IDT74LVC163A 3.3V CMOS PRESETTABLE SYNCHRONOUS 4-BIT BINARY COUNTER INDUSTRIAL TEMPERATURE RANGE 3.3V CMOS PRESETTABLE SYNCHRONOUS 4-BIT BINARY COUNTER WITH SYNCHRONOUS RESET, 5 VOLT TOLERANT I/O FEATURES: Outputs (Q0 to Q3) may be preset to a high or low level. A low level at the parallel enable input (PE) disables the counting action and causes the data at the data inputs (D0 to D3) to be loaded into the counter on the positive-going edge of the clock (provided that the set-up and hold time requirements for PE are met). Preset takes place regardless of the levels at count enable inputs (CEP and CET). A low level at the master reset input (MR) sets all four outputs of the flip-flops (Q0 to Q3) to low level after the next positive-going transition on the clock (CP) input (provided that the set-up and hold time requirements for PE are met). This action occurs regardless of the levels of CP, PE, CET, and CEP inputs. This synchronous reset feature enables the designer to modify the maximum count with only one external NAND gate. The look-ahead carry simplifies serial cascading of the counters. Both count enable inputs (CEP and CET) must be high to count. The CET input is fed forward to enable the terminal count output (TC). The TC output thus enabled will produce a high output pulse of a duration approximately equal to a high level output of Q0. This pulse can be used to enable the next cascaded stage. The maximum clock frequency for the cascaded counters is determined by the CP to TC propagation delay and CEP to CP set-up time, according to the following formula: * 0.5 MICRON CMOS Technology * ESD > 2000V per MIL-STD-883, Method 3015; > 200V using machine model (C = 200pF, R = 0) * VCC = 3.3V 0.3V, Normal Range * VCC = 2.7V to 3.6V, Extended Range W typ. static) * CMOS power levels (0.4 * Rail-to-Rail output swing for increased noise margin * All inputs, outputs, and I/Os are 5V tolerant * Supports hot insertion * Available in TSSOP package DRIVE FEATURES: * High Output Drivers: 24mA * Reduced system switching noise APPLICATIONS: * 5V and 3.3V mixed voltage systems * Data communication and telecommunication systems DESCRIPTION: The LVC163A is a synchronous presettable binary counter, which features an internal look-ahead carry and can be used for high-speed counting. Synchronous operation is provided by having all the flip-flops clocked simultaniously on the positive-going edge of the clock (CP). fmax = FUNCTIONAL DIAGRAM 3 4 5 D0 PE 10 CET 7 CEP D1 D2 CP 1 MR tp(max) (CP to TC) + tsu (CEP to CP) 6 1 2 3 4 D3 PARALLEL LOAD CIRCUITRY TC 2 1 STATE DIAGRAM 0 9 IDT74LVC163A 15 5 14 6 13 7 15 BINARY COUNTER Q0 Q1 Q2 Q3 14 13 12 11 12 11 10 9 8 The IDT logo is a registered trademark of Integrated Device Technology, Inc. INDUSTRIAL TEMPERATURE RANGE JANUARY 2004 1 (c) 2004 Integrated Device Technology, Inc. DSC-4949/2 IDT74LVC163A 3.3V CMOS PRESETTABLE SYNCHRONOUS 4-BIT BINARY COUNTER INDUSTRIAL TEMPERATURE RANGE FUNCTIONAL BLOCK DIAGRAM D0 D1 D2 D3 CET CEP PE MR FF0 D CP FF1 D Q CP FF3 FF2 Q D CP D Q Q Q Q0 2 Q Q Q1 Q CP CP Q2 Q3 TC IDT74LVC163A 3.3V CMOS PRESETTABLE SYNCHRONOUS 4-BIT BINARY COUNTER INDUSTRIAL TEMPERATURE RANGE ABSOLUTE MAXIMUM RATINGS(1) TYPICAL TIMING SEQUENCE Symbol MR PE D0 D1 D2 D3 CP Description Max Unit VTERM Terminal Voltage with Respect to GND -0.5 to +6.5 V TSTG Storage Temperature -65 to +150 C IOUT DC Output Current -50 to +50 mA IIK IOK Continuous Clamp Current, VI < 0 or VO < 0 -50 mA ICC ISS Continuous Current through each VCC or GND 100 mA NOTE: 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. CEP CET Q0 CAPACITANCE (TA = +25C, F = 1.0MHz) Q1 Parameter(1) Symbol Q2 Q3 TC 12 13 15 14 RESET PRESET 1 0 Typ. Max. INHIBIT Input Capacitance VIN = 0V 4.5 6 pF COUT Output Capacitance VOUT = 0V 5.5 8 pF CI/O I/O Port Capacitance VIN = 0V 6.5 8 pF PIN DESCRIPTION Pin Names PIN CONFIGURATION MR Description Asynchronous Master Reset (Active LOW) CP Clock Input (LOW-to-HIGH, Edge-Triggered) Dx Data Inputs CEP Count Enable Inputs GND Ground (0V) MR 1 16 VCC CP 2 15 TC PE Parallel Enable Input (Active LOW) CET Count Enable Carry Input Qx Flip-Flop Outputs TC Terminal Count Output Vcc Positive Supply Voltage D0 3 14 Q0 D1 4 13 Q1 D2 5 12 Q2 D3 6 11 Q3 CEP 7 10 CET GND 8 9 PE TSSOP TOP VIEW 3 Unit CIN NOTE: 1. As applicable to the device type. 2 COUNT Conditions IDT74LVC163A 3.3V CMOS PRESETTABLE SYNCHRONOUS 4-BIT BINARY COUNTER INDUSTRIAL TEMPERATURE RANGE FUNCTION TABLE (1) OPERATING MODES Reset (clear) Parallel load INPUTS OUTPUTS Count Hold MR l h h h h CP X CEP X X X h l CET X X X h X PE X l l h h Dx X l h X X Qx L L H count Q(2) TC L L * * * (do nothing) h X X l h X Q(2) L NOTE: 1. H = h = L = l = X = * = HIGH Voltage Level HIGH Voltage level one setup time prior to the LOW-to-HIGH clock transition. LOW Voltage Level LOW Voltage level one setup time prior to the LOW-to-HIGH clock transition. Don't care The TC output is HIGH when CET is HIGH and the counter is at Terminal Count (HHHH). = LOW-to-HIGH clock transition 2. Indicates the state of the referenced output one set up time prior to the LOW-to-HIGH clock transition. DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE Following Conditions Apply Unless Otherwise Specified: Operating Condition: TA = -40C to +85C Symbol VIH(2) VIL Min. Typ.(1) Max. Unit VCC = 2.3V to 2.7V 1.7 -- -- V VCC = 2.7V to 3.6V 2 -- -- VCC = 2.3V to 2.7V -- -- 0.7 VCC = 2.7V to 3.6V -- -- 0.8 Parameter Input HIGH Voltage Level Input LOW Voltage Level Test Conditions V Input Leakage Current VCC = 3.6V VI = 0 to 5.5V -- -- 5 A IOZH High Impedance Output Current VCC = 3.6V VO = 0 to 5.5V -- -- 10 A IOZL (3-State Output pins) IOFF Input/Output Power Off Leakage VCC = 0V, VIN or VO 5.5V -- -- 50 A VIK Clamp Diode Voltage VCC = 2.3V, IIN = -18mA -- -0.7 -1.2 V VH ICCL ICCH ICCZ ICC Input Hysteresis Quiescent Power Supply Current VCC = 3.3V VCC = 3.6V, VIN = GND or VCC -- -- 100 -- -- 10 mV A Quiescent Power Supply Current Variation One input at VCC - 0.6V, other inputs at VCC or GND -- -- 500 A IIH IIL NOTES: 1. Typical values are at VCC = 3.3V, +25C ambient. 2. Clock Pin (CP) requires a minimum VIH of 2.5V. 4 IDT74LVC163A 3.3V CMOS PRESETTABLE SYNCHRONOUS 4-BIT BINARY COUNTER INDUSTRIAL TEMPERATURE RANGE OUTPUT DRIVE CHARACTERISTICS Symbol VOH VOL Test Conditions(1) Parameter Output HIGH Voltage Output LOW Voltage Min. Max. Unit V VCC = 2.3V to 3.6V IOH = - 0.1mA VCC - 0.2 -- VCC = 2.3V IOH = - 6mA 2 -- VCC = 2.3V IOH = - 12mA 1.7 -- VCC = 2.7V 2.2 -- VCC = 3V 2.4 -- VCC = 3V IOH = - 24mA 2.2 -- VCC = 2.3V to 3.6V IOL = 0.1mA -- 0.2 VCC = 2.3V IOL = 6mA -- 0.4 IOL = 12mA -- 0.7 VCC = 2.7V IOL = 12mA -- 0.4 VCC = 3V IOL = 24mA -- 0.55 V NOTE: 1. VIH and VIL must be within the min. or max. range shown in the DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE table for the appropriate VCC range. TA = - 40C to + 85C. OPERATING CHARACTERISTICS, VCC = 3.3V 0.3V, TA = 25C Symbol CPD Parameter Power Dissipation Capacitance Test Conditions Typical Unit CL = 0pF, f = 10Mhz -- pF SWITCHING CHARACTERISTICS(1) VCC = 2.7V Symbol Parameter VCC = 3.3V 0.3V Min. Max. Min. Max. Unit tPLH tPHL Propagation Delay CP to Qx -- 9 -- 8 ns tPLH tPHL Propagation Delay CP to TC -- 11 -- 9.5 ns tPLH tPHL tW tSU tSU tSU tH Propagation Delay CET to TC Clock Pulse Width, HIGH or LOW Set-Up Time, Dx to CP Set-Up Time, MR, PE to CP Set-Up Time, CEP, CET to CP Hold Time, Dx, PE, CEP, CET, MR to CP -- 8.8 -- 7.8 ns 5 3.5 3.5 5.5 0 -- -- -- -- -- 4 3 3 5 0 -- -- -- -- -- ns ns ns ns ns tSK(o) Output Skew(2) -- -- -- 500 ps NOTES: 1. See TEST CIRCUITS AND WAVEFORMS. TA = - 40C to + 85C. 2 Skew between any two outputs of the same package and switching in the same direction. 5 IDT74LVC163A 3.3V CMOS PRESETTABLE SYNCHRONOUS 4-BIT BINARY COUNTER TEST CIRCUITS AND WAVEFORMS VCC(1)= 2.5V0.2V VLOAD VIH VCC(2)= 3.3V0.3V & 2.7V Unit 2 x Vcc 6 V Vcc 2.7 V VT Vcc / 2 1.5 V VLZ 150 300 mV VHZ 150 300 mV CL 30 50 pF tPHL tPLH tPHL VIH VT 0V OPPOSITE PHASE INPUT TRANSITION LVC QUAD Link Propagation Delay VIN tPZL VOUT D.U.T. OUTPUT SWITCH NORMALLY CLOSED LOW tPZH OUTPUT SWITCH NORMALLY OPEN HIGH 500 RT CL LVC QUAD Link Test Circuit for All Outputs VIH VT 0V CONTROL INPUT GND 500 DISABLE ENABLE Open (1, 2) tPLH OUTPUT VLOAD VCC Pulse Generator VIH VT 0V VOH VT VOL SAME PHASE INPUT TRANSITION TEST CONDITIONS Symbol INDUSTRIAL TEMPERATURE RANGE DEFINITIONS: CL = Load capacitance: includes jig and probe capacitance. RT = Termination resistance: should be equal to ZOUT of the Pulse Generator. tPLZ VLOAD/2 VT VLOAD/2 VLZ VOL tPHZ VOH VHZ 0V VT 0V LVC QUAD Link NOTE: 1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH. NOTES: 1. Pulse Generator for All Pulses: Rate 10MHz; tF 2ns; tR 2ns. 2. Pulse Generator for All Pulses: Rate 10MHz; tF 2.5ns; tR 2.5ns. Enable and Disable Times SWITCH POSITION Test Switch Open Drain Disable Low Enable Low VLOAD Disable High Enable High GND All Other Tests Open INPUT OUTPUT 1 tPLH1 tSK (x) tPLH2 tH tREM SYNCHRONOUS CONTROL ASYNCHRONOUS CONTROL tSU tH LVC QUAD Link Set-up, Hold, and Release Times VOH VT VOL LOW-HIGH-LOW PULSE VOH VT VOL OUTPUT 2 tSU VIH VT 0V VIH VT 0V VIH VT 0V VIH VT 0V TIMING INPUT VIH VT 0V tPHL1 tSK (x) DATA INPUT VT tW HIGH-LOW-HIGH PULSE tPHL2 VT LVC QUAD Link tSK(x) = tPLH2 - tPLH1 or tPHL2 - tPHL1 Pulse Width LVC QUAD Link Output Skew - tSK(X) NOTES: 1. For tSK(o) OUTPUT1 and OUTPUT2 are any two outputs. 2. For tSK(b) OUTPUT1 and OUTPUT2 are in the same bank. 6 IDT74LVC163A 3.3V CMOS PRESETTABLE SYNCHRONOUS 4-BIT BINARY COUNTER INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION XX LVC XX XXXX IDT Device Type Package Temp. Range PG Thin Shrink Small Outline Package 163A 3.3V CMOS Presettable Synchronous 4-Bit Binary Counter with Synchronous Reset, 5 Volt Tolerant I/O, 24mA 74 -40C to +85C 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 7 for Tech Support: logichelp@idt.com (408) 654-6459