SN74LV244AMDWREP

SN74LV244A-EP OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS www.ti.com SCLS695 – JANUARY 2006 FEATURES • • • • • • • • • • • • (1) Controlled Baseline – One Assembly/Test Site, One Fabrication Site Extended Temperature Performance of –55°C to 125°C Enhanced Diminishing Manufacturing Sources (DMS) Support Enhanced Product-Change Notification Qualification Pedigree (1) 2-V to 5.5-V VCC Operation Max tpd of 6.5 ns at 5 V Typical VOLP (Output Ground Bounce) 2.3 V at VCC = 3.3 V, TA = 25°C Supports Mixed-Mode Voltage Operation on All Ports Ioff Supports Partial-Power-Down Mode Operation Latch-Up Performance Exceeds 250 mA Per JESD 17 • ESD Protection Exceeds JESD 22 – 2000-V Human-Body Model (A114-A) – 200-V Machine Model (A115-A) – 1000-V Charged-Device Model (C101) DW PACKAGE (TOP VIEW) 1OE 1A1 2Y4 1A2 2Y3 1A3 2Y2 1A4 2Y1 GND 1 20 2 19 3 18 4 5 17 16 6 15 7 14 8 13 12 9 10 11 VCC 2OE 1Y1 2A4 1Y2 2A3 1Y3 2A2 1Y4 2A1 Component qualification in accordance with JEDEC and industry standards to ensure reliable operation over an extended temperature range. This includes, but is not limited to, Highly Accelerated Stress Test (HAST) or biased 85/85, temperature cycle, autoclave or unbiased HAST, electromigration, bond intermetallic life, and mold compound life. Such qualification testing should not be viewed as justifying use of this component beyond specified performance and environmental limits. DESCRIPTION/ORDERING INFORMATION This octal buffer/line driver is designed for 2-V to 5.5-V VCC operation. The SN74LV244A-EP is designed specifically to improve both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. The device is organized as two 4-bit line drivers with separate output-enable (OE) inputs. When OE is low, the device passes data from the A inputs to the Y outputs. When OE is high, the outputs are in the high-impedance state. To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the devices when they are powered down. ORDERING INFORMATION PACKAGE (1) TA –55°C to 125°C (1) SOIC – DW Reel of 2000 ORDERABLE PART NUMBER SN74LV244AMDWREP TOP-SIDE MARKING LV244AMEP Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2006, Texas Instruments Incorporated SN74LV244A-EP OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS www.ti.com SCLS695 – JANUARY 2006 FUNCTION TABLE (EACH BUFFER) INPUTS OE A OUTPUT Y L H H L L L H X Z LOGIC DIAGRAM (POSITIVE LOGIC) 1OE 1A1 1A2 1A3 1A4 1 2OE 2 18 4 16 6 14 8 12 1Y1 2A1 1Y2 2A2 1Y3 2A3 1Y4 2A4 19 11 9 13 7 15 5 17 3 2Y1 2Y2 2Y3 2Y4 Absolute Maximum Ratings (1) over operating free-air temperature range (unless otherwise noted) MIN MAX VCC Supply voltage range –0.5 7 V VI Input voltage range (2) –0.5 7 V –0.5 7 V –0.5 VCC + 0.5 state (2) UNIT VO Voltage range applied to any output in the high-impedance or power-off VO Output voltage range applied in the high or low state (2) (3) IIK Input clamp current VI < 0 –20 mA IOK Output clamp current VO < 0 –50 mA IO Continuous output current VO = 0 to VCC ±35 mA ±70 mA 58 °C/W 150 °C Continuous current through VCC or GND θJA Package thermal Tstg Storage temperature range (1) (2) (3) (4) 2 impedance (4) –65 V Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. The input and output negative-voltage ratings may be exceeded if the input and output current ratings are observed. This value is limited to 5.5 V maximum. The package thermal impedance is calculated in accordance with JESD 51-7. SN74LV244A-EP OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS www.ti.com SCLS695 – JANUARY 2006 Recommended Operating Conditions VCC (1) Supply voltage VCC = 2 V VIH High-level input voltage MIN MAX 2 5.5 Low-level input voltage VI Input voltage VO Output voltage VCC = 2.3 V to 2.7 V VCC × 0.7 VCC = 3 V to 3.6 V VCC × 0.7 VCC = 4.5 V to 5.5 V VCC × 0.7 VCC = 2.3 V to 2.7 V VCC × 0.3 VCC = 3 V to 3.6 V VCC × 0.3 5.5 High or low state 0 VCC 3-state 0 5.5 VCC = 2.3 V to 2.7 V ∆t/∆v Input transition rise or fall rate (1) Operating free-air temperature µA –8 mA –16 µA 50 VCC = 2.3 V to 2.7 V 2 VCC = 3 V to 3.6 V 8 VCC = 4.5 V to 5.5 V 16 VCC = 2.3 V to 2.7 V 200 VCC = 3 V to 3.6 V 100 VCC = 4.5 V to 5.5 V TA V –2 VCC = 3 V to 3.6 V VCC = 2 V Low-level output current V –50 VCC = 4.5 V to 5.5 V IOL V VCC × 0.3 0 VCC = 2 V High-level output current V 0.5 VCC = 4.5 V to 5.5 V IOH V 1.5 VCC = 2 V VIL UNIT mA ns/V 20 –55 125 °C All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report, Implications of Slow or Floating CMOS Inputs, literature number SCBA004. 3 SN74LV244A-EP OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS www.ti.com SCLS695 – JANUARY 2006 Electrical Characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER VOH TEST CONDITIONS VCC 2 V to 5.5 V IOH = –2 mA 2.3 V IOH = –8 mA 3V 2.48 4.5 V 3.8 IOH = –16 mA VOL MIN IOH = –50 µA TYP MAX UNIT VCC – 0.1 2 V IOL = 50 µA 2 V to 5.5 V IOL = 2 mA 2.3 V 0.4 IOL = 8 mA 3V 0.44 IOL = 16 mA 4.5 V 0.55 0.1 V II VI = 5.5 V or GND 0 to 5.5 V ±1 µA IOZ VO = VCC or GND 5.5 V ±5 µA ICC VI = VCC or GND, IO = 0 5.5 V 20 µA Ioff VI or VO = 0 to 5.5 V 0 5 µA Ci VI = VCC or GND 3.3 V 2.3 pF Switching Characteristics over recommended operating free-air temperature range, VCC = 2.5 V ± 0.2 V (unless otherwise noted) (see Figure 1) PARAMETER FROM (INPUT) TO (OUTPUT) tpd A Y ten OE Y tdis OE Y LOAD CAPACITANCE TA = 25°C MIN CL = 50 pF MIN MAX 15.3 1 18 ns 10.8 17.8 1 21 ns 13.4 19.2 1 21 ns 2 ns TYP MAX 9.5 tsk(o) 2 UNIT Switching Characteristics over recommended operating free-air temperature range, VCC = 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 1) FROM (INPUT) TO (OUTPUT) tpd A ten OE tdis OE Y PARAMETER tsk(o) 4 LOAD CAPACITANCE TA = 25°C MIN MAX UNIT 11.9 1 13.5 ns 14.1 1 16 ns 16 1 18 ns 1.5 ns TYP MAX Y 6.8 Y 7.8 CL = 50 pF MIN 11 1.5 SN74LV244A-EP OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS www.ti.com SCLS695 – JANUARY 2006 Switching Characteristics over recommended operating free-air temperature range, VCC = 5 V ± 0.5 V (unless otherwise noted) (see Figure 1) PARAMETER FROM (INPUT) TO (OUTPUT) tpd A Y ten OE Y tdis OE Y LOAD CAPACITANCE CL = 50 pF TA = 25°C MIN MIN MAX 7.5 1 8.5 ns 5.6 9.3 1 10.5 ns 8.8 14.2 1 15.5 ns 1 ns TYP MAX 4.9 tsk(o) 1 UNIT Noise Characteristics (1) VCC = 3.3 V, CL = 50 pF, TA = 25°C PARAMETER MIN TYP MAX UNIT VOL(P) Quiet output, maximum dynamic VOL 0.55 V VOL(V) Quiet output, minimum dynamic VOL –0.5 V VOH(V) Quiet output, minimum dynamic VOH 2.9 V VIH(D) High-level dynamic input voltage VIL(D) Low-level dynamic input voltage (1) 2.31 V 0.99 V TYP UNIT Characteristics are for surface-mount packages only. Operating Characteristics TA = 25°C PARAMETER Cpd Power dissipation capacitance TEST CONDITIONS CL = 50 pF, f = 10 MHz VCC 3.3 V 14 5V 16 pF 5 SN74LV244A-EP OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS www.ti.com SCLS695 – JANUARY 2006 PARAMETER MEASUREMENT INFORMATION VCC From Output Under Test Test Point RL = 1 kΩ From Output Under Test CL (see Note A) S1 Open TEST GND CL (see Note A) LOAD CIRCUIT FOR TOTEM-POLE OUTPUTS S1 tPLH/tPHL tPLZ/tPZL tPHZ/tPZH Open Drain Open VCC GND VCC LOAD CIRCUIT FOR 3-STATE AND OPEN-DRAIN OUTPUTS VCC 50% VCC Timing Input tw tsu VCC 50% VCC Input 50% VCC 0V th VCC 50% VCC Data Input 50% VCC 0V 0V VOLTAGE WAVEFORMS PULSE DURATION VOLTAGE WAVEFORMS SETUP AND HOLD TIMES VCC 50% VCC Input tPLH 0V tPHL VOH In-Phase Output 50% VCC tPHL Out-of-Phase Output 50% VCC 50% VCC VOL Output Waveform 1 S1 at VCC (see Note B) VOH 50% VCC VOL VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES INVERTING AND NONINVERTING OUTPUTS 50% VCC 50% VCC 0V tPZL tPLZ ≈VCC 50% VCC tPZH tPLH 50% VCC VCC Output Control Output Waveform 2 S1 at GND (see Note B) VOL + 0.3 V VOL tPHZ 50% VCC VOH − 0.3 V VOH ≈0 V VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES LOW- AND HIGH-LEVEL ENABLING NOTES: A. CL includes probe and jig capacitance. B. Waveform 1 is for an output with internal conditions such that the output is low, except when disabled by the output control. Waveform 2 is for an output with internal conditions such that the output is high, except when disabled by the output control. C. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO = 50 Ω, tr ≤ 3 ns, tf ≤ 3 ns. D. The outputs are measured one at a time, with one input transition per measurement. E. tPLZ and tPHZ are the same as tdis. F. tPZL and tPZH are the same as ten. G. tPHL and tPLH are the same as tpd. H. All parameters and waveforms are not applicable to all devices. Figure 1. Load Circuits and Voltage Waveforms 6 PACKAGE OPTION ADDENDUM www.ti.com 10-Dec-2020 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan (2) Lead finish/ Ball material MSL Peak Temp Op Temp (°C) (3) Device Marking (4/5) (6) SN74LV244AMDWREP ACTIVE SOIC DW 20 2000 RoHS & Green NIPDAU Level-1-260C-UNLIM -55 to 125 LV244AMEP V62/06604-01XE ACTIVE SOIC DW 20 2000 RoHS & Green NIPDAU Level-1-260C-UNLIM -55 to 125 LV244AMEP (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of