Revised November 1999 100315 Low Skew Quad Clock Driver General Description Features The 100315 contains four low skew differential drivers, designed for generation of multiple, minimum skew differential clocks from a single differential input. This device also has the capability to select a secondary single-ended clock source for use in lower frequency system level testing. The 100315 is a 300 Series redesign of the 100115 clock driver. ■ Low output-to-output skew (≤50 ps) ■ Differential inputs and outputs ■ Secondary clock available for system level testing ■ 2000V ESD protection ■ Voltage compensated operating range: −4.2V to −5.7V Ordering Code: Order Number Package Number 100315SC M16A Package Descriptions 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Logic Diagram Connection Diagram Pin Descriptions Truth Table CLKSEL CLKIN CLKIN TCLK CLKn CLKn CLKIN, CLKIN Pin Names Differential Clock Inputs Description L L H X L H CLK1–4, CLK1–4 Differential Clock Outputs L H L X H L TCLK Test Clock Input (Note 1) H X X L L H CLKSEL Clock Input Select (Note 1) H X X H H L Note 1: TCLK and CLKSEL are single-ended inputs, with internal 50 kΩ pull-down resistors. © 1999 Fairchild Semiconductor Corporation DS010960 L = LOW Voltage Level H = HIGH Voltage Level X = Don't Care www.fairchildsemi.com 100315 Low Skew Quad Clock Driver September 1991 100315 Absolute Maximum Ratings(Note 2) Recommended Operating Conditions −65°C to +150°C Storage Temperature +150°C Maximum Junction Temperature (TJ) Case Temperature under Bias (TC) VEE Pin Potential to Ground Pin −7.0V to +0.5V Note 2: The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum rating. The “Recommended Operating Conditions” table will define the conditions for actual device operation. −50 mA Output Current (DC Output HIGH) −5.7V to −4.2V Operating Range (Note 2) ≥2000V ESD (Note 3) −5.7V to −4.2V Supply Voltage (VEE) VCC to +0.5V Input Voltage (DC) 0°C to +85°C Case Temperature (TC) 0°C to +85°C Note 3: ESD testing conforms to MIL-STD-883, Method 3015. DC Electrical Characteristics (Note 4) VEE = −4.2V to −5.7V, VCC = VCCA = GND, TC = 0°C to +85°C Min Typ Max Units VOH Symbol Output HIGH Voltage Parameter −1025 −955 −870 mV Conditions VOL Output LOW Voltage −1830 −1705 −1620 VOHC Output HIGH Voltage −1035 VOLC Output LOW Voltage VIH Single-Ended Input HIGH Voltage −1165 −870 mV Guaranteed HIGH Signal for All Inputs VIL Single-Ended Input LOW Voltage −1830 −1475 mV Guaranteed LOW Signal for All Inputs IIL Input LOW Current µA VIN = VIL(Min) IIH Input HIGH Current mV −1610 0.50 CLKIN, CLKIN 150 µA TCLK 250 µA CLKSEL 250 µA VDIFF Input Voltage Differential 150 VCM Common Mode Voltage VCC − 2V ICBO Input Leakage Current −10 IEE Power Supply Current −67 V −35 mA Loading with or VIL(Min) 50Ω to −2.0V VIN = VIH(Min) Loading with or VIL(Max) 50Ω to −2.0V VIN = VIH(Max) mV VCC − 0.5V VIN = VIH(Max) Required for Full Output Swing µA VIN = VEE Note 4: The specified limits represent the “worst case” value for the parameter. Since these “worst case” values normally occur at the temperature extremes, additional noise immunity and guard banding can be achieved by decreasing the allowable system operating ranges. AC Electrical Characteristics VEE = −4.2V to −4.8, VCC = VCCA = GND Symbol TC = 0°C Parameter Min fMAX Maximum Clock Frequency tPLH Propagation Delay CLKIN, tPHL CLKIN to CLK(1–4), CLK(1–4) Min 750 Max 750 TC = +85°C Min Max 750 Figures 1, 3 1.20 ns Figures 1, 2 0.80 1.60 ns Figures 1, 2 0.30 0.80 ns Figures 1, 4 50 ps (Note 5) 0.79 0.62 0.82 0.67 0.87 Single-Ended 0.59 0.99 0.62 1.02 0.67 1.07 0.50 1.20 0.50 1.20 0.50 0.80 1.60 0.80 1.60 0.30 0.80 0.30 0.80 tPHL to CLK(1–4), CLK(1–4) tPLH Propagation Delay, CLKSEL tPHL to CLK(1–4), CLK(1–4) tTLH Transition Time tTHL 20% to 80%, 80% to 20% tOST Maximum Skew Opposite Edge Output-to-Output Variation 50 50 Conditions ns 0.59 Propagation Delay, TCLK Units MHz Differential tPLH DIFF TC = +25°C Max Data to Output Path Note 5: Output-to-Output Skew is defined as the absolute value of the difference between the actual propagation delay for any outputs within the same packaged device. The specifications apply to any outputs switching in the same direction either HIGH-to-LOW (tOSHL), or LOW-to-HIGH (tOSLH), or in opposite directions both HL and LH (tOST). Parameters tOST and tPS guaranteed by design. www.fairchildsemi.com 2 100315 Test Circuit Note: Shown for testing CLKIN to CLK1 in the differential mode. L1, L2, L3 and L4 = equal length 50Ω impedance lines. All unused inputs and outputs are loaded with 50Ω in parallel with ≤3 pF to GND. Scope should have 50Ω input terminator internally. FIGURE 1. AC Test Circuit Switching Waveforms FIGURE 2. Propagation Delay, TCLK, CLKSEL to Outputs FIGURE 3. Propagation Delay, CLKIN/CLKIN to Outputs FIGURE 4. Transition Times 3 www.fairchildsemi.com 100315 Low Skew Quad Clock Driver Physical Dimensions inches (millimeters) unless otherwise noted 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow Package Number M16A Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications. LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. www.fairchildsemi.com www.fairchildsemi.com 4