Revised February 1999 MM74HC259 8-Bit Addressable Latch/3-to-8 Line Decoder General Description The MM74HC259 device utilizes advanced silicon-gate CMOS technology to implement an 8-bit addressable latch, designed for general purpose storage applications in digital systems. The MM74HC259 has a single data input (D), 8 latch outputs (Q1–Q8), 3 address inputs (A, B, and C), a common enable input (G), and a common CLEAR input. To operate this device as an addressable latch, data is held on the D input, and the address of the latch into which the data is to be entered is held on the A, B, and C inputs. When ENABLE is taken LOW the data flows through to the addressed output. The data is stored when ENABLE transitions from LOW-to-HIGH. All unaddressed latches will remain unaffected. With enable in the HIGH state the device is deselected, and all latches remain in their previous state, unaffected by changes on the data or address inputs. To eliminate the possibility of entering erroneous data into the latches, the enable should be held HIGH (inactive) while the address lines are changing. If enable is held HIGH and CLEAR is taken LOW all eight latches are cleared to a LOW state. If enable is LOW all latches except the addressed latch will be cleared. The addressed latch will instead follow the D input, effectively implementing a 3-to-8 line decoder. All inputs are protected from damage due to static discharge by diodes to VCC and ground. Features ■ Typical propagation delay: 18 ns ■ Wide supply range: 2–6V ■ Low input current: 1 µA maximum ■ Low quiescent current: 80 µA maximum (74HC Series) Ordering Code: Order Number Package Number Package Description MM74HC259M M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150” Narrow MM74HC259SJ M16D 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide MM74HC259MTC MM74HC259N MTC16 N16E 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide 16-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 Latch Selection Table Pin Assignments for DIP, SOIC, SOP and TSSOP Latch B A Addressed L L L 0 L L H 1 L H L 2 L H H 3 H L L 4 H L H 5 H H L 6 H H H 7 H = HIGH level, L = LOW level D = the level at the data input Qi0 the level of Qi (i = 0, 1 .. .7, as appropriate) before the indicated steady-state input conditions were established. Top View © 1999 Fairchild Semiconductor Corporation Select Inputs C DS005006.prf www.fairchildsemi.com MM74HC259 8-Bit Addressable Latch/3-to-8 Line Decoder September 1983 MM74HC259 Truth Table Inputs Clear G Outputs of Each Addressed Other Latch Output Addressable Latch H L D Qi0 H H Qi0 Qi0 Memory L L D L 8-Line Decoder L H L L Clear Logic Diagram www.fairchildsemi.com Function 2 Recommended Operating Conditions −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) ±25 mA DC VCC or GND Current, per pin (ICC) ±50 mA Storage Temperature Range (TSTG) Min Max Supply Voltage (VCC) 2 6 V DC Input or Output Voltage 0 VCC V −40 +85 °C (VIN, VOUT) Operating Temperature Range (TA) Input Rise or Fall Times −65°C to +150°C (tr, tf) VCC = 2.0V 1000 ns VCC = 4.5V 500 ns VCC = 6.0V 400 ns Power Dissipation (PD) (Note 3) 600 mW S.O. Package only 500 mW Note 1: Absolute Maximum Ratings are those values beyond which damage to the device may occur. Lead Temperature (TL) (Soldering 10 seconds) Symbol VIH VIL VOH Parameter Note 2: Unless otherwise specified all voltages are referenced to ground. 260°C DC Electrical Characteristics Conditions Units Note 3: Power Dissipation temperature derating — plastic “N” package: − 12 mW/°C from 65°C to 85°C (Note 4) TA= 25°C VCC 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 6.0V 4.2 4.2 4.2 V 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| ≤ 4.0 mA 4.5V 4.2 3.98 3.84 3.7 V |IOUT| ≤ 5.2 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 V VIN = VIH or VIL IIN |IOUT| ≤ 4.0 mA 4.5V 0.2 0.26 0.33 0.4 |IOUT| ≤ 5.2 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 Quiescent VIN = VCC or GND 6.0V 8.0 80 160 µA Supply Current IOUT = 0 µA Maximum Input Current ICC 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. 3 www.fairchildsemi.com MM74HC259 Absolute Maximum Ratings(Note 1) (Note 2) MM74HC259 AC Electrical Characteristics (VCC = 5.0V, TA = 25°C, tr = tf = 6 ns, CL = 15 pF unless otherwise specified.) Symbol tPHL, tPLH Parameter Conditions Typ Maximum Propagation Delay Guaranteed Limit Units 18 32 ns 20 38 ns 20 35 ns 17 27 ns ns Data to Output tPHL, tPLH Maximum Propagation Delay Select to Output tPHL, tPLH Maximum Propagation Delay Enable to Output tPHL Maximum Propagation Delay Clear to Output tW Minimum Enable Pulse Width 10 16 tW Minimum Clear Pulse Width 10 16 ns tr, tf Maximum Input Rise and Fall Time 500 ns ts Minimum Setup Time Select or 15 20 ns −2 0 ns Data to Enable tH Minimum Hold Time Data or Address to Enable AC Electrical Characteristics tr = tf = 6 ns, CL = 50 pF, VCC = 2.0V – 6.0V Symbol Parameter Conditions tPHL, tPLH Maximum Propagation Delay Data to Output tPHL, tPLH Maximum Propagation Delay Select to Output TA = 25°C VCC Typ TA = −40 to 85°C TA = −55 to 125°C Guaranteed Limits Units 2.0V 60 180 225 250 ns 4.5V 19 37 46 52 ns 6.0V 17 32 40 45 ns 2.0V 72 220 275 310 ns 4.5V 21 43 54 60 ns ns 6.0V 18 37 46 52 tPHL, tPLH Maximum Propagation Delay 2.0V 65 200 250 280 ns Enable to Output 4.5V 27 40 50 58 ns tPHL tW ts 6.0V 23 35 44 50 ns Maximum Propagation Delay 2.0V 50 150 190 210 ns Clear to Output 4.5V 18 31 39 44 ns 6.0V 16 26 32 37 ns Minimum Pulse Width 2.0V 80 100 120 ns Clear or Enable 4.5V 16 20 24 ns ns 6.0V 14 18 20 Minimum Setup Time Address 2.0V 100 125 150 ns or Data to Enable 4.5V 20 25 28 ns 15 19 25 ns Minimum Hold Time Address 2.0V −10 0 0 0 ns or Data to Enable 4.5V −2 0 0 0 ns 6.0V −2 0 0 0 ns 2.0V 30 75 95 110 ns 4.5V 8 15 19 22 ns 6.0V 7 13 16 19 ns 5 10 10 10 pF 6.0V tH tTLH, tTHL Maximum Output Rise and Fall Time CIN Input Capacitance CPD Power Dissipation (per package) 80 Capacitance (Note 5) Note 5: CPD determines the no load dynamic power consumption, PD = CPD VCC2 f + ICC VCC, and the no load dynamic current consumption, IS = CPDs V CCsf + ICC. www.fairchildsemi.com 4 pF MM74HC259 Physical Dimensions inches (millimeters) unless otherwise noted 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow Package Number M16A 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Package Number M16D 5 www.fairchildsemi.com MM74HC259 Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Package Number MTC16 www.fairchildsemi.com 6 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide Package Number N16E 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. MM74HC259 8-Bit Addressable Latch/3-to-8 Line Decoder Physical Dimensions inches (millimeters) unless otherwise noted (Continued)