. Recommended operating conditions Table 6: Recommended operating conditions Symbol Parameter VCC Min Typ Max Unit supply voltage 2.0 5.0 6.0 V VI input voltage 0 - VCC V VO output voltage tr, tf input rise and fall times Tamb Conditions 0 - VCC V VCC = 2.0 V - - 1000 ns VCC = 4.5 V - 6.0 500 ns VCC = 6.0 V - - 400 ns −40 - +125 °C ambient temperature 10. Static characteristics Table 7: Static characteristics At recommended operating conditions; voltages are referenced to GND (ground = 0 V). Symbol Parameter Conditions Min Typ Max Unit HIGH-level input voltage VCC = 2.0 V 1.5 1.2 - V VCC = 4.5 V 3.15 2.4 - V VCC = 6.0 V 4.2 3.2 - V VCC = 2.0 V - 0.8 0.5 V VCC = 4.5 V - 2.1 1.35 V VCC = 6.0 V - 2.8 1.8 V Tamb = 25 °C VIH VIL VOH VOL LOW-level input voltage HIGH-level output voltage LOW-level output voltage VI = VIH or VIL IO = −20 µA; VCC = 2.0 V 1.9 2.0 - V IO = −20 µA; VCC = 4.5 V 4.4 4.5 - V IO = −20 µA; VCC = 6.0 V 5.9 6.0 - V IO = −6.0 mA; VCC = 4.5 V 3.98 4.32 - V IO = −7.8 mA; VCC = 6.0 V 5.48 5.81 - V IO = 20 µA; VCC = 2.0 V - 0 0.1 V IO = 20 µA; VCC = 4.5 V - 0 0.1 V IO = 20 µA; VCC = 6.0 V - 0 0.1 V IO = 6.0 mA; VCC = 4.5 V - 0.15 0.26 V IO = 7.8 mA; VCC = 6.0 V - 0.16 0.26 V VI = VIH or VIL ILI input leakage current VI = VCC or GND; VCC = 6.0 V - - ±0.1 µA IOZ 3-state OFF-state current VI = VIH or VIL; VCC = 6.0 V; VO = VCC or GND - - ±0.5 µA ICC quiescent supply current VI = VCC or GND; IO = 0 A; VCC = 6.0 V - - 8.0 µA CI input capacitance - 3.5 - pF CI/O input/output capacitance - 10 - pF 9397 750 13808 Product data sheet © Koninklijke Philips Electronics N.V. 2004. All rights reserved. Rev. 03 — 12 November 2004 6 of 17 74HC243 Philips Semiconductors Quad bus transceiver; 3-state Table 7: Static characteristics …continued At recommended operating conditions; voltages are referenced to GND (ground = 0 V). Symbol Parameter Conditions Min Typ Max Unit VCC = 2.0 V 1.5 - - V VCC = 4.5 V 3.15 - - V VCC = 6.0 V 4.2 - - V VCC = 2.0 V - - 0.5 V VCC = 4.5 V - - 1.35 V VCC = 6.0 V - - 1.8 V IO = −20 µA; VCC = 2.0 V 1.9 - - V IO = −20 µA; VCC = 4.5 V 4.4 - - V IO = −20 µA; VCC = 6.0 V 5.9 - - V IO = −6.0 mA; VCC = 4.5 V 3.84 - - V IO = −7.8 mA; VCC = 6.0 V 5.34 - - V Tamb = −40 °C to +85 °C VIH VIL VOH VOL HIGH-level input voltage LOW-level input voltage HIGH-level output voltage LOW-level output voltage VI = VIH or VIL VI = VIH or VIL IO = 20 µA; VCC = 2.0 V - - 0.1 V IO = 20 µA; VCC = 4.5 V - - 0.1 V IO = 20 µA; VCC = 6.0 V - - 0.1 V IO = 6.0 mA; VCC = 4.5 V - - 0.33 V IO = 7.8 mA; VCC = 6.0 V - - 0.33 V ILI input leakage current VI = VCC or GND; VCC = 6.0 V - - ±1.0 µA IOZ 3-state OFF-state current VI = VIH or VIL; VCC = 6.0 V; VO = VCC or GND - - ±5.0 µA ICC quiescent supply current VI = VCC or GND; IO = 0 A; VCC = 6.0 V - - 80 µA VCC = 2.0 V 1.5 - - V VCC = 4.5 V 3.15 - - V VCC = 6.0 V 4.2 - - V VCC = 2.0 V - - 0.5 V VCC = 4.5 V - - 1.35 V VCC = 6.0 V - - 1.8 V Tamb = −40 °C to +125 °C VIH VIL VOH HIGH-level input voltage LOW-level input voltage HIGH-level output voltage VI = VIH or VIL IO = −20 µA; VCC = 2.0 V 1.9 - - V IO = −20 µA; VCC = 4.5 V 4.4 - - V IO = −20 µA; VCC = 6.0 V 5.9 - - V IO = −6.0 mA; VCC = 4.5 V 3.7 - - V IO = −7.8 mA; VCC = 6.0 V 5.2 - - V 9397 750 13808 Product data sheet - © Koninklijke Philips Electronics N.V. 2004. All rights reserved. Rev. 03 — 12 November 2004 7 of 17 74HC243 Philips Semiconductors Quad bus transceiver; 3-state Table 7: Static characteristics …continued At recommended operating conditions; voltages are referenced to GND (ground = 0 V). Symbol Parameter Conditions VOL LOW-level output voltage VI = VIH or VIL Min Typ Max Unit - IO = 20 µA; VCC = 2.0 V - - 0.1 V IO = 20 µA; VCC = 4.5 V - - 0.1 V IO = 20 µA; VCC = 6.0 V - - 0.1 V IO = 6.0 mA; VCC = 4.5 V - - 0.4 V IO = 7.8 mA; VCC = 6.0 V - - 0.4 V ILI input leakage current VI = VCC or GND; VCC = 6.0 V - - ±1.0 µA IOZ 3-state OFF-state current VI = VIH or VIL; VCC = 6.0 V; VO = VCC or GND - - ±10.0 µA ICC quiescent supply current VI = VCC or GND; IO = 0 A; VCC = 6.0 V - - 160 µA 11. Dynamic characteristics Table 8: Dynamic characteristics GND = 0 V; tr = tf = 6 ns; CL = 50 pF; RL = 1000 Ω; see Figure 8. Symbol Parameter Conditions propagation delay An to Bn; Bn to An see Figure 5 Min Typ Max Unit Tamb = 25 °C tPHL, tPLH tPZH, tPZL tPHZ, tPLZ tTHL, tTLH 3-state output enable time OEA to An or Bn; OEB to An or Bn 3-state output disable time OEA to An or Bn; OEB to An or Bn output transition time VCC = 2.0 V - 22 90 ns VCC = 4.5 V - 8 18 ns VCC = 6.0 V - 6 15 ns VCC = 5.0 V; CL = 15 pF - 6 - ns VCC = 2.0 V - 50 150 ns VCC = 4.5 V - 18 30 ns VCC = 6.0 V - 14 26 ns VCC = 2.0 V - 61 165 ns VCC = 4.5 V - 22 33 ns VCC = 6.0 V - 18 28 ns VCC = 2.0 V - 14 60 ns VCC = 4.5 V - 5 12 ns - 4 10 ns - 26 - pF VCC = 2.0 V - - 115 ns VCC = 4.5 V - - 23 ns VCC = 6.0 V - - 20 ns see Figure 6 and 7 see Figure 6 and 7 see Figure 5 VCC = 6.0 V CPD power dissipation capacitance per transceiver VI = GND to VCC [1] Tamb = −40 °C to +85 °C tPHL, tPLH propagation delay An to Bn; Bn to An see Figure 5 9397 750 13808 Product data sheet © Koninklijke Philips Electronics N.V. 2004. All rights reserved. Rev. 03 — 12 November 2004 8 of 17 74HC243 Philips Semiconductors Quad bus transceiver; 3-state Table 8: Dynamic characteristics …continued GND = 0 V; tr = tf = 6 ns; CL = 50 pF; RL = 1000 Ω; see Figure 8. Symbol Parameter Conditions tPZH, tPZL 3-state output enable time OEA to An or Bn; OEB to An or Bn see Figure 6 and 7 tPHZ, tPLZ tTHL, tTLH 3-state output disable time OEA to An or Bn; OEB to An or Bn output transition time Min Typ Max Unit VCC = 2.0 V - - 190 ns VCC = 4.5 V - - 38 ns VCC = 6.0 V - - 33 ns VCC = 2.0 V - - 205 ns VCC = 4.5 V - - 41 ns VCC = 6.0 V - - 35 ns VCC = 2.0 V - - 75 ns VCC = 4.5 V - - 15 ns VCC = 6.0 V - - 13 ns see Figure 6 and 7 see Figure 5 Tamb = −40 °C to +125 °C tPHL, tPLH tPZH, tPZL tPHZ, tPLZ tTHL, tTLH [1] propagation delay An to Bn; Bn to An 3-state output enable time OEA to An or Bn; OEB to An or Bn 3-state output disable time OEA to An or Bn; OEB to An or Bn output transition time see Figure 5 VCC = 2.0 V - - 135 ns VCC = 4.5 V - - 27 ns VCC = 6.0 V - - 23 ns see Figure 6 and 7 VCC = 2.0 V - - 225 ns VCC = 4.5 V - - 45 ns VCC = 6.0 V - - 38 ns see Figure 6 and 7 VCC = 2.0 V - - 250 ns VCC = 4.5 V - - 50 ns VCC = 6.0 V - - 43 ns see Figure 5 VCC = 2.0 V - - 90 ns VCC = 4.5 V - - 18 ns VCC = 6.0 V - - 15 ns CPD is used to determine the dynamic power dissipation (PD in µW). PD = CPD × VCC2 × fi × N + ∑(CL × VCC2 × fo) where: fi = input frequency in MHz; fo = output frequency in MHz; CL = output load capacitance in pF; VCC = supply voltage in V; N = number of inputs switching; ∑(CL × VCC2 × fo) = sum of outputs. 9397 750 13808 Product data sheet © Koninklijke Philips Electronics N.V. 2004. All rights reserved. Rev. 03 — 12 November 2004 9 of 17 74HC243 Philips Semiconductors Quad bus transceiver; 3-state 12. Waveforms An, Bn input VM tPHL Bn, An output tPLH VM tTHL tTLH 001aab955 VM = 0.5 × VI. Fig 5. Waveforms showing the input (An and Bn) to output (Bn and An) propagation delays and the output transition times tr OEA input 10 % tf 90 % VM tPZL tPLZ output LOW to OFF OFF to LOW VM 10 % tPHZ tPZH 90 % output HIGH to OFF OFF to HIGH VM outputs enabled outputs disabled outputs enabled 001aab959 VM = 0.5 × VI. Fig 6. Waveforms showing the 3-state enable and disable times for input OEA 9397 750 13808 Product data sheet © Koninklijke Philips Electronics N.V. 2004. All rights reserved. Rev. 03 — 12 November 2004 10 of 17 74HC243 Philips Semiconductors Quad bus transceiver; 3-state tr tf 90 % OEB input VM 10 % tPLZ tPZL output LOW to OFF OFF to LOW VM 10 % tPHZ tPZH 90 % output HIGH to OFF OFF to HIGH VM outputs enabled outputs disabled outputs enabled 001aab956 VM = 0.5 × VI. Fig 7. Waveforms showing the 3-state enable and disable times for input OEB S1 VCC PULSE GENERATOR VI RL = 1000 Ω VO VCC open GND D.U.T. CL RT mna232 Test data is given in Table 9. Definitions for test circuit: RL = Load resistor. CL = Load capacitance including jig and probe capacitance. RT = Termination resistance should be equal to the output impedance Zo of the pulse generator. Fig 8. Load circuitry for switching times Table 9: Test data Supply Input Load S1 VCC VI tr = tf CL RL tPZL, tPLZ tPZH, tPHZ tPHL, tPLH 2.0 V VCC 6 ns 50 pF 1 kΩ VCC GND open 4.5 V VCC 6 ns 50 pF 1 kΩ VCC GND open 6.0 V VCC 6 ns 50 pF 1 kΩ VCC GND open 5.0 V VCC 6 ns 15 pF 1 kΩ VCC GND open 9397 750 13808 Product data sheet © Koninklijke Philips Electronics N.V. 2004. All rights reserved. Rev. 03 — 12 November 2004 11 of 17 74HC243 Philips Semiconductors Quad bus transceiver; 3-state 13. Package outline DIP14: plastic dual in-line package; 14 leads (300 mil) SOT27-1 ME seating plane D A2 A A1 L c e Z w M b1 (e 1) b MH 8 14 pin 1 index E 1 7 0 5 10 mm scale DIMENSIONS (inch dimensions are derived from the original mm dimensions) UNIT A max. A1 min. A2 max. b b1 c D (1) E (1) e e1 L ME MH w Z (1) max. mm 4.2 0.51 3.2 1.73 1.13 0.53 0.38 0.36 0.23 19.50 18.55 6.48 6.20 2.54 7.62 3.60 3.05 8.25 7.80 10.0 8.3 0.254 2.2 inches 0.17 0.02 0.13 0.068 0.044 0.021 0.015 0.014 0.009 0.77 0.73 0.26 0.24 0.1 0.3 0.14 0.12 0.32 0.31 0.39 0.33 0.01 0.087 Note 1. Plastic or metal protrusions of 0.25 mm (0.01 inch) maximum per side are not included. REFERENCES OUTLINE VERSION IEC JEDEC JEITA SOT27-1 050G04 MO-001 SC-501-14 EUROPEAN PROJECTION ISSUE DATE 99-12-27 03-02-13 Fig 9. Package outline SOT27-1 (DIP14) 9397 750 13808 Product data sheet © Koninklijke Philips Electronics N.V. 2004. All rights reserved. Rev. 03 — 12 November 2004 12 of 17 74HC243 Philips Semiconductors Quad bus transceiver; 3-state SO14: plastic small outline package; 14 leads; body width 3.9 mm SOT108-1 D E A X c y HE v M A Z 8 14 Q A2 A (A 3) A1 pin 1 index θ Lp 1 L 7 e detail X w M bp 0 2.5 5 mm scale DIMENSIONS (inch dimensions are derived from the original mm dimensions) UNIT A max. A1 A2 A3 bp c D (1) E (1) e HE L Lp Q v w y Z (1) mm 1.75 0.25 0.10 1.45 1.25 0.25 0.49 0.36 0.25 0.19 8.75 8.55 4.0 3.8 1.27 6.2 5.8 1.05 1.0 0.4 0.7 0.6 0.25 0.25 0.1 0.7 0.3 0.01 0.019 0.0100 0.35 0.014 0.0075 0.34 0.16 0.15 0.010 0.057 inches 0.069 0.004 0.049 0.05 0.244 0.039 0.041 0.228 0.016 0.028 0.024 0.01 0.01 0.028 0.004 0.012 θ o 8 o 0 Note 1. Plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included. REFERENCES OUTLINE VERSION IEC JEDEC SOT108-1 076E06 MS-012 JEITA EUROPEAN PROJECTION ISSUE DATE 99-12-27 03-02-19 Fig 10. Package outline SOT108-1 (SO14) 9397 750 13808 Product data sheet © Koninklijke Philips Electronics N.V. 2004. All rights reserved. Rev. 03 — 12 November 2004 13 of 17 74HC243 Philips Semiconductors Quad bus transceiver; 3-state SSOP14: plastic shrink small outline package; 14 leads; body width 5.3 mm D SOT337-1 E A X c y HE v M A Z 8 14 Q A2 A (A 3) A1 pin 1 index θ Lp L 7 1 detail X w M bp e 0 2.5 5 mm scale DIMENSIONS (mm are the original dimensions) UNIT A max. A1 A2 A3 bp c D (1) E (1) e HE L Lp Q v w y Z (1) θ mm 2 0.21 0.05 1.80 1.65 0.25 0.38 0.25 0.20 0.09 6.4 6.0 5.4 5.2 0.65 7.9 7.6 1.25 1.03 0.63 0.9 0.7 0.2 0.13 0.1 1.4 0.9 8 o 0 o Note 1. Plastic or metal protrusions of 0.25 mm maximum per side are not included. OUTLINE VERSION SOT337-1 REFERENCES IEC JEDEC JEITA MO-150 EUROPEAN PROJECTION ISSUE DATE 99-12-27 03-02-19 Fig 11. Package outline SOT337-1 (SSOP14) 9397 750 13808 Product data sheet © Koninklijke Philips Electronics N.V. 2004. All rights reserved. Rev. 03 — 12 November 2004 14 of 17 74HC243 Philips Semiconductors Quad bus transceiver; 3-state 14. Revision history Table 10: Revision history Document ID Release date Data sheet status Change notice Doc. number Supersedes 74HC243_3 20041112 Product data sheet - 74HC_HCT243_CNV_2 Modifications: 9397 750 13808 • The format of this data sheet has been redesigned to comply with the current presentation and information standard of Philips Semiconductors. • • Removed type number 74HCT243. Inserted family specification. 74HC_HCT243_CNV_2 19970828 Product specification - - 74HC_HCT243_1 74HC_HCT243_1 19901201 Product specification - - - 9397 750 13808 Product data sheet © Koninklijke Philips Electronics N.V. 2004. All rights reserved. Rev. 03 — 12 November 2004 15 of 17 74HC243 Philips Semiconductors Quad bus transceiver; 3-state 15. Data sheet status Level Data sheet status [1] Product status [2] [3] Definition I Objective data Development This data sheet contains data from the objective specification for product development. Philips Semiconductors reserves the right to change the specification in any manner without notice. II Preliminary data Qualification This data sheet contains data from the preliminary specification. Supplementary data will be published at a later date. Philips Semiconductors reserves the right to change the specification without notice, in order to improve the design and supply the best possible product. III Product data Production This data sheet contains data from the product specification. Philips Semiconductors reserves the right to make changes at any time in order to improve the design, manufacturing and supply. Relevant changes will be communicated via a Customer Product/Process Change Notification (CPCN). [1] Please consult the most recently issued data sheet before initiating or completing a design. [2] The product status of the device(s) described in this data sheet may have changed since this data sheet was published. The latest information is available on the Internet at URL http://www.semiconductors.philips.com. [3] For data sheets describing multiple type numbers, the highest-level product status determines the data sheet status. 16. Definitions 17. Disclaimers Short-form specification — The data in a short-form specification is extracted from a full data sheet with the same type number and title. For detailed information see the relevant data sheet or data handbook. Life support — These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application. Limiting values definition — Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 60134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability. Application information — Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or modification. Right to make changes — Philips Semiconductors reserves the right to make changes in the products - including circuits, standard cells, and/or software - described or contained herein in order to improve design and/or performance. When the product is in full production (status ‘Production’), relevant changes will be communicated via a Customer Product/Process Change Notification (CPCN). Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise specified. 18. Contact information For additional information, please visit: http://www.semiconductors.philips.com For sales office addresses, send an email to: [email protected] 9397 750 13808 Product data sheet © Koninklijke Philips Electronics N.V. 2004. All rights reserved. Rev. 03 — 12 November 2004 16 of 17 74HC243 Philips Semiconductors Quad bus transceiver; 3-state 19. Contents 1 2 3 4 5 6 6.1 6.2 7 7.1 8 9 10 11 12 13 14 15 16 17 18 General description . . . . . . . . . . . . . . . . . . . . . . 1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Quick reference data . . . . . . . . . . . . . . . . . . . . . 2 Ordering information . . . . . . . . . . . . . . . . . . . . . 2 Functional diagram . . . . . . . . . . . . . . . . . . . . . . 3 Pinning information . . . . . . . . . . . . . . . . . . . . . . 4 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4 Functional description . . . . . . . . . . . . . . . . . . . 5 Function table . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 5 Recommended operating conditions. . . . . . . . 6 Static characteristics. . . . . . . . . . . . . . . . . . . . . 6 Dynamic characteristics . . . . . . . . . . . . . . . . . . 8 Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Package outline . . . . . . . . . . . . . . . . . . . . . . . . 12 Revision history . . . . . . . . . . . . . . . . . . . . . . . . 15 Data sheet status . . . . . . . . . . . . . . . . . . . . . . . 16 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Contact information . . . . . . . . . . . . . . . . . . . . 16 © Koninklijke Philips Electronics N.V. 2004 All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights. Date of release: 12 November 2004 Document number: 9397 750 13808 Published in The Netherlands