IDT54/74FCT138T/AT/CT FAST CMOS 1-OF-8 DECODER WITH ENABLE MILITARY AND INDUSTRIAL TEMPERATURE RANGES FAST CMOS 1-OF-8 DECODER WITH ENABLE DESCRIPTION: FEATURES: * * * * * * * * * IDT54/74FCT138T/AT/CT The IDT54/74FCT138T is a 1-of-8 decoder built using an advanced dual metal CMOS technology. The IDT54/74FCT138T accepts three binary weighted inputs (A0, A1, A2) and, when enabled, provides eight mutually exclusive active low outputs (O0 - O7). The IDT54/74FCT138T features 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 IDT54/74FCT138T devices and one inverter. Std., A, and C grades Low input and output leakage 1A (max.) CMOS power levels True TTL input and output compatibility: - VOH = 3.3V (typ.) - VOL = 0.3V (typ.) High Drive outputs (-15mA IOH, 48mA IOL) Meets or exceeds JEDEC standard 18 specifications Military product compliant to MIL-STD-883, Class B and DESC listed (dual marked) Power off disable outputs permit "live insertion" Available in the following packages: - Industrial: SOIC, QSOP - Military: CERDIP, LCC FUNCTIONAL BLOCK DIAGRAM A1 A2 O7 E1 A0 O6 O5 E2 O3 O4 The IDT logo is a registered trademark of Integrated Device Technology, Inc. MILITARY AND INDUSTRIAL TEMPERATURE RANGES E3 O2 O1 O0 JUNE 2002 1 (c) 2002 Integrated Device Technology, Inc. DSC-2570/9 IDT54/74FCT138T/AT/CT FAST CMOS 1-OF-8 DECODER WITH ENABLE MILITARY AND INDUSTRIAL TEMPERATURE RANGES 2 15 O0 A2 3 14 O1 A2 4 E1 4 13 O2 E1 E2 5 12 O3 E3 6 11 O4 O7 7 10 O5 8 9 O6 2 1 6 16 NC E2 7 15 O3 E3 8 14 O4 10 11 12 13 O5 NC O6 O2 NC 17 GND 5 LCC TOP VIEW PIN DESCRIPTION ABSOLUTE MAXIMUM RATINGS(1) Symbol 19 O1 9 CERDIP/ SOIC/ QSOP TOP VIEW 20 18 O7 GND 3 O0 VCC VCC 16 NC 1 A0 INDEX A0 A1 A1 PIN CONFIGURATION Max Unit Pin Names VTERM(2) Terminal Voltage with Respect to GND Description -0.5 to +7 V A0 - A 2 Address Inputs VTERM(3) Terminal Voltage with Respect to GND Description -0.5 to VCC+0.5 V E1, E2 Enable Inputs (Active LOW) TSTG Storage Temperature -65 to +150 C E3 Enable Input (Active HIGH) IOUT DC Output Current -60 to +120 mA O0 - O7 NOTES: 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 Vcc by =0.5V unless otherwise noted. 2. Inputs and Vcc terminals only. 3. Output and I/O terminals only. CAPACITANCE (TA = +25C, F = 1.0MHz) Symbol Parameter(1) Conditions Typ. Max. Unit CIN Input Capacitance VIN = 0V 6 10 pF COUT Output Capacitance VOUT = 0V 8 12 pF NOTE: 1. This parameter is measured at characterization but not tested. 2 Outputs (Active LOW) IDT54/74FCT138T/AT/CT FAST CMOS 1-OF-8 DECODER WITH ENABLE MILITARY AND INDUSTRIAL TEMPERATURE RANGES FUNCTION TABLE(1) Inputs E1 H X X L L L L L L L L E2 X H X L L L L L L L L E3 X X L H H H H H H H H A0 X X X L H L H L H L H A1 X X X L L H H L L H H A2 X X X L L L L H H H H O0 H H H L H H H H H H H O1 H H H H L H H H H H H O2 H H H H H L H H H H H O3 H H H H H H L H H H H Outputs O4 H H H H H H H L H H H O5 H H H H H H H H L H H O6 H H H H H H H H H L H O7 H H H H H H H H H H L NOTE: 1. H = HIGH Voltage Level X = Don't Care L = LOW Voltage Level DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE Following Conditions Apply Unless Otherwise Specified: Industrial: TA = -40C to +85C, VCC = 5.0V 10%; Military: TA = -55C to +125C, VCC = 5.0V 10% Symbol Test Conditions(1) Parameter Min. Typ.(2) Max. Unit 2 -- -- V VIH Input HIGH Level Guaranteed Logic HIGH Level VIL Input LOW Level Guaranteed Logic LOW Level -- -- 0.8 V IIH Input HIGH Current(4) VCC = Max. VI = 2.7V -- -- 1 A IIL Input LOW Current(4) VCC = Max. VI = 0.5V -- -- 1 II Input HIGH Current(4) VCC = Max., VI = VCC (Max.) -- -- 1 A VIK Clamp Diode Voltage VCC = Min., IIN = -18mA -- -0.7 -1.2 V -60 2.4 -120 3.3 -225 -- mA 2 3 -- -- 0.3 0.5 V -- 200 -- mV -- 0.01 1 A IOS VOH Short Circuit Current Output HIGH Voltage VOL Output LOW Voltage VH Input Hysteresis ICC Quiescent Power Supply Current VCC = Max., VO = VCC = Min VIN = VIH or VIL GND(3) IOH = -6mA MIL IOH = -8mA IND IOH = -12mA MIL IOH = -15mA IND IOL = -32mA MIL IOL = -48mA IND VCC = Min VIN = VIH or VIL -- VCC = Max. VIN = GND or VCC V NOTES: 1. For conditions shown as Min. or Max., use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are at VCC = 5.0V, +25C ambient. 3. Not more than one output should be tested at one time. Duration of the test should not exceed one second. 4. The test limit for this parameter is 5A at TA = -55C. 3 IDT54/74FCT138T/AT/CT FAST CMOS 1-OF-8 DECODER WITH ENABLE MILITARY AND INDUSTRIAL TEMPERATURE RANGES POWER SUPPLY CHARACTERISTICS Test Conditions(1) Min. Typ.(2) Max. Unit -- 0.5 2 mA VIN = VCC VIN = GND -- 0.15 0.3 mA/ MHz VCC = Max. Outputs Open Toggle E1, E2, or E3 VIN = VCC VIN = GND -- 1.5 4 mA 50% Duty Cycle fo = 10MHz One Input and VIN = 3.4V VIN = GND -- 1.8 5 Symbol Parameter ICC Quiescent Power Supply Current TTL Inputs HIGH VCC = Max. VIN = 3.4V(3) ICCD Dynamic Power Supply Current(4) VCC = Max. Outputs Open One Input Toggling 50% Duty Cycle Total Power Supply Current(5) IC One Output Toggling NOTES: 1. For conditions shown as Min. or Max., use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are at VCC = 5.0V, +25C 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 + ICC DHNT + ICCD (fONO) ICC = Quiescent Current ICC = Power Supply Current for a TTL High Input (VIN = 3.4V) DH = Duty Cycle for TTL Inputs High NT = Number of TTL Inputs at DH ICCD = Dynamic Current caused by an Input Transition Pair (HLH or LHL) fO = Output Frequency NO = Number of Outputs at fO All currents are in milliamps and all frequencies are in megahertz. SWITCHING CHARACTERISTICS OVER OPERATING RANGE Symbol tPLH tPHL tPLH tPHL tPLH tPHL Parameter Propagation Delay Ax to Ox Propagation Delay E1 or E2 to Ox Propagation Delay E3 to Ox Condition CL = 50pF RL = 500 (1) 54FCT138T Mil. (2) Min. Max. 1.5 12 54/74FCT138AT Ind. Mil. (2) (2) Min. Max. Min. Max. 1.5 5.8 1.5 7.8 54/74FCT138CT Ind. Min. 1.5 (2) Mil. Max. 5.1 Min. 1.5 (2) Max. 6 Unit ns 1.5 12.5 1.5 5.9 1.5 8 1.5 5.2 1.5 6.1 ns 1.5 12.5 1.5 5.9 1.5 8 1.5 5.2 1.5 6.1 ns NOTES: 1. See test circuit and waveforms. 2. Minimum limits are guaranteed but not tested on Propagation Delays. 4 IDT54/74FCT138T/AT/CT FAST CMOS 1-OF-8 DECODER WITH ENABLE MILITARY AND INDUSTRIAL TEMPERATURE RANGES TEST CIRCUITS AND WAVEFORMS V CC SWITCH POSITION 7.0V 500 V OUT VIN Pulse Generator D.U.T . 50pF RT Test Switch Open Drain Disable Low Enable Low Closed All Other Tests Open DEFINITIONS: CL = Load capacitance: includes jig and probe capacitance. RT = Termination resistance: should be equal to ZOUT of the Pulse Generator. 500 CL Octal link Test Circuits for All Outputs DATA INPUT tH tSU TIMING INPUT ASYNCHRONOUS CONTROL PRESET CLEAR ETC. SYNCHRONOUS CONTROL PRESET CLEAR CLOCK ENABLE ETC. 3V 1.5V 0V 3V 1.5V 0V tREM tSU LOW-HIGH-LOW PULSE 1.5V tW 3V 1.5V 0V HIGH-LOW-HIGH PULSE 3V 1.5V 0V tH 1.5V Octal link Pulse Width Octal link Set-Up, Hold, and Release Times ENABLE SAME PHASE INPUT TRANSITION tPLH tPHL OUTPUT tPLH OPPOSITE PHASE INPUT TRANSITION tPHL 3V 1.5V 0V DISABLE 3V 1.5V CONTROL INPUT OUTPUT NORMALLY LOW 3V 1.5V 0V OUTPUT NORMALLY HIGH Octal link SWITCH CLOSED tPZH SWITCH OPEN 0V tPLZ tPZL VOH 1.5V VOL 3.5V 3.5V 1.5V 0.3V VOL tPHZ 0.3V 1.5V 0V VOH 0V Octal link Propagation Delay Enable and Disable Times NOTES: 1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH. 2. Pulse Generator for All Pulses: Rate 1.0MHz; tF 2.5ns; tR 2.5ns. 5 IDT54/74FCT138T/AT/CT FAST CMOS 1-OF-8 DECODER WITH ENABLE MILITARY AND INDUSTRIAL TEMPERATURE RANGES ORDERING INFORMATION FCT IDT XX XXXX Temp. Range Device Type XX Package X Process Blank B Industrial MIL-STD-883, Class B SO Q Industrial Options Small Outline IC Quarter-size Small Outline Package D L Military Options CERDIP Leadless Chip Carrier 138T 138AT 138CT 1-of-8 Decoder 54 74 - 55C to +125C - 40C to +85C DATA SHEET DOCUMENT HISTORY 3/25/2002 Removed standard speed grade 6/20/2002 Updated as per PNC Logic-00-07 and Logic-01-04 CORPORATE HEADQUARTERS 2975 Stender Way Santa Clara, CA 95054 for SALES: 800-345-7015 or 408-727-6116 fax: 408-492-8674 www.idt.com 6 for Tech Support: logichelp@idt.com (408) 654-6459