IN74ACT373 OCTAL 3-STATE NONINVERTING TRANSPARENT LATCH High-Speed Silicon-Gate CMOS • • • • The IN74ACT373 is identical in pinout to the LS/ALS373, HC/HCT373. The IN74ACT373 may be used as a level converter for interfacing TTL or NMOS outputs to High Speed CMOS inputs. These latches appear transparent to data (i.e., the outputs change asynchronously) when Latch Enable is high. When Latch Enable goes low, data meeting the setup and hold time becomes latched. • TTL/NMOS Compatible Input Levels Outputs Directly Interface to CMOS, NMOS, and TTL Operating Voltage Range: 4.5 to 5.5 V Low Input Current: 1.0 µA; 0.1 µA @ 25°C Outputs Source/Sink 24 mA ORDERING INFORMATION IN74ACT373N Plastic IN74ACT373DW SOIC TA = -40° to 85° C for all packages LOGIC DIAGRAM PIN ASSIGNMENT PIN 20=VCC PIN 10 = GND FUNCTION TABLE Output Enable L L L Inputs Latch Enable H H L H X X = Don’t Care Z = High Impedance 1 D H L X X Output Q H L No Change Z IN74ACT373 MAXIMUM RATINGS* Symbol Parameter Value Unit VCC DC Supply Voltage (Referenced to GND) -0.5 to +7.0 V VIN DC Input Voltage (Referenced to GND) -0.5 to VCC +0.5 V VOUT DC Output Voltage (Referenced to GND) -0.5 to VCC +0.5 V IIN DC Input Current, per Pin mA ±20 IOUT DC Output Sink/Source Current, per Pin mA ±50 ICC DC Supply Current, VCC and GND Pins mA ±50 PD Power Dissipation in Still Air, Plastic DIP+ 750 mW SOIC Package+ 500 Tstg Storage Temperature -65 to +150 °C 260 TL Lead Temperature, 1 mm from Case for 10 °C Seconds (Plastic DIP or SOIC Package) * Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the Recommended Operating Conditions. +Derating - Plastic DIP: - 10 mW/°C from 65° to 125°C SOIC Package: : - 7 mW/°C from 65° to 125°C RECOMMENDED OPERATING CONDITIONS Symbol Parameter VCC DC Supply Voltage (Referenced to GND) VIN, VOUT DC Input Voltage, Output Voltage (Referenced to GND) TJ Junction Temperature (PDIP) TA Operating Temperature, All Package Types IOH Output Current - High IOL Output Current - Low t r, tf Input Rise and Fall Time * VCC =4.5 V VCC =5.5 V (except Schmitt Inputs) * VIN from 0.8 V to 2.0 V Min 4.5 0 -40 0 0 Max 5.5 VCC Unit V V 140 +85 -24 24 10 8.0 °C °C mA mA ns/V This device contains protection circuitry to guard against damage due to high static voltages or electric fields. However, precautions must be taken to avoid applications of any voltage higher than maximum rated voltages to this high-impedance circuit. For proper operation, VIN and VOUT should be constrained to the range GND≤(VIN or VOUT)≤VCC. Unused inputs must always be tied to an appropriate logic voltage level (e.g., either GND or VCC). Unused outputs must be left open. 2 IN74ACT373 DC ELECTRICAL CHARACTERISTICS(Voltages Referenced to GND) Guaranteed VCC Limits Symbol Parameter Test Conditions V 25 °C -40°C to 85°C VOUT=0.1 V or VCC-0.1 V 4.5 VIH Minimum High2.0 2.0 Level Input 5.5 2.0 2.0 Voltage VOUT=0.1 V or VCC-0.1 V 4.5 VIL Maximum Low 0.8 0.8 Level Input 5.5 0.8 0.8 Voltage VOH Minimum High4.5 4.4 4.4 IOUT ≤ -50 µA Level Output 5.5 5.4 5.4 Voltage * VIN= VIL or VIH 3.76 3.86 4.5 IOH=-24 mA 4.76 4.86 5.5 IOH=-24 mA VOL Maximum Low4.5 0.1 0.1 IOUT ≤ 50 µA Level Output 5.5 0.1 0.1 Voltage * VIN= VIL or VIH 0.44 0.36 4.5 IOL=24 mA 0.44 0.36 5.5 IOL=24 mA IIN Maximum Input VIN=VCC or GND 5.5 ±0.1 ±1.0 Leakage Current 5.5 IOZ Maximum Three- VIN(OE)=VIL or VIH ±0.5 ±5.0 State Leakage VIN=VCC or GND Current VOUT=VCC or GND 5.5 1.5 Additional Max VIN=VCC - 2.1 V ∆ICCT ICC/Input VOLD=1.65 V Max IOLD +Minimum 5.5 75 Dynamic Output Current VOHD=3.85 V Min IOHD +Minimum 5.5 -75 Dynamic Output Current VIN=VCC or GND ICC Maximum 5.5 8.0 80 Quiescent Supply Current (per Package) * All outputs loaded; thresholds on input associated with output under test. +Maximum test duration 2.0 ms, one output loaded at a time. 3 Unit V V V V µA µA mA mA mA µA IN74ACT373 AC ELECTRICAL CHARACTERISTICS(VCC=5.0 V ± 10%, CL=50pF,Input tr=tf=3.0 ns) Guaranteed Limits Symbol Parameter 25 °C -40°C to 85°C Min Max Min Max tPLH Propagation Delay, Input D to Q (Figure 1) 2.5 10 1.5 11.5 tPHL Propagation Delay, Input D to Q (Figure 1) 2.0 10 1.5 11.5 tPLH Propagation Delay, Latch Enable to Q 2.5 11 2.0 11.5 (Figure 2) tPHL Propagation Delay, Latch Enable to Q 2.0 10 1.5 11.5 (Figure 2) tPZH Propagation Delay, Output Enable to Q 2.0 9.5 1.5 10.5 (Figure 3) tPZL Propagation Delay, Output Enable to Q 2.0 9.0 1.5 10.5 (Figure 3) tPHZ Propagation Delay, Output Enable to Q 2.5 11 2.5 12.5 (Figure 3) tPLZ Propagation Delay, Output Enable to Q 1.5 8.5 1.0 10 (Figure 3) CIN Maximum Input Capacitance 4.5 4.5 CPD Typical @25°C,VCC=5.0 V 40 Power Dissipation Capacitance TIMING REQUIREMENTS(VCC=5.0 V ± 10%, CL=50pF, Input tr=tf=3.0 ns) Guaranteed Limits Symbol Parameter 25 °C -40°C to 85°C tsu Minimum Setup Time, Input D to Latch 7.0 8.0 Enable (Figure 4) th Minimum Hold Time, Latch Enable to 0 1.0 Input D (Figure 4) tw Minimum Pulse Width, Latch Enable 2.0 8.0 (Figure 2) 4 Unit ns ns ns ns ns ns ns ns pF pF Unit ns ns ns IN74ACT373 Figure 1. Switching Waveforms Figure 2. Switching Waveforms Figure 3. Switching Waveforms Figure 4. Switching Waveforms EXPANDED LOGIC DIAGRAM 5