SN74HCT138NE4

 
    

SCLS171E − MARCH 1984 − REVISED SEPTEMBER 2003 D D D D D D Low Input Current of 1 µA Max D Inputs Are TTL-Voltage Compatible D Designed Specifically for High-Speed Operating Voltage Range of 4.5 V to 5.5 V Outputs Can Drive Up To 10 LSTTL Loads Low Power Consumption, 80-µA Max ICC Typical tpd = 17 ns ±4-mA Output Drive at 5 V D Memory Decoders and Data Transmission Systems Incorporate Three Enable Inputs to Simplify Cascading and/or Data Reception SN54HCT138 . . . J OR W PACKAGE SN74HCT138 . . . D, N, NS, OR PW PACKAGE (TOP VIEW) 1 16 2 15 3 14 4 13 5 12 6 11 7 10 8 9 B A NC VCC Y0 VCC Y0 Y1 Y2 Y3 Y4 Y5 Y6 C G2A NC G2B G1 4 3 2 1 20 19 18 5 17 6 16 7 15 8 14 9 10 11 12 13 Y1 Y2 NC Y3 Y4 Y7 GND NC Y6 Y5 A B C G2A G2B G1 Y7 GND SN54HCT138 . . . FK PACKAGE (TOP VIEW) NC − No internal connection description/ordering information The ’HCT138 devices are designed for high-performance memory-decoding or data-routing applications requiring very short propagation delay times. In high-performance memory systems, these decoders can minimize the effects of system decoding. When employed with high-speed memories utilizing a fast enable circuit, the delay times of these decoders and the enable time of the memory usually are less than the typical access time of the memory. This means that the effective system delay introduced by the decoders is negligible. ORDERING INFORMATION PDIP − N SN74HCT138N Tube of 40 SN74HCT138D Reel of 2500 SN74HCT138DR Reel of 250 SN74HCT138DT Reel of 2000 SN74HCT138NSR Tube of 90 SN74HCT138PW Reel of 2000 SN74HCT138PWR Reel of 250 SN74HCT138PWT CDIP − J Tube of 25 SNJ54HCT138J SNJ54HCT138J CFP − W Tube of 150 SNJ54HCT138W SNJ54HCT138W SOP − NS TSSOP − PW −55°C −55 C to 125 125°C C TOP-SIDE MARKING Tube of 25 SOIC − D −40°C to 85°C ORDERABLE PART NUMBER PACKAGE† TA SN74HCT138N HCT138 HCT138 HT138 LCCC − FK Tube of 55 SNJ54HCT138FK SNJ54HCT138FK † 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. Copyright  2003, Texas Instruments Incorporated   !" # $%&" !#  '%()$!" *!"&+ *%$"# $ " #'&$$!"# '& ",& "&#  &-!# #"%&"# #"!*!* .!!"/+ *%$" '$&##0 *&# " &$&##!)/ $)%*& "&#"0  !)) '!!&"&#+  '*%$"# $')!" "  1   !)) '!!&"&# !& "&#"&* %)&## ",&.#& "&*+  !)) ",& '*%$"# '*%$" '$&##0 *&# " &$&##!)/ $)%*& "&#"0  !)) '!!&"&#+ POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1 
 
    

SCLS171E − MARCH 1984 − REVISED SEPTEMBER 2003 description/ordering information (continued) The conditions at the binary-select inputs and the three enable inputs select one of eight output lines. Two active-low (G) and one active-high (G) enable inputs reduce the need for external gates or inverters when expanding. A 24-line decoder can be implemented without external inverters, and a 32-line decoder requires only one inverter. An enable input can be used as a data input for demultiplexing applications. FUNCTION TABLE INPUTS ENABLE 2 OUTPUTS SELECT G1 G2A G2B C B A Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 X H X X X X H H H H H H H H X X H X X X H H H H H H H H L X X X X X H H H H H H H H H L L L L L L H H H H H H H H L L L L H H L H H H H H H H L L L H L H H L H H H H H H L L L H H H H H L H H H H H L L H L L H H H H L H H H H L L H L H H H H H H L H H H L L H H L H H H H H H L H H L L H H H H H H H H H H L POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 
 
    

SCLS171E − MARCH 1984 − REVISED SEPTEMBER 2003 logic diagram (positive logic) 15 A B C 1 14 Y1 2 13 3 12 11 10 G1 Y0 6 Y2 Y3 Y4 Y5 9 Y6 G2A 4 7 G2B Y7 5 Pin numbers shown are for the D, J, N, NS, PW, and W packages. absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V Input clamp current, IIK (VI < 0 or VI > VCC) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA Output clamp current, IOK (VO < 0 or VO > VCC) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA Continuous output current, IO (VO = 0 to VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±25 mA Continuous current through VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA Package thermal impedance, θJA (see Note 2): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73°C/W N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67°C/W NS package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64°C/W PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108°C/W Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −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. NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed. 2. The package thermal impedance is calculated in accordance with JESD 51-7. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3 
 
    

SCLS171E − MARCH 1984 − REVISED SEPTEMBER 2003 recommended operating conditions (see Note 3) SN54HCT138 MIN NOM MAX MIN NOM MAX 4.5 5 5.5 4.5 5 5.5 VCC VIH Supply voltage VIL VI Low-level input voltage Input voltage 0 VO ∆t/∆v Output voltage 0 High-level input voltage VCC = 4.5 V to 5.5 V VCC = 4.5 V to 5.5 V SN74HCT138 2 2 Input transition rise/fall time V V 0.8 VCC VCC UNIT 0 0 500 0.8 V VCC VCC V 500 ns V TA Operating free-air temperature −55 125 −40 85 °C NOTE 3: 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. electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS VCC VOH VI = VIH or VIL IOH = −20 µA IOH = −4 mA 4.5 V VOL VI = VIH or VIL IOL = 20 µA IOL = 4 mA 4.5 V II ICC VI = VCC or 0 VI = VCC or 0, ∆ICC† MIN MIN MAX SN74HCT138 MIN 4.4 4.499 4.4 4.4 4.3 3.7 3.84 5.5 V 4.5 V to 5.5 V MAX UNIT V 0.001 0.1 0.1 0.1 0.17 0.26 0.4 0.33 ±0.1 ±100 ±1000 ±1000 nA 8 160 80 µA 1.4 2.4 3 2.9 mA 3 10 10 10 pF 5.5 V Ci SN54HCT138 3.98 5.5 V IO = 0 One input at 0.5 V or 2.4 V, Other inputs at 0 or VCC TA = 25°C TYP MAX V † This is the increase in supply current for each input that is at one of the specified TTL voltage levels, rather than 0 V or VCC. switching characteristics over recommended operating free-air temperature range, CL = 50 pF (unless otherwise noted) (see Figure 1) PARAMETER FROM (INPUT) TO (OUTPUT) A, B, or C Any Y Enable Any Y tpd tt Y VCC MIN TA = 25°C TYP MAX SN54HCT138 MIN MAX SN74HCT138 MIN MAX 4.5 V 23 36 54 45 5.5 V 17 32 49 34 4.5 V 22 33 50 42 5.5 V 18 30 45 38 4.5 V 12 15 22 19 5.5 V 11 14 20 17 UNIT ns ns operating characteristics, TA = 25°C PARAMETER Cpd 4 TEST CONDITIONS Power dissipation capacitance No load POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 TYP 85 UNIT pF 
 
    

SCLS171E − MARCH 1984 − REVISED SEPTEMBER 2003 PARAMETER MEASUREMENT INFORMATION From Output Under Test 3V Test Point Input 1.3 V 1.3 V 0V CL = 50 pF (see Note A) tPLH In-Phase Output LOAD CIRCUIT 1.3 V 10% tPHL 90% 90% tr Input 1.3 V 0.3 V 2.7 V 2.7 V tr tPHL 3V 1.3 V 0.3 V 0 V Out-of-Phase Output 90% tf VOH 1.3 V 10% V OL tf tPLH 1.3 V 10% tf 1.3 V 10% 90% VOH VOL tr VOLTAGE WAVEFORMS PROPAGATION DELAY AND OUTPUT RISE AND FALL TIMES VOLTAGE WAVEFORM INPUT RISE AND FALL TIMES NOTES: A. CL includes probe and test-fixture capacitance. B. Phase relationships between waveforms were chosen arbitrarily. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO = 50 Ω, tr = 6 ns, tf = 6 ns. C. The outputs are measured one at a time with one input transition per measurement. D. tPLH and tPHL are the same as tpd. Figure 1. Load Circuit and Voltage Waveforms POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5 PACKAGE OPTION ADDENDUM www.ti.com 8-Dec-2021 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) (4/5) (6) 85504012A ACTIVE LCCC FK 20 1 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 85504012A SNJ54HCT 138FK 8550401EA ACTIVE CDIP J 16 1 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 8550401EA SNJ54HCT138J 8550401FA ACTIVE CFP W 16 1 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 8550401FA SNJ54HCT138W JM38510/65852BEA ACTIVE CDIP J 16 1 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 JM38510/ 65852BEA M38510/65852BEA ACTIVE CDIP J 16 1 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 JM38510/ 65852BEA SN54HCT138J ACTIVE CDIP J 16 1 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 SN54HCT138J SN74HCT138D ACTIVE SOIC D 16 40 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 HCT138 SN74HCT138DE4 ACTIVE SOIC D 16 40 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 HCT138 SN74HCT138DG4 ACTIVE SOIC D 16 40 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 HCT138 SN74HCT138DR ACTIVE SOIC D 16 2500 RoHS & Green NIPDAU | SN Level-1-260C-UNLIM -40 to 85 HCT138 SN74HCT138DRE4 ACTIVE SOIC D 16 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 HCT138 SN74HCT138DRG4 ACTIVE SOIC D 16 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 HCT138 SN74HCT138DT ACTIVE SOIC D 16 250 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 HCT138 SN74HCT138N ACTIVE PDIP N 16 25 RoHS & Green NIPDAU N / A for Pkg Type -40 to 85 SN74HCT138N SN74HCT138NE4 ACTIVE PDIP N 16 25 RoHS & Green NIPDAU N / A for Pkg Type -40 to 85 SN74HCT138N SN74HCT138NSR ACTIVE SO NS 16 2000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 HCT138 SN74HCT138PW ACTIVE TSSOP PW 16 90 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 HT138 SN74HCT138PWR ACTIVE TSSOP PW 16 2000 RoHS & Green NIPDAU | SN Level-1-260C-UNLIM -40 to 85 HT138 Addendum-Page 1 Samples PACKAGE OPTION ADDENDUM www.ti.com Orderable Device 8-Dec-2021 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) (4/5) (6) SN74HCT138PWRG4 ACTIVE TSSOP PW 16 2000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 HT138 SNJ54HCT138FK ACTIVE LCCC FK 20 1 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 85504012A SNJ54HCT 138FK SNJ54HCT138J ACTIVE CDIP J 16 1 Non-RoHS & Non-Green SNPB N / A for Pkg Type -55 to 125 8550401EA SNJ54HCT138J (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