Revised February 1999 MM74HC373 3-STATE Octal D-Type Latch General Description The MM74HC373 high speed octal D-type latches utilize advanced silicon-gate CMOS technology. They possess the high noise immunity and low power consumption of standard CMOS integrated circuits, as well as the ability to drive 15 LS-TTL loads. Due to the large output drive capability and the 3-STATE feature, these devices are ideally suited for interfacing with bus lines in a bus organized system. When the LATCH ENABLE input is HIGH, the Q outputs will follow the D inputs. When the LATCH ENABLE goes LOW, data at the D inputs will be retained at the outputs until LATCH ENABLE returns HIGH again. When a high logic level is applied to the OUTPUT CONTROL input, all outputs go to a high impedance state, regardless of what signals are present at the other inputs and the state of the storage elements. The 74HC logic family is speed, function, and pin-out compatible with the standard 74LS logic family. All inputs are protected from damage due to static discharge by internal diode clamps to VCC and ground. Features ■ Typical propagation delay: 18 ns ■ Wide operating voltage range: 2 to 6 volts ■ Low input current: 1 µA maximum ■ Low quiescent current: 80 µA maximum (74 Series) ■ Output drive capability: 15 LS-TTL loads Ordering Code: Order Number Package Number MM74HC373WM M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300” Wide M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide MM74HC373SJ MM74HC373MTC MM74HC373N MTC20 N20A Package Description 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Connection Diagram Truth Table Pin Assignments for DIP, SOIC, SOP and TSSOP Output Latch Control Enable Data 373 Output L H H L H L H L L L X Q0 H X X Z H = HIGH Level L = LOW Level Q0 = Level of output before steady-state input conditions were established. Z = High Impedance Top View © 1999 Fairchild Semiconductor Corporation DS005335.prf www.fairchildsemi.com MM74HC373 3-STATE Octal D-Type Latch September 1983 MM74HC373 Absolute Maximum Ratings(Note 1) Recommended Operating Conditions (Note 2) −0.5 to +7.0V Supply Voltage (VCC) DC Input Voltage (VIN) −1.5 to VCC +1.5V DC Output Voltage (VOUT) −0.5 to VCC +0.5V Clamp Diode Current (IIK, IOK) ±20 mA DC Output Current, per pin (IOUT) ±35 mA (VIN,VOUT ) Operating Temperature Range (TA) 600 mW 500 mW V 0 VCC V −40 +85 °C 1000 ns VCC = 4.5V 500 ns VCC = 6.0V 400 ns Note 1: Absolute Maximum Ratings are those values beyond which damage to the device may occur. Lead Temperature (TL) (Soldering 10 seconds) Units 6 (tr, tf) VCC = 2.0V Power Dissipation (PD) S.O. Package only Max 2 Input Rise or Fall Times −65°C to +150°C (Note 3) Min DC Input or Output Voltage ±70 mA DC VCC or GND Current, per pin (ICC) Storage Temperature Range (TSTG) Supply Voltage (VCC) Note 2: Unless otherwise specified all voltages are referenced to ground. 260°C Note 3: Power Dissipation temperature derating — plastic “N” package: − 12 mW/°C from 65°C to 85°C. DC Electrical Characteristics Symbol VIH VIL VOH Parameter Conditions VCC TA = 25°C Typ TA = −40 to 85°C TA = −55 to 125°C Guaranteed Limits Units Minimum HIGH Level 2.0V 1.5 1.5 1.5 V Input Voltage 4.5V 3.15 3.15 3.15 V V 6.0V 4.2 4.2 4.2 Maximum LOW Level 2.0V 0.5 0.5 0.5 V Input Voltage 4.5V 1.35 1.35 1.35 V 6.0V 1.8 1.8 1.8 V Minimum HIGH Level VIN = VIH or VIL Output Voltage |IOUT| ≤ 20 µA 2.0V 2.0 1.9 1.9 1.9 V 4.5V 4.5 4.4 4.4 4.4 V 6.0V 6.0 5.9 5.9 5.9 V |IOUT| ≤ 6.0 mA 4.5V 4.2 3.98 3.84 3.7 V |IOUT| ≤ 7.8 mA 6.0V 5.7 5.48 5.34 5.2 V VIN = VIH or VIL VOL Maximum LOW Level VIN = VIH or VIL Output Voltage |IOUT| ≤ 20 µA 2.0V 0 0.1 0.1 0.1 V 4.5V 0 0.1 0.1 0.1 V 6.0V 0 0.1 0.1 0.1 V |IOUT| ≤ 6.0 mA 4.5V 0.2 0.26 0.33 0.4 V |IOUT| ≤ 7.8 mA 6.0V 0.2 0.26 0.33 0.4 V VIN = VCC or GND 6.0V ±0.1 ±1.0 ±1.0 µA Maximum 3-STATE VIN = VIH or VIL, OC = VIH 6.0V ±0.5 ±5 ±10 µA Output Leakage VOUT = VCC or GND 6.0V 8.0 80 160 µA VIN = VIH or VIL IIN Maximum Input Current IOZ Current ICC Maximum Quiescent VIN = VCC or GND Supply Current IOUT = 0 µA Note 4: For a power supply of 5V ±10% the worst case output voltages (VOH, and VOL) occur for HC at 4.5V. Thus the 4.5V values should be used when designing with this supply. Worst case VIH and VIL occur at VCC = 5.5V and 4.5V respectively. (The VIH value at 5.5V is 3.85V.) The worst case leakage current (IIN, ICC, and IOZ) occur for CMOS at the higher voltage and so the 6.0V values should be used. www.fairchildsemi.com 2 MM74HC373 AC Electrical Characteristics VCC = 5V, TA = 25°C, tr = tf = 6 ns Symbol Parameter Conditions Guaranteed Typ Limit Units tPHL, tPLH Maximum Propagation Delay, Data to Q CL = 45 pF 18 25 tPHL, tPLH Maximum Propagation Delay, LE to Q CL = 45 pF 21 30 ns tPZH, tPZL Maximum Output Enable Time RL = 1 kΩ 20 28 ns tPHZ, tPLZ Maximum Output Disable Time 18 25 ns ns CL = 45 pF RL = 1 kΩ CL = 5 pF tS Minimum Set Up Time 5 ns tH Minimum Hold Time 10 ns tW Minimum Pulse Width 16 ns 9 AC Electrical Characteristics VCC = 2.0−6.0V, CL = 50 pF, tr = tf = 6 ns (unless otherwise specified) Symbol Parameter tPHL, tPLH Maximum Propagation Delay, Data to Q tPHL, tPLH Maximum Propagation Delay, LE to Q tPZH, tPZL Maximum Output Enable Time Conditions VCC TA = 25°C Typ TA = −40 to 85°C TA = −55 to 125°C Guaranteed Limits Units CL = 50 pF 2.0V 50 150 188 225 CL = 150 pF 2.0V 80 200 250 300 ns CL = 50 pF 4.5V 22 30 37 45 ns ns CL = 150 pF 4.5V 30 40 50 60 ns CL = 50 pF 6.0V 19 26 31 39 ns CL = 150 pF 6.0V 26 35 44 53 ns CL = 50 pF 2.0V 63 175 220 263 ns CL = 150 pF 2.0V 110 225 280 338 ns CL = 50 pF 4.5V 25 35 44 52 ns CL = 150 pF 4.5V 35 45 56 68 ns CL = 50 pF 6.0V 21 30 37 45 ns CL = 150 pF 6.0V 28 39 49 59 ns CL = 50 pF 2.0V 50 150 188 225 ns CL = 150 pF 2.0V 80 200 250 300 ns CL = 50 pF 4.5V 21 30 37 45 ns RL = 1 kΩ CL = 150 pF 4.5V 30 40 50 60 ns CL = 50 pF 6.0V 19 26 31 39 ns CL = 150 pF 6.0V 26 35 44 53 ns tPHZ, tPLZ Maximum Output Disable RL = 1 kΩ 2.0V 50 150 188 225 ns Disable Time CL = 50 pF tS tH tW Minimum Set Up Time Minimum Hold Time Minimum Pulse Width tTHL, tTLH Maximum Output Rise CL = 50 pF and Fall Time CPD CIN 4.5V 21 30 37 45 ns 6.0V 19 26 31 39 ns 2.0V 50 60 75 ns 4.5V 9 13 15 ns 6.0V 9 11 13 ns 2.0V 5 5 5 ns 4.5V 5 5 5 ns 6.0V 5 5 5 ns 80 100 120 ns 2.0V 30 4.5V 10 16 20 24 ns 6.0V 9 14 18 20 ns 2.0V 25 60 75 90 ns 4.5V 7 12 15 18 ns 6.0V 6 10 13 15 ns Power Dissipation (per latch) Capacitance (Note 5) OC = VCC 30 OC = GND 50 Maximum Input Capacitance 5 3 pF pF 10 10 10 pF www.fairchildsemi.com MM74HC373 AC Electrical Characteristics Symbol COUT Parameter (Continued) Conditions VCC Maximum Output TA = 25°C Typ 15 TA = −40 to 85°C TA = −55 to 125°C 20 20 20 Capacitance Note 5: CPD determines the no load dynamic power consumption, PD = CPD VCC2 f + ICC VCC, and the no load dynamic current consumption, IS = CPD VCC f + ICC. www.fairchildsemi.com 4 Units Guaranteed Limits pF MM74HC373 Physical Dimensions inches (millimeters) unless otherwise noted 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300” Wide Package Number M20B 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Package Number M20D 5 www.fairchildsemi.com MM74HC373 Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Package Number MTC20 www.fairchildsemi.com 6 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide Package Number N20A 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 1. Life support devices or systems are devices or systems device or system whose failure to perform can be reawhich, (a) are intended for surgical implant into the sonably expected to cause the failure of the life support body, or (b) support or sustain life, and (c) whose failure device or system, or to affect its safety or effectiveness. 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 www.fairchildsemi.com user. 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. MM74HC373 3-STATE Octal D-Type Latch Physical Dimensions inches (millimeters) unless otherwise noted (Continued)