74LVCH244A OCTAL BUFFER/LINE DRIVER WITH BUS HOLD / 3 STATE OUTPUTS Description Pin Assignments The 74LVCH244A provides two 4-bit line drivers with separate output-enable (OE) inputs. When OE is low, the device passes data 1OE 1 20 in the high-impedance state. Vcc from the A inputs to the Y outputs. When OE is high, the outputs are The device is designed for operation with a power supply range of The inputs are tolerant to 5.5V allowing this device to be used in a mixed voltage environment. The device is fully specified for partial power down applications using IOFF. The IOFF circuitry disables the output preventing damaging current backflow when the device is 10 11 Bus hold circuitry holds unused or un-driven inputs at a high or low 2A1 powered down. GND NEW PRODUCT 1.65V to 3.6V. logic state. The use of external pull-up or pull down resistors is not recommended. Features Applications • • Supply Voltage Range from 1.65V to 3.6V Sinks or Sources 24mA at VCC = 3V • General Purpose Logic • Bus Driving • • CMOS Low Power Consumption IOFF Supports Partial-Power Down Operation • Power Down Signal Isolation • Wide array of products such as: • Inputs or Outputs Accept up to 5.5V • Inputs Can be Driven by 3.3V or 5V Allowing for Mixed Voltage Networking Computer Peripherals, Hard Drives, CD/DVD ROM Applications • • PCs, Notebooks, Netbooks, Ultrabooks Schmitt Trigger Action at All Inputs Typical VOLP (Quiet Output Ground Bounce) less than 0.8V with TV, DVD, DVR, set top box VCC = 3.3V and TA = +25°C • Typical VOHV (Quiet Output Dynamic VOH) greater than 2.0V with VCC = 3.3V and TA = +25°C • ESD Protection Tested per JESD 22 • Exceeds 200-V Machine Model (A115) • Exceeds 2000-V Human Body Model (A114) • Exceeds 1000-V Charged Device Model (C101) • Latch-Up Exceeds 250mA per JESD 78, Class I • Totally Lead-Free & Fully RoHS compliant (Notes 1 & 2) • Halogen and Antimony Free. Green” Device (Note 3) Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds. 74LVCH244A Document number: DS35889 Rev. 1 - 2 1 of 10 www.diodes.com July 2014 © Diodes Incorporated 74LVCH244A Ordering Information 74 LVC Logic Device Function NEW PRODUCT 74 : Logic Prefix H244 : Package OCTAL BUFFER/LINE DRIVER WITH BUS HOLD / 3 STATE OUTPUTS Part Number Package Code Package (Notes 4 & 5) 74LVCH244AT20-13 T20 TSSOP-20 74LVCH244AQ20-13 Q20 V-QFN4525-20 Notes: H244A xxx -13 Packing T20 : TSSOP-20 Q20 : QFN-20 Package Size -13 : 13” Tape & Reel Quantity 6.4mm X 6.5mm X 1.2mm 0.65 mm lead pitch 2.5mm X 4.5mm X 0.95mm 0.50 mm lead pitch 13” Tape and Reel Part Number Suffix 2500/Tape & Reel -13 2500/Tape & Reel -13 4. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf. 5. V-QFN4525-20 is a JEDEC recognized naming convention that specifies the package thickness category as V and the number 4525 describes the package as 4.5mm X 2.5mm. Pin Descriptions Pin Number Pin Name 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 1OE 20 1A1 2Y4 1A2 2Y3 1A3 2Y2 1A4 2Y1 GND 2A1 1Y4 2A2 1Y3 2A3 1Y2 2A4 1Y1 2OE VCC Logic Diagram Description Output Enable 1 Data Input Data Output Data Input Data Output Data Input Data Output Data Input Data Output Ground Data Input Data Output Data Input Data Output Data Input Data Output Data Input Data Output Function Table OE L L H Output Enable 2 Supply Voltage 74LVCH244A Document number: DS35889 Rev. 1 - 2 2 of 10 www.diodes.com (Each 4-Bit Buffer) INPUTS OUTPUT A Y H H L L X Z July 2014 © Diodes Incorporated 74LVCH244A Absolute Maximum Ratings (Notes 6 & 7) Symbol ESD HBM ESD CDM ESD MM Rating 2 1 200 Unit kV kV V V Supply Voltage Range -0.5 to +7.0 VI Input Voltage Range -0.5 to +7.0 V IIK Input Clamp Current VI < 0V -20 mA IOK Output Clamp Current VO < 0V -50 mA IO Continuous Output Current -0.5V < VO VCC +0.5V ±50 mA ICC Continuous Current Through VCC 100 mA VCC NEW PRODUCT Description Human Body Model ESD Protection Charged Device Model ESD Protection Machine Model ESD Protection -100 mA Operating Junction Temperature Continuous Current Through GND -40 to +150 °C TSTG Storage Temperature -65 to +150 °C PTOT Total Power Dissipation 500 mW IGND TJ Notes: 6. Stresses beyond the absolute maximum may result in immediate failure or reduced reliability. These are stress values and device operation should be within recommend values. 7. Forcing the maximum allowed voltage could cause a condition exceeding the maximum current or conversely forcing the maximum current could cause a condition exceeding the maximum voltage. The ratings of both current and voltage must be maintained within the controlled range. Recommended Operating Conditions Symbol VCC Parameter Supply Voltage VI Input Voltage VO Output Voltage IOH IOL High-Level Output Current Low-Level Output Current Conditions Operating Data Retention Only — Min 1.65 1.5 Max 3.6 — Unit V V 0 5.5 V — 0 VCC V VCC = 1.65V — -4 VCC = 2.3V — -8 VCC = 2.7V — -12 VCC = 3.0V — -24 VCC = 1.65V — 4 VCC = 2.3V — 8 VCC = 2.7V — 12 VCC = 3.0V — 24 mA mA ∆t/∆V Input Transition Rise or Fall Rate — 10 ns/V TA Operating Free-Air Temperature -40 +125 °C 74LVCH244A Document number: DS35889 Rev. 1 - 2 3 of 10 www.diodes.com July 2014 © Diodes Incorporated 74LVCH244A Electrical Characteristics NEW PRODUCT Symbol Parameter VIH High-Level Input Voltage VIL Low-Level input voltage VOH VOL IOFF II Test Conditions 1.65V to 1.95V 2.3V to 2.7V 3.0V to 3.6V ∆ICC Ci CO VCC X 0.65 1.7 2 — V — — — — — VCC X 0.35 0.7 0.8 — — VCC X 0.35 0.7 0.8 IOH = -5μA 1.65V to 5.5V VCC-0.2 — VCC-0.3 — IOH = -4mA 1.65V 1.2 — 1.05 — IOH = -8mA 2.3 V 1.7 — 1.65 — IOH = -12mA 2.7V 3.0V 2.2 2.4 — — 2.05 2.48 — — IOH = -24mA 3.0V 2.3 — 2.0 — IOL = 100μA 1.65V to 5.5V — 0.2 — 0.3 IOL = 4mA Low-Level Output IOL = 8mA Voltage IOL = 12mA 1.65V — 0.45 — 0.65 2.3V — 0.60 — 0.80 2.7V — 0.40 — 0.60 IOL = 24mA 3.0V — 0.55 — 0.80 0 — ±10 — 20 μA 0 to 5.5V — ±5 — ± 20 μA 25 — 15 — -25 — -15 — 45 — 35 — -45 — -35 — 75 — 60 — -75 — High-Level Output Voltage Power Down Leakage Current Input Current Control Pins VI or VO = 0 or 5.5V VI = GND or 5.5V Input Current Required to Change State VI = 0.7V VI = 1.7V VI = 0.8V Z-State Current 1.65V 2.3V 3.0V — V V V μA -60 — VI = 0 or 3.6V 3.6V — ±500 — ±500 VI =GND or 5.5V VO = 0 or 5.5V 3.6V — ±5 — ± 20 uA 6.0V — 10 — 40 μA 2.7V to 3.6V — 500 — 5000 μA VI = 2.0V ICC — — Unit 2.3V to 2.7V 3.0V to 3.6V VI = 1.07 IOZ — VCC X 0.65 1.7 2 TA = -40°C to +125°C Min Max 1.65V to 1.95V VI = 0.58V II(HOLD) TA = -40°C to +85°C Min Max VCC VI = GND or VCC, IO = 0 Additional Supply One input at Current VCC -0.6V IO = 0A Input VI = GND or VCC Capacitance Output VO = GND or VCC Capacitance Supply Current 74LVCH244A Document number: DS35889 Rev. 1 - 2 3.3V 4.0 typical 4.0 typical 3.3V 5.5 typical 5.5 typical pF 4 of 10 www.diodes.com July 2014 © Diodes Incorporated 74LVCH244A Switching Characteristics Symbol Parameter NEW PRODUCT tPD tEN Test Conditions Propagation Delay AN to YN Figure 1 Enable Time Figure 1 OE to YN Disable Time tDIS OE to YN Figure 1 Output Skew Time tsk(0) TA = +25°C VCC 1.8V ± 0.15V 2.5V ± 0.2V 2.7V 3.3V ± 0.3V 1.8V ± 0.15V 2.5V ± 0.2V 2.7V 3.3V ± 0.3V 1.8V ± 0.15V 2.5V ± 0.2V 2.7V 3.3V ± 0.3V 3.3V ± 0.3V TA = -40°C to +85°C Min Max 1 12.2 1 8.4 1 8.9 1.5 8.2 1 12.6 1 9.6 1 8.6 1.5 7.6 1 12.1 TA = -40°C to +125°C Min Max 1 12.4 1 10 1 9 1.5 8.3 1 14.1 1 11.7 1 10.3 1.5 9.4 1 13.6 Min 1 1 1 1.5 1 1 1 1.5 1 Typ 5.9 4.2 4.2 3.9 6.4 4.6 5 4.5 5.8 Max 12 7.8 8.2 7.7 12.1 9.1 8.4 7.4 11.6 1 3.7 7.3 1 7.8 1 9.9 1 1.5 3.8 3.8 6.6 6.3 1 1.5 6.8 6.5 1 1.5 8.6 8 — — 1.0 — — — 1.5 Unit ns ns ns ns Operating Characteristics TA = +25°C Symbol Parameter Power dissipation capacitance per gate Cpd Test Conditions F = 10 MHz Outputs Enabled Typ VCC 1.8V ± 0.15V 2.5V ± 0.2V 3.3V ± 0.3V Unit 9.9 pF 10.2 10.6 Package Characteristics Symbol θJA θJC θJA θJC Note: Parameter Thermal Resistance Junction-to-Ambient Thermal Resistance Junction-to-Case Thermal Resistance Junction-to-Ambient Thermal Resistance Junction-to-Case Package Test Conditions Min Typ Max Unit TSSOP-20 (Note 8) — 74 — °C/W TSSOP-20 (Note 8) — 15 — °C/W V-QFN4525-20 (Note 8) — 67 — °C/W V-QFN4525-20 (Note 8) — 20 — °C/W 8. Test conditions for TSSOP-20 and V-QFN4525-20: Devices mounted on 4 layer FR-4 substrate PC board, 2oz copper, with minimum recommended pad layout per JESD 51-7. 74LVCH244A Document number: DS35889 Rev. 1 - 2 5 of 10 www.diodes.com July 2014 © Diodes Incorporated 74LVCH244A NEW PRODUCT Parameter Measurement Information TEST tPLH/tPHL tPLZ/tPZL tPHZ/tPZH Inputs VCC VM VLOAD CL ≤2ns VCC/2 2 x VCC ≤2ns VCC/2 2 x VCC 2.7V ≤2.5ns 1.5V 2.7V ≤2.5ns 1.5V VI tr/tf 1.8V ± 0.15V VCC 2.5V ± 0.2V VCC 2.7V 3.3V ± 0.3V S1 Open VLOAD GND RL V∆ 30pF 1KΩ 0.15V 30pF 500Ω 0.15V 6V 50pF 500Ω 0.3V 6V 50pF 500Ω 0.3V Voltage Waveform Pulse Duration Voltage Waveform Enable and Disable Times Low and High Level Enabling Voltage Waveform Propagation Delay Times Inverting and Non Inverting Outputs Notes: A. Includes test lead and test apparatus capacitance. B. All pulses are supplied at pulse repetition rate ≤ 10 MHz. C. Inputs are measured separately one transition per measurement. D. tPLZ and tPHZ are the same as tdis. E. tPZL and tPZH are the same as tEN0 F. tPLH and tPHL are the same as tPD. Figure 1 Load Circuit and Voltage Waveforms 74LVCH244A Document number: DS35889 Rev. 1 - 2 6 of 10 www.diodes.com July 2014 © Diodes Incorporated 74LVCH244A Marking Information (1) TSSOP20 NEW PRODUCT 74LVCH244A Part Number 74LVCH244AT20 (2) Package TSSOP-20 QFN-20 (V-QFN4525-20) ( Top View ) Logo Part Number YY : Year : 08, 09,10~ WW : Week : 01~52; 52 74LVCH244A represents 52 and 53 week X X : Internal Codes YY WW X X terminal 1 index area Part Number 74LVCH244AQ20 74LVCH244A Document number: DS35889 Rev. 1 - 2 Package V-QFN4525-20 7 of 10 www.diodes.com July 2014 © Diodes Incorporated 74LVCH244A Package Outline Dimensions Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for the latest version. (1) TSSOP-20 NEW PRODUCT D θ2 E1 E 0.25 Gauge Plane θ3 PIN 1 ID MARK Seating Plane θ1 e L DETAIL L1 A2 b (2) A TSSOP-20 Dim Min Max Typ A 1.20 A1 0.05 0.15 A2 0.80 1.05 b 0.19 0.30 c 0.09 0.20 D 6.40 6.60 6.50 E 6.20 6.60 6.40 E1 4.30 4.50 4.40 e 0.65 BSC L 0.45 0.75 0.60 L1 1.0 REF 0° 8° θ1 10° 14° 12° θ2 10° 14° 12° θ3 All Dimensions in mm A1 QFN-20 (V-QFN4525-20) 1 A 3 A A e n a l P g n i t a e S D I 1 # n i P ︶ D ︵ e x 4 1 Z ︵ ︶ E 2 E 2 D x 0 2 L ︵ Document number: DS35889 Rev. 1 - 2 ︵ x 0 2 74LVCH244A b x 4 Z ︵ ︶ ︶ V-QFN4525-20 Dim Min Max Typ A 0.75 0.85 0.80 A1 0.00 0.05 0.02 A3 0.15 b 0.18 0.30 0.23 D 4.45 4.55 4.50 D2 2.85 3.15 3.00 E 2.45 2.55 2.50 E2 0.85 1.15 1.00 e 0.50BSC L 0.30 0.50 0.40 Z 0.385 Z1 0.885 All Dimensions in mm ︶ 8 of 10 www.diodes.com July 2014 © Diodes Incorporated 74LVCH244A Suggested Pad Layout Please see AP02001 at http://www.diodes.com/datasheets/ap02001.pdf for the latest version. (1) TSSOP-20 X (20x) NEW PRODUCT C Y1 Dimensions C X X1 Y Y1 Y2 Y2 Y (20x) Value (in mm) 0.650 0.420 6.270 1.789 4.160 7.720 X1 (2) QFN-20 (V-QFN4525-20) 4 X 3 X 1 X 2 X 3 Y 1 Y Dimensions C X X1 X2 X3 X4 Y Y1 Y2 Y3 Value (in mm) 0.500 0.330 0.600 3.200 3.830 4.800 0.600 1.200 0.830 2.800 2 Y Y Document number: DS35889 Rev. 1 - 2 C X 74LVCH244A 9 of 10 www.diodes.com July 2014 © Diodes Incorporated 74LVCH244A IMPORTANT NOTICE NEW PRODUCT DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. 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