M74HC77 4 BIT D TYPE LATCH ■ ■ ■ ■ ■ ■ ■ HIGH SPEED : tPD = 11 ns (TYP.) at VCC = 6V LOW POWER DISSIPATION: ICC =2µA(MAX.) at TA=25°C HIGH NOISE IMMUNITY: VNIH = V NIL = 28 % VCC (MIN.) SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 4mA (MIN) BALANCED PROPAGATION DELAYS: tPLH ≅ tPHL WIDE OPERATING VOLTAGE RANGE: VCC (OPR) = 2V to 6V PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 77 DESCRIPTION The M74HC77 is an high speed CMOS 4 BIT D TYPE LATCH fabricated with silicon gate C2MOS technology. It contains two groups of 2 bit latches controlled by an enable input (G1•2 or G3•4). These two latch groups can be used in different circuits. The data applied to the data inputs (1D, 2D, or 3D, 4D) are transferred to the Q outputs (1Q, 2Q, or 3Q, 4Q) respectively when the enable input (G1•2 or G3•4) DIP SOP TSSOP ORDER CODES PACKAGE TUBE DIP SOP TSSOP M74HC77B1R M74HC77M1R T&R M74HC77RM13TR M74HC77TTR is taken high. The Q outputs will follow the data inputs as long as the enable input is kept high. When the enable input is taken low, the information data applied to the data input is retained at the Q outputs. All inputs are equipped with protection circuits against static discharge and transient excess voltage. PIN CONNECTION AND IEC LOGIC SYMBOLS August 2001 1/10 M74HC77 IINPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION PIN No SYMBOL 1, 2, 5, 6 1D to 4D 3 G3 • 4 7, 10 8, 9, 13, 14 NC 1Q to 4Q 12 G1 • 2 11 GND VCC 4 NAME AND FUNCTION Data Inputs Latch Enable Input, Latches 3 and 4 No Internal Connection Latch Outputs Latch Enable Input, Latches 1 and 2 Ground (0V) Positive Supply Voltage TRUTH TABLE INPUTS OUTPUTS FUNCTION D G Q L H X H H L L H Qn X : Don’t Care LOGIC DIAGRAM 2/10 LATCH M74HC77 ABSOLUTE MAXIMUM RATINGS Symbol VCC Parameter Value Supply Voltage Unit -0.5 to +7 V -0.5 to VCC + 0.5 -0.5 to VCC + 0.5 V DC Input Diode Current ± 20 mA IOK DC Output Diode Current ± 20 mA IO DC Output Current ± 25 mA ± 50 mA VI DC Input Voltage VO DC Output Voltage IIK ICC or IGND DC VCC or Ground Current PD Power Dissipation Tstg Storage Temperature TL Lead Temperature (10 sec) V 500(*) mW -65 to +150 °C 300 °C Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied (*) 500mW at 65 °C; derate to 300mW by 10mW/°C from 65°C to 85°C RECOMMENDED OPERATING CONDITIONS Symbol VCC Parameter Value Supply Voltage Unit 2 to 6 V VI Input Voltage 0 to VCC V VO Output Voltage 0 to VCC V Top Operating Temperature -55 to 125 °C Input Rise and Fall Time tr, tf VCC = 2.0V 0 to 1000 ns VCC = 4.5V 0 to 500 ns VCC = 6.0V 0 to 400 ns 3/10 M74HC77 DC SPECIFICATIONS Test Condition Symbol VIH VIL VOH VOL II ICC 4/10 Parameter High Level Input Voltage Low Level Input Voltage High Level Output Voltage Low Level Output Voltage Input Leakage Current Quiescent Supply Current Value TA = 25°C VCC (V) Min. 2.0 4.5 6.0 2.0 4.5 6.0 Typ. Max. 1.5 3.15 4.2 -40 to 85°C -55 to 125°C Min. Min. Max. 1.5 3.15 4.2 0.5 1.35 1.8 Max. 1.5 3.15 4.2 0.5 1.35 1.8 V 0.5 1.35 1.8 2.0 IO=-20 µA 1.9 2.0 1.9 1.9 4.5 IO=-20 µA 4.4 4.5 4.4 4.4 6.0 IO=-20 µA 5.9 6.0 5.9 5.9 4.5 IO=-4.0 mA 4.18 4.31 4.13 4.10 5.68 Unit V V 6.0 IO=-5.2 mA 2.0 IO=20 µA 0.0 0.1 0.1 0.1 4.5 IO=20 µA 0.0 0.1 0.1 0.1 6.0 IO=20 µA 0.0 0.1 0.1 0.1 4.5 IO=4.0 mA 0.17 0.26 0.33 0.40 6.0 IO=5.2 mA 0.18 0.26 0.33 0.40 6.0 VI = VCC or GND ± 0.1 ±1 ±1 µA 6.0 VI = VCC or GND 2 20 40 µA 5.8 5.63 5.60 V M74HC77 AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6ns) Test Condition Symbol Parameter tTLH tTHL Output Transition Time tPLH tPHL Propagation Delay Time (D - Q) tPLH tPHL Propagation Delay Time (G-Q) tW(H) ts th Minimum Pulse Width (G) Minimum Set-up Time Minimum Hold Time Value TA = 25°C VCC (V) Min. 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 Typ. Max. 30 8 7 39 13 11 39 13 11 15 6 6 15 3 3 75 15 13 100 20 17 100 20 17 75 15 13 50 10 9 25 5 4 -40 to 85°C -55 to 125°C Min. Min. Max. 95 19 16 125 25 21 125 25 21 95 19 16 65 13 11 30 6 5 Unit Max. 110 22 19 150 30 26 150 30 26 110 22 19 75 15 13 40 8 7 ns ns ns ns ns ns CAPACITIVE CHARACTERISTICS Test Condition Symbol Parameter VCC (V) Value TA = 25°C Min. Typ. Max. 10 CIN Input Capacitance 5.0 5 CPD Power Dissipation Capacitance (note 1) 5.0 20 -40 to 85°C -55 to 125°C Min. Min. Max. 10 Unit Max. 10 pF pF 1) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. ICC(opr) = CPD x VCC x fIN + ICC/4(per LATCH) 5/10 M74HC77 TEST CIRCUIT CL = 50pF or equivalent (includes jig and probe capacitance) RT = ZOUT of pulse generator (typically 50Ω) WAVEFORM : PROPAGATION DELAY, MINIMUM PULSE WIDTH, SETUP AND HOLD TIME (f=1MHz; 50% duty cycle) 6/10 M74HC77 Plastic DIP-14 MECHANICAL DATA mm. inch DIM. MIN. a1 0.51 B 1.39 TYP MAX. MIN. TYP. MAX. 0.020 1.65 0.055 0.065 b 0.5 0.020 b1 0.25 0.010 D 20 0.787 E 8.5 0.335 e 2.54 0.100 e3 15.24 0.600 F 7.1 0.280 I 5.1 0.201 L Z 3.3 1.27 0.130 2.54 0.050 0.100 P001A 7/10 M74HC77 SO-14 MECHANICAL DATA DIM. mm. MIN. TYP A a1 inch MAX. MIN. TYP. 1.75 0.1 0.068 0.2 a2 MAX. 0.003 0.007 1.65 0.064 b 0.35 0.46 0.013 0.018 b1 0.19 0.25 0.007 0.010 C 0.5 0.019 c1 45° (typ.) D 8.55 8.75 0.336 0.344 E 5.8 6.2 0.228 0.244 e 1.27 0.050 e3 7.62 0.300 F 3.8 4.0 0.149 0.157 G 4.6 5.3 0.181 0.208 L 0.5 1.27 0.019 0.050 M S 0.68 0.026 8° (max.) PO13G 8/10 M74HC77 TSSOP14 MECHANICAL DATA mm. inch DIM. MIN. TYP A MAX. MIN. TYP. MAX. 1.2 A1 0.05 A2 0.8 b 0.047 0.15 0.002 0.004 0.006 1.05 0.031 0.039 0.041 0.19 0.30 0.007 0.012 c 0.09 0.20 0.004 0.0089 D 4.9 5 5.1 0.193 0.197 0.201 E 6.2 6.4 6.6 0.244 0.252 0.260 E1 4.3 4.4 4.48 0.169 0.173 0.176 1 e 0.65 BSC K 0° L 0.45 A 0.60 0.0256 BSC 8° 0° 0.75 0.018 8° 0.024 0.030 A2 A1 b e K c L E D E1 PIN 1 IDENTIFICATION 1 0080337D 9/10 M74HC77 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. 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