SN74BCT244DBRG4


   

 
  
SCBS006E − OCTOBER 1987 − REVISED APRIL 1994 • • • • SN54BCT244 . . . J OR W PACKAGE SN74BCT244 . . . DB OR DW OR N PACKAGE (TOP VIEW) State-of-the-Art BiCMOS Design Significantly Reduces ICCZ P-N-P Inputs Reduce DC Loading ESD Protection Exceeds 2000 V Per MIL-STD-883C, Method 3015 3-State Outputs Drive Bus Lines or Buffer Memory Address Registers Package Options Include Plastic Small-Outline (DW) and Shrink Small-Outline (DB) Packages, Ceramic Chip Carriers (FK) and Flatpacks (W), and Standard Plastic and Ceramic 300-mil DIPs (J, N) 1OE 1A1 2Y4 1A2 2Y3 1A3 2Y2 1A4 2Y1 GND description 1 20 2 19 3 18 4 17 5 16 6 15 7 14 8 13 9 12 10 11 VCC 2OE 1Y1 2A4 1Y2 2A3 1Y3 2A2 1Y4 2A1 SN54BCT244 . . . FK PACKAGE (TOP VIEW) 2Y4 1A1 1OE VCC These octal buffers and line drivers are designed specifically to improve both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. Taken together with the ′BCT240 and ′BCT241, these devices provide the choice of selected combinations of inverting and noninverting outputs, symmetrical OE (active-low output-enable) inputs, and complementary OE and OE inputs. 1A2 2Y3 1A3 2Y2 1A4 4 3 2 1 20 19 18 5 17 6 16 7 15 8 14 9 10 11 12 13 1Y1 2A4 1Y2 2A3 1Y3 2Y1 GND 2A1 1Y4 2A2 The ′BCT244 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. 2OE • The SN54BCT244 is characterized for operation over the full military temperature range of − 55°C to 125°C. The SN74BCT244 is characterized for operation from 0°C to 70°C. FUNCTION TABLE (each buffer) INPUTS OE A OUTPUT Y L H H L L L H X Z Copyright  1994, Texas Instruments Incorporated    !"#$ % &'!!($ #%  )'*+&#$ ,#$(!,'&$% &!" $ %)(&&#$% )(! $.( $(!"%  (/#% %$!'"($% %$#,#!, 0#!!#$1- !,'&$ )!&(%%2 ,(% $ (&(%%#!+1 &+',( $(%$2  #++ )#!#"($(!%- • DALLAS, TEXAS 75265 • HOUSTON, TEXAS 77251−1443 POST OFFICE BOX 655303 POST OFFICE BOX 1443 2−1 

   

 
  
SCBS006E − OCTOBER 1987 − REVISED APRIL 1994 logic symbol† 1OE 1A1 1A2 1A3 1A4 1 logic diagram (positive logic) 1OE EN 2 18 4 16 6 14 8 12 1A1 1Y1 2OE 2 18 4 16 6 14 8 12 1Y3 1A2 2A2 2A3 2A4 1Y2 1Y4 1Y3 EN 1A4 2A1 1Y1 1Y2 1A3 19 1 11 9 13 7 15 5 17 3 1Y4 2Y1 2Y2 2OE 2Y3 19 2Y4 11 9 13 7 15 5 17 3 2A1 † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. 2A2 2A3 2A4 2Y1 2Y2 2Y3 2Y4 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)‡ Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . − 0.5 V to 7 V Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . − 0.5 V to 7 V Voltage range applied to any output in the disabled or power-off state, VO . . . . . . . . . . . . . . . − 0.5 V to 5.5 V Voltage range applied to any output in the high state, VO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . − 0.5 V to VCC Current into any output in the low state: SN54BCT244 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 mA SN74BCT244 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 mA Operating free-air temperature range: SN54BCT244 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . − 55°C to 125°C SN74BCT244 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . − 65°C to 150°C ‡ 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. NOTE 1: The input and output voltage ratings may be exceeded if the input and output current ratings are observed. 2−2 • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443 • 

   

 
  
SCBS006E − OCTOBER 1987 − REVISED APRIL 1994 recommended operating conditions SN54BCT244 SN74BCT244 MIN NOM MAX MIN NOM MAX 4.5 5 5.5 4.5 5 5.5 UNIT VCC VIH Supply voltage VIL IIK Low-level input voltage 0.8 0.8 V Input clamp current −18 −18 mA IOH IOL High-level output current −12 −15 mA 64 mA TA Operating free-air temperature 70 °C High-level input voltage 2 2 Low-level output current V 48 −55 125 V 0 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER VIK VOH SN54BCT244 TYP† MAX TEST CONDITIONS VCC = 4.5 V, VCC = 4.5 V MIN II = −18 mA IOH = − 3 mA SN74BCT244 TYP† MAX MIN −1.2 IOH = − 12 mA IOH = − 15 mA 2.4 3.3 2 3.2 0.38 −1.2 2.4 3.3 2 3.1 UNIT V V VOL VCC = 4.5 V IOL = 48 mA IOL = 64 mA 0.55 II IIH VCC = 5.5 V, VCC = 5.5 V, VI = 7 V VI = 2.7 V 0.1 0.1 mA 20 20 µA IIL IOZH VCC = 5.5 V, VCC = 5.5 V, VI = 0.5 V VO = 2.7 V −1 −1 mA 50 50 µA IOZL IOS‡ VCC = 5.5 V, VCC = 5.5 V, VO = 0.5 V VO = 0 ICCH ICCL VCC = 5.5 V, VCC = 5.5 V, Outputs open 23 40 Outputs open 53 80 0.42 −225 −50 µA mA 23 40 mA 53 80 mA 4 10 mA −100 ICCZ VCC = 5.5 V, Outputs open 4 10 † All typical values are at VCC = 5 V. ‡ Not more than one output should be tested at a time, and the duration of the test should not exceed one second. • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443 • V −225 −50 −100 0.55 2−3 

   

 
  
SCBS006E − OCTOBER 1987 − REVISED APRIL 1994 switching characteristics (see Note 2) PARAMETER FROM (INPUT) VCC = 5 V, CL = 50 pF, R1 = 500 Ω, R2 = 500 Ω, TA = 25°C ′BCT244 TO (OUTPUT) tPLH tPHL A Y tPZH tPZL OE Y tPHZ tPLZ OE Y VCC = 4.5 V to 5.5 V, CL = 50 pF, R1 = 500 Ω, R2 = 500 Ω, TA = MIN to MAX† SN54BCT244 SN74BCT244 MIN TYP MAX MIN MAX MIN MAX 1.2 2.5 4.4 0.9 5.3 0.9 5 1.7 3.2 5 1.4 6 1.4 5.5 2 5.7 7.8 2 9 2 8.7 2 5.9 8.1 2 9.4 2 8.9 2 5.4 6.7 2 8 2 7.7 2 6.1 7.6 2 9.8 2 8.9 † For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. NOTE 2: Load circuits and voltage waveforms are shown in Section 1. 2−4 • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443 • UNIT ns ns ns PACKAGE OPTION ADDENDUM www.ti.com 14-Oct-2022 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) 5962-9062501M2A ACTIVE LCCC FK 20 1 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 59629062501M2A SNJ54BCT 244FK 5962-9062501MRA ACTIVE CDIP J 20 1 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 5962-9062501MR A SNJ54BCT244J 5962-9062501MSA ACTIVE CFP W 20 1 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 5962-9062501MS A SNJ54BCT244W SN74BCT244DW ACTIVE SOIC DW 20 25 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 BCT244 Samples SN74BCT244DWR ACTIVE SOIC DW 20 2000 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 BCT244 Samples SN74BCT244N ACTIVE PDIP N 20 20 RoHS & Non-Green NIPDAU N / A for Pkg Type 0 to 70 SN74BCT244N Samples SN74BCT244NSR ACTIVE SO NS 20 2000 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 BCT244 Samples SNJ54BCT244FK ACTIVE LCCC FK 20 1 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 59629062501M2A SNJ54BCT 244FK SNJ54BCT244J ACTIVE CDIP J 20 1 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 5962-9062501MR A SNJ54BCT244J SNJ54BCT244W ACTIVE CFP W 20 1 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 5962-9062501MS A SNJ54BCT244W (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. Addendum-Page 1 Samples Samples Samples Samples Samples Samples PACKAGE OPTION ADDENDUM www.ti.com 14-Oct-2022 (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