SN74AHCT244QDWR

SN74AHCT244Q SGDS024A – FEBRUARY 2002 – REVISED MAY 2023 SN74AHCT244Q Octal Buffer/driver with 3-State Outputs 1 Features 2 Description • This octal buffer/driver is designed specifically to improve both the performance and density of 3state memory-address drivers, clock drivers, and busoriented receivers and transmitters. • • • Q devices meet automotive performance requirements Customer-specific configuration control can be supported along with major-change approval EPIC™ (Enhanced-Performance Implanted CMOS) process Inputs are TTL-Voltage compatible Latch-Up performance exceeds 250 mA per JESD 17 Package Information PART NUMBER SN74AHCT244Q PACKAGE1 BODY SIZE (NOM) DW (SOIC, 20) 12.80 mm × 7.50 mm PW (TSSOP, 20) 6.5 mm × 4.4 mm 1. For all available packages, see the orderable addendum at the end of the data sheet. An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. UNLESS OTHERWISE NOTED, this document contains PRODUCTION DATA. SN74AHCT244Q www.ti.com SGDS024A – FEBRUARY 2002 – REVISED MAY 2023 Table of Contents 1 Features............................................................................1 2 Description.......................................................................1 3 Revision History.............................................................. 2 4 Pin Configuration and Functions...................................3 5 Specifications.................................................................. 4 5.1 Absolute Maximum Ratings........................................ 4 5.2 Recommended Operating Conditions.........................4 5.3 Thermal Information....................................................4 5.4 Electrical Characteristics.............................................5 5.5 Switching Characteristics............................................5 5.6 Noise Characteristics.................................................. 6 5.7 Operating Characteristics........................................... 6 6 Parameter Measurement Information............................ 7 7 Detailed Description........................................................8 7.1 Overview..................................................................... 8 7.2 Functional Block Diagram........................................... 8 7.3 Device Functional Modes............................................8 3 Revision History NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision * (February 2002) to Revision A (May 2023) Page • Added Package Information table, Pin Functions table, and Thermal Information table....................................1 2 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated Product Folder Links: SN74AHCT244Q SN74AHCT244Q www.ti.com SGDS024A – FEBRUARY 2002 – REVISED MAY 2023 4 Pin Configuration and Functions Figure 4-1. DW or PW Package (Top View) Pin Functions PIN Name NO. I/O1 DESCRIPTION 1OE 1 I Bank 1, output enable, active low 1A1 2 I Bank 1, channel 1 input 2Y4 3 O Bank 2, channel 4 output 1A2 4 I Bank 1, channel 2 input 2Y3 5 O Bank 2, channel 3 output 1A3 6 I Bank 1, channel 3 input 2Y2 7 O Bank 2, channel 2 output 1A4 8 I Bank 1, channel 4 input 2Y1 9 O Bank 2, channel 1 output GND 10 — Ground 2A1 11 I Bank 2, channel 1 input 1Y4 12 O Bank 1, channel 4 output 2A2 13 I Bank 2, channel 2 input 1Y3 14 O Bank 1, channel 3 output 2A3 15 I Bank 2, channel 3 input 1Y2 16 O Bank 1, channel 2 output 2A4 17 I Bank 2, channel 4 input 1Y1 18 O Bank 1, channel 1 output 2OE 19 I Bank 2, output enable, active low VCC 20 — Positive supply Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated Product Folder Links: SN74AHCT244Q 3 SN74AHCT244Q www.ti.com SGDS024A – FEBRUARY 2002 – REVISED MAY 2023 5 Specifications 5.1 Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted) VCC 1 VI ( ) (1) MIN MAX Supply voltage range –0.5 7 UNIT V Input voltage range –0.5 7 V VO ( ) Output voltage range –0.5 VCC + 0.5 V IIK Input clamp current (VI < 0) –20 mA IOK Output clamp current (VO < 0 or VO > VCC) ±20 mA IO Continuous output current (VO = 0 to VCC) ±25 mA ±75 mA 150 °C 1 Continuous current through VCC or GND Tstg (1) (2) Storage temperature range –65 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 voltage ratings may be exceeded if the input and output current ratings are observed. 5.2 Recommended Operating Conditions (see Note 1) MIN MAX 4.5 5.5 UNIT VCC Supply voltage VIH High-level input voltage VIL Low-level input voltage VI Input voltage VO Output voltage IOH High-level output current –8 mA IOL Low-level output current 8 mA TA Operating free-air temperature 125 °C (1) 2 V V 0.8 V 0 5.5 V 0 VCC V –40 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. 5.3 Thermal Information SN74AHCT244Q THERMAL METRIC(1) RθJA (1) 4 Junction-to-ambient thermal resistance DW (SOIC) PW (TSSOP) 20 PINS 20 PINS 58 83 UNIT °C/W For more information about traditional and new thermal metrics, see Semiconductor and IC Package Thermal Metrics. Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated Product Folder Links: SN74AHCT244Q SN74AHCT244Q www.ti.com SGDS024A – FEBRUARY 2002 – REVISED MAY 2023 5.4 Electrical Characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER IOH = -50 μΑ VOH IOL = 50 μΑ II ICC MIN TYP 4.4 4.5 MAX UNIT 4.4 3.94 V 3.8 0.1 0.1 0.36 0.44 V 5.5 V ±0.25 ±2.5 μA VI = 5.5 V or GND 0 V to 5.5 V ±0.1 ±1 μA 5.5 V 4 40 μA 5.5 V 1.35 1.5 mA IO = 0 One input at 3.4 V, Other inputs at VCC or GND Ci VI = VCC or GND 5V 2.5 CO Vo = VCC or gnd 5V 3 (1) MIN MAX Vo = VCC or GND VI = VCC or GND, (1) TA = 25°C 4.5 V IOL = 8 mA IOZ VCC 4.5 V IOH = -8 mA VOL ΔICC TEST CONDITIONS 10 pF pF This is the increase in supply current for each input at one of the specified TTL voltage levels rather than 0 V or VCC. 5.5 Switching Characteristics over recommended operating free-air temperature range, VCC = 5 V ± 0.5 V (unless otherwise noted) (see Figure 6-1) PARAMETER tPLH tPHL tPZH tPZL tPHZ tPLZ tPLH tPHL tPZH tPZL tPHZ tPLZ FROM (INPUT) TO (OUTPUT) LOAD CAPACITANCE A Y CL = 15 pF OE Y CL = 15 pF OE Y CL = 15 pF A Y CL = 50 pF OE Y CL = 50 pF OE Y CL = 50 pF tsk(o) TA = 25°C MIN CL = 50 pF MIN MAX 7.4 1 8.5 5.4 7.4 1 8.5 7.7 10.4 1 12 7.7 10.4 1 12 5 9.4 1 10 5 9.4 1 10 5.9 8.4 1 9.5 5.9 8.4 1 9.5 8.2 11.4 1 13 8.2 11.4 1 13 8.8 11.4 1 13 8.8 11.4 1 13 TYP MAX 5.4 1 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated Product Folder Links: SN74AHCT244Q UNIT ns ns ns ns ns ns ns 5 SN74AHCT244Q www.ti.com SGDS024A – FEBRUARY 2002 – REVISED MAY 2023 5.6 Noise Characteristics VCC = 5 V, CL = 50 pF, TA = 25°C (see Note 1) PARAMETER MIN VOH(V) Quiet output, minimum dynamic VOH VIH(D) High-level dynamic input voltage VIL(D) Low-level dynamic input voltage (1) TYP MAX 4.1 UNIT V 2 V 0.8 V Characteristics are for surface-mount packages only. 5.7 Operating Characteristics VCC = 5 V, TA = 25°C PARAMETER Cpd 6 Power dissipation capacitance TEST CONDITIONS No load, f = 1 MHz Submit Document Feedback TYP UNIT 8.2 pF Copyright © 2023 Texas Instruments Incorporated Product Folder Links: SN74AHCT244Q SN74AHCT244Q www.ti.com SGDS024A – FEBRUARY 2002 – REVISED MAY 2023 6 Parameter Measurement Information A. B. C. D. CL includes probe and jig capacitance. 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. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO = 50 Ω, tr ≤ 3 ns, tf ≤ 3 ns. The outputs are measured one at a time with one input transition per measurement. Figure 6-1. Load Circuit and Voltage Waveforms TEST S1 tPLH/tPHL Open tPLZ/tPZL VCC tPHZ/tPZH GND Open Drain VCC Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated Product Folder Links: SN74AHCT244Q 7 SN74AHCT244Q www.ti.com SGDS024A – FEBRUARY 2002 – REVISED MAY 2023 7 Detailed Description 7.1 Overview The SN74AHCT244Q is organized as two 4-bit buffers/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. 7.2 Functional Block Diagram Figure 7-1. Logic Diagram (Positive Logic) This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. Figure 7-2. Logic Symbol 7.3 Device Functional Modes Table 7-1. Function Table (Each 4-Bit Buffer/driver) INPUTS 8 OE A L H OUTPUT Y H L L L H X Z Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated Product Folder Links: SN74AHCT244Q PACKAGE OPTION ADDENDUM www.ti.com 11-May-2023 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) Device Marking (3) Samples (4/5) (6) SN74AHCT244QDWR ACTIVE SOIC DW 20 2000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 125 AHCT244Q Samples SN74AHCT244QPWR ACTIVE TSSOP PW 20 2000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 125 HB244Q Samples SN74AHCT244QPWRG4 ACTIVE TSSOP PW 20 2000 RoHS & Green NIPDAU Level-1-260C-UNLIM HB244Q Samples (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