IDT74FCT373A/C FAST CMOS OCTAL TRANSPARENT LATCH COMMERCIAL TEMPERATURE RANGE FAST CMOS OCTAL TRANSPARENT LATCH FEATURES: IDT74FCT373A/C DESCRIPTION: • IDT74FCT373A up to 30% faster than FAST • Equivalent to FAST output drive over full temperature and voltage supply extremes • IOL = 48mA • CMOS power levels (1mW typ. static) • Octal transparent latch with 3-state output control • Available in SOIC package The IDT74FCT373 is an octal transparent latch built using an advanced dual metal CMOS technology. These octal latches have 3-state outputs and are intended for bus oriented applications. The flip-flops appear transparent to the data when Latch Enable (LE) is high. When LE is low, the data that meets the set-up time is latched. Data appears on the bus when the Output Enable (OE) is low. When OE is high, the bus output is in the high-impedance state. FUNCTIONAL BLOCK DIAGRAM D0 D2 D1 D D3 D D O D O G D7 D D O G G D6 D5 D O O G D4 D O O G O G G G LE OE O0 O1 O2 O3 The IDT logo is a registered trademark of Integrated Device Technology, Inc. COMMERCIAL TEMPERATURE RANGE O4 O5 O6 O7 MAY 2002 1 © 2002 Integrated Device Technology, Inc. DSC-5422/1 IDT74FCT373A/C FAST CMOS OCTAL TRANSPARENT LATCH COMMERCIAL TEMPERATURE RANGE PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS(1) OE 1 20 VCC O0 2 19 O7 D0 3 18 D7 D1 4 17 D6 O1 5 16 O6 O2 6 15 O5 D2 7 14 D5 D3 8 13 D4 O3 9 12 O4 10 11 LE GND Symbol Description VTERM(2) Max Unit VTERM(3) Terminal Voltage with Respect to GND –0.5 to +7 V Terminal Voltage with Respect to GND –0.5 to VCC V TA Operating Temperature TBIAS Temperature under BIAS 0 to +70 °C –55 to +125 TSTG Storage Temperature –55 to +125 °C °C PT Power Dissipation 0.5 W IOUT DC Output Current 120 mA 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. Input and Vcc terminals only. 3. Output and I/O terminals only. CAPACITANCE (TA = +25°C, F = 1.0MHz) Parameter(1) Symbol SOIC TOP VIEW Conditions Typ. Max. 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. PIN DESCRIPTION Pin Names Description Dx Data Inputs LE Latch Enable Input (Active HIGH) OE Output Enable Input (Active LOW) Ox 3-State Outputs Ox Complementary 3-State Outputs FUNCTION TABLE(1) Dx H L X Inputs LE H H X NOTE: 1. H = HIGH Voltage Level X = Don’t Care L = LOW Voltage Level Z = High Impedance 2 Unit OE L L H Outputs Ox H L Z IDT74FCT373A/C FAST CMOS OCTAL TRANSPARENT LATCH COMMERCIAL TEMPERATURE RANGE 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% Symbol Test Conditions(1) Parameter VIH Input HIGH Level Guaranteed Logic HIGH Level VIL Input LOW Level Guaranteed Logic LOW Level IIH Input HIGH Current VCC = Max. IIL Input LOW Current IOZH VCC = Max. IOZL Off State (High Impedance) Output Current VIK Clamp Diode Voltage VCC = Min., IIN = –18mA IOS VOH VOL Short Circuit Current Output HIGH Voltage Output LOW Voltage GND(3) Min. Typ.(2) Max. Unit 2 — — V V — — 0.8 VI = VCC — — 5 VI = 2.7V — — 5(4) VI = 0.5V — — –5(4) VI = GND — — –5 VO = VCC VO = 2.7V VO = 0.5V VO = GND — — — — — — — — — –0.7 10 10(4) –10(4) –10 –1.2 –60 VHC VHC 2.4 — — — –120 VCC VCC 4.3 GND GND 0.3 — — — — VLC VLC(4) 0.5 VCC = Max., VO = VCC = 3V, VIN = VLC or VHC, IOH = –32µA VCC = Min IOH = –300µA VIN = VIH or VIL IOH = –15mA VCC = 3V, VIN = VLC or VHC, IOL = 300µA VCC = Min IOL = 300µA VIN = VIH or VIL IOL = 48mA 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, +25°C ambient and maximum loading. 3. Not more than one output should be tested at one time. Duration of the test should not exceed one second. 4. This parameter is guaranteed but not ttested. 3 µA µA V mA V V IDT74FCT373A/C FAST CMOS OCTAL TRANSPARENT LATCH COMMERCIAL TEMPERATURE RANGE POWER SUPPLY CHARACTERISTICS VLC = 0.2V; VHC = VCC - 0.2V Min. Typ.(2) Max. Unit VCC = Max. VIN ≥ VHC; VIN ≤ VLC — 0.2 1.5 mA Quiescent Power Supply Current TTL Inputs HIGH VCC = Max. VIN = 3.4V(3) — 0.5 2 mA Dynamic Power Supply Current(4) VCC = Max. Outputs Open OE = GND VIN ≥ VHC VIN ≤ VLC — 0.15 0.25 mA/ MHz VCC = Max. Outputs Open fi = 10MHz VIN ≥ VHC VIN ≤ VLC (FCT) — 1.7 4 mA 50% Duty Cycle OE = GND VIN = 3.4V VIN = GND — 2 5 VCC = Max. Outputs Open fi = 2.5MHz VIN ≥ VHC VIN ≤ VLC (FCT) — 3.2 6.5(5) 50% Duty Cycle OE = GND VIN = 3.4V VIN = GND — 5.2 14.5(5) Symbol Parameter ICC Quiescent Power Supply Current ∆ICC ICCD Test Conditions(1) One Input Toggling 50% Duty Cycle IC Total Power Supply Current(6) LE = VCC One Bit Toggling LE = VCC Eight Bits 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, +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. Values for these conditions are examples of ∆ICC formula. These limits are guaranteed but not tested. 6. IC = IQUIESCENT + IINPUTS + IDYNAMIC IC = ICC + ∆ICC DHNT + ICCD (fCP/2 + fiNi) 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) fCP = Clock Frequency for register devices (zero for non-register devices) fi = Input Frequency Ni = Number of Inputs at fi All currents are in milliamps and all frequencies are in megahertz. 4 IDT74FCT373A/C FAST CMOS OCTAL TRANSPARENT LATCH COMMERCIAL TEMPERATURE RANGE SWITCHING CHARACTERISTICS OVER OPERATING RANGE Symbol tPLH tPHL tPLH tPHL tPZH tPZL tPHZ tPLZ tSU tH tW Parameter Propagation Delay Dx to Ox Propagation Delay LE to Ox Output Enable Time Condition(1) CL = 50pF RL = 500Ω FCT373A Min.(2) Max. 1.5 5.2 FCT373C Min.(2) Max. 1.5 4.2 Unit ns 2 8.5 2 5.5 ns 1.5 6.5 1.5 5.5 ns Output Disable Time 1.5 5.5 1.5 5 ns Set-up Time HIGH or LOW, Dx to LE Hold Time HIGH or LOW, Dx to LE LE Pulse Width HIGH 2 1.5 5 — — — 2 1.5 5 — — — ns ns ns NOTES: 1. See test circuit and waveforms. 2. Minimum limits are guaranteed but not tested on Propagation Delays. 5 IDT74FCT373A/C FAST CMOS OCTAL TRANSPARENT LATCH COMMERCIAL TEMPERATURE RANGE TEST CIRCUITS AND WAVEFORMS V CC SWITCH POSITION 7.0V 500Ω V OUT VIN Pulse Generator D.U.T . 50pF RT 500Ω CL 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. 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 tW 3V 1.5V 0V HIGH-LOW-HIGH PULSE 3V 1.5V 0V tH 1.5V 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 VOH 1.5V VOL DISABLE 3V 1.5V 0V CONTROL INPUT tPZL OUTPUT NORMALLY LOW 3V 1.5V 0V OUTPUT NORMALLY HIGH Octal link Propagation Delay SWITCH CLOSED tPZH SWITCH OPEN tPLZ 3.5V 3.5V 1.5V 0.3V VOL tPHZ 0.3V 1.5V 0V Enable and Disable Times VOH 0V Octal link NOTES: 1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH. 2. Pulse Generator for All Pulses: Rate ≤ 1.0MHz; ZO ≤ 50Ω; tF ≤ 2.5ns; tR ≤ 2.5ns. 6 IDT74FCT373A/C FAST CMOS OCTAL TRANSPARENT LATCH COMMERCIAL TEMPERATURE RANGE ORDERING INFORMATION IDT XX Temp. Range FCT XXXX Device Type X Package CORPORATE HEADQUARTERS 2975 Stender Way Santa Clara, CA 95054 SO Small Outline IC 373A 373C Octal Transparent Latch 74 0°C to +70°C for SALES: 800-345-7015 or 408-727-6116 fax: 408-492-8674 www.idt.com 7 for Tech Support: [email protected] (408) 654-6459