IDT74FCT138 IDT | Alldatasheet

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Integrated Device Technology, Inc. MILITARY AND COMMERCIAL TEMPERATURE RANGES MAY 1992  1992 Integrated Device Technology, Inc. 7.3 DSC-4625/3 The IDT logo is a registered trademark of Integrated Device Technology, Inc. FAST is a trademark of National Semiconductor Co. FEATURES:

  • IDT54/74FCT138 equivalent to FAST speed
  • IDT54/74FCT138A 35% faster than FAST
  • IDT54/74FCT138C 40% faster than FAST
  • Equivalent to FAST speeds output drive over full tem- perature and voltage supply extremes
  • IOL = 48mA (commercial) and 32mA (military)
  • CMOS power levels (1mW typ. static)
  • TTL input and output level compatible
  • CMOS output level compatible
  • Substantially lower input current levels than FAST (5µA max.)
  • JEDEC standard pinout for DIP and LCC
  • Product available in Radiation Tolerant and Radiation Enhanced versions
  • Military product compliant to MIL-STD-883, Class B
  • Standard Military Drawing # 5962-87654 is listed on this function. Refer to section 2. DESCRIPTION: The IDT54/74FCT138/A/C are 1-of-8 decoders built using an advanced dual metal CMOS technology. The IDT54/ 74FCT138/A/C accept three binary weighted inputs (A 0, A1, A2) and, when enabled, provide eight mutually exclusive active LOW outputs (O0 - O7). The IDT54/74FCT138/A/C feature three enable inputs, two active LOW (E1, E2) and one active HIGH (E3). All outputs will be HIGH unless E1 and E2 are LOW and E3 is HIGH. This multiple enable function allows easy parallel expansion of the device to a 1-of-32 (5 lines to 32 lines) decoder with just four IDT54/74FCT138/A/C devices and one inverter.FUNCTIONAL BLOCK DIAGRAM PIN CONFIGURATIONS DIP/SOIC/CERPACK TOP VIEW L20-2 INDEX 2581 drw 01 E 3 NCNC Vcc NC GND NC A 2 E 1 E 2 O 0 O 1 O 2 O 3 O 4 O 7 O 5 O 6 9 10 11 12 13 20 19 LCC TOP VIEW IDT54/74FCT138 IDT54/74FCT138A IDT54/74FCT138C FAST CMOS 1-OF-8 DECODER WITH ENABLE 2581 drw 02 O 0O 1O 2O 3O 4O 5O 6O 7 E 1 E 2 E3A 0A 1A 2 A 0 A 1 Vcc P16-1, D16-1, SO16-1 E16-1 A 2 E 1 E 2 GND O 0 O 1 O 2 O 3 O 4 O O 6 O 7 5 E 3

7.3 2 IDT54/74FCT138/A/C FAST CMOS 1-OF-8 DECODER-WITH ENABLE MILITARY AND COMMERCIAL TEMPERATURE RANGES PIN DESCRIPTION Pin Names Description A0–A2 Address Inputs E1, E2 Enable Inputs (Active LOW) E3 Enable Input (Active HIGH) O0–O7 Outputs (Active LOW) 2581 tbl 05 FUNCTION TABLE Inputs Outputs EE1 EE2 E3 A 0 A 1 A 2 OO0 OO1 O 2 OO3 OO4 OO5 OO6 OO7 H X XX XX HHH HHHHH X H XX XX HHH HHHHH X X LX XX HHH HHHHH L L HLL LLHH HHHHH L L HH L L HLH HHHHH L L HL HL HHL HHHHH L L HH HL HHH LHHHH L L HL LH HHH HLHHH L L HH LH HHH HHLHH L L HL HH HHH HHHLH L L HH HH HHH HHHHL 2581 tbl 06 ABSOLUTE MAXIMUM RATINGS (1) Symbol Rating Commercial Military Unit VTERM (2) Terminal Voltage –0.5 to +7.0 –0.5 to +7.0 V with Respect to GND V TERM (3) Terminal Voltage –0.5 to VCC –0.5 to VCC V with Respect to GND T A Operating 0 to +70 –55 to +125 °C Temperature TBIAS Temperature –55 to +125 –65 to +135 °C Under Bias TSTG Storage –55 to +125 –65 to +150 °C Temperature PT Power Dissipation 0.5 0.5 W IOUT DC Output Current 120 120 mA NOTES: 2581 tbl 01 1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. No terminal voltage may exceed V CC by +0.5V unless otherwise noted. 2. Inputs and VCC terminals only. 3. Outputs and I/O terminals only. CAPACITANCE (TA = +25°C, f = 1.0MHz) Symbol Parameter (1) Conditions Typ. Max. Unit C IN Input Capacitance VIN = 0V 6 10 pF C OUT Output Capacitance VOUT = 0V 8 12 pF NOTE: 2581 tbl 02 1. This parameter is guaranteed characterization data and not tested.

FAST CMOS 1-OF-8 DECODER-WITH ENABLE MILITARY AND COMMERCIAL TEMPERATURE RANGES 7.3 3 POWER SUPPLY CHARACTERISTICS VLC = 0.2V; VHC = VCC – 0.2V Symbol Parameter Test Conditions (1) Min. Typ. (2) Max. Unit ICC Quiescent Power Supply Current Vcc = Max. — 0.2 1.5 mA VIN ≥ VHC ; VIN ≤ VLC ΔICC Quiescent Power Supply Current Vcc = Max. — 0.5 2.0 mA TTL Inputs HIGH V IN = 3.4V(3) ICCD Dynamic Power Supply Current(4) Vcc = Max. V IN ≥ VHC — 0.15 0.3 mA/MHz Outputs Open V IN ≤ VLC One Output Toggling 50% Duty Cycle IC Total Power Supply Current(5) Vcc = Max. V IN ≥ VHC — 1.7 4.5 mA Outputs Open V IN ≤ VLC Toggle E1, E2 or E3 (FCT) 50% Duty Cycle V IN = 3.4V — 2.0 5.5 fO = 10MHz V IN = GND One Output Toggling NOTES: 2581 tbl 04 1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are at VCC = 5.0V, +25°C ambient. 3. Per TTL driven input (VIN = 3.4V); all other inputs at VCC or GND. 4. This parameter is not directly testable, but is derived for use in Total Power Supply calculations. 5. IC = IQUIESCENT + IINPUTS + IDYNAMIC IC = ICC + ΔICC DH N T + ICCD (fCP /2 + fO N O ) ICC = Quiescent Current ΔICC = Power Supply Current for a TTL High Input (VIN = 3.4V) D H = Duty Cycle for TTL Inputs High N T = Number of TTL Inputs at DH ICCD = Dynamic Current Caused by an Output Transition Pair (HLH or LHL) fCP = Clock Frequency for Register Devices (Zero for Non-Register Devices) fO = Output Frequency N O = Number of Outputs at fO All currents are in milliamps and all frequencies are in megahertz. DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE Following Conditions Apply Unless Otherwise Specified: VLC = 0.2V; VHC = VCC – 0.2V Commercial: TA = 0°C to +70°C, VCC = 5.0V ± 5%; Military: TA = –55°C to +125°C, VCC = 5.0V ± 10% Symbol Parameter Test Conditions (1) Min. Typ. (2) Max. Unit VIH Input HIGH Level Guaranteed Logic HIGH Level 2.0 — — V VIL Input LOW Level Guaranteed Logic LOW Level — — 0.8 V IIH Input HIGH Current V CC = Max. V I = VCC ——5 µA VI= 2.7V — — 5 (4) IIL Input LOW Current V I= 0.5V — — –5 (4) VI = GND — — –5 VIK Clamp Diode Voltage V CC = Min., IN = –18mA — –0.7 –1.2 V IOS Short Circuit Current V CC = Max.(3), VO = GND –60 –120 — mA VOH Output HIGH Voltage V CC = 3V, VIN = VLC or VHC , IOH = –32µAV HC VCC —V VCC = Min. I OH = –300µAV HC VCC — VIN = VIH or VIL IOH = –12mA MIL. 2.4 4.3 — IOH = –15mA COM’L. 2.4 4.3 — VOL Output LOW Voltage V CC = 3V, VIN = VLC or VHC , IOL = 300µA — GND V LC V VCC = Min. I OL = 300µA — GND V LC (4) VIN = VIH or VIL IOL = 32mA MIL. — 0.3 0.5 IOL = 48mA COM’L. — 0.3 0.5 NOTES: 2581 tbl 03 1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are at VCC = 5.0V, +25°C ambient and maximum loading. 3. Not more than one output should be shorted at one time. Duration of the short circuit test should not exceed one second. 4. This parameter is guaranteed but not tested.

7.3 4 IDT54/74FCT138/A/C FAST CMOS 1-OF-8 DECODER-WITH ENABLE MILITARY AND COMMERCIAL TEMPERATURE RANGES tPHL An to On R L = 500Ω tPHL E1 or E2 to On tPHL E3 to On NOTES: 2581 tbl 07 1. See test circuit and waveforms. 2. Minimum limits are guaranteed but not tested on Propagation Delays. SWITCHING CHARACTERISTICS OVER OPERATING RANGE IDT54/74FCT138 IDT54/74FCT138A IDT54/74FCT138C

FAST CMOS 1-OF-8 DECODER-WITH ENABLE MILITARY AND COMMERCIAL TEMPERATURE RANGES 7.3 5 TEST CIRCUITS AND WAVEFORMS TEST CIRCUITS FOR ALL OUTPUTS ENABLE AND DISABLE TIMESPROPAGATION DELAY SET-UP, HOLD AND RELEASE TIMES PULSE WIDTH Pulse Generator DATA INPUT TIMING INPUT ASYNCHRONOUS CONTROL PRESET CLEAR ETC. SYNCHRONOUS CONTROL PRESET CLEAR CLOCK ENABLE ETC. 1.5V 1.5V 1.5V 1.5V tSU tH tREM H tSU R T D.U.T. VCC VIN C L V OUT 50pF 500Ω 500Ω 7.0V SAME PHASE INPUT TRANSITION 1.5V 1.5V VOH VOL tPLH tPHL OUTPUT OPPOSITE PHASE INPUT TRANSITION CONTROL INPUT 1.5V 3.5V OUTPUT NORMALLY LOW OUTPUT NORMALLY HIGH SWITCH CLOSED SWITCH OPEN V OL V OH 1.5V tPLH tPHL 0.3V 0.3V tPLZtPZL tPZH tPHZ 3.5V 1.5V 1.5V ENABLE DISABLE HIGH-LOW-HIGH PULSE LOW-HIGH-LOW PULSE tW 1.5V 1.5V t NOTES 2581 drw 04 1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH. 2. Pulse Generator for All Pulses: Rate ≤ 1.0 MHz; ZO ≤ 50Ω ; tF ≤ 2.5ns; tR ≤ 2.5ns. SWITCH POSITION Test Switch Open Drain Disable Low Closed Enable Low All Other Test Open DEFINITIONS: 2581 tbl 08 C L = Load capacitance: includes jig and probe capacitance. R T = Termination resistance: should be equal to ZOUT of the Pulse Generator.

7.3 6 IDT54/74FCT138/A/C FAST CMOS 1-OF-8 DECODER-WITH ENABLE MILITARY AND COMMERCIAL TEMPERATURE RANGES

ORDERING INFORMATION

P D SO E L Temperature Range X Device Type X Package X Process Blank B Commercial MIL-STD-883, Class B XXIDT FCT 138 138A 138C 1-of-8 Decoder Fast 1-of-8 Decoder Super Fast 1-of-8 Decoder –55°C to +125°C 0°C to +70°C 2581 drw 03