HD74LS77 4-bit Bistable Latches REJ03D0418–0300 Rev.3.00 Jul.22.2005 The HD74LS77 is ideally suited for use as temporary storage for binary information between processing units and input / output or indicator units. Information present at a data (D) input is transferred to the Q output when the enable (G) is high and the Q output will follow the data input as long as the enable remains high. When the enable goes low, the information (that was present at the data input at the time the transition occurred) is retained at the Q output until the enable is permitted to go high. Features • Ordering Information Part Name Package Type HD74LS77FPEL SOP-14 pin (JEITA) Package Code (Previous Code) PRSP0014DF-B (FP-14DAV) Package Abbreviation Taping Abbreviation (Quantity) FP EL (2,000 pcs/reel) Pin Arrangement 1D 1 14 1Q 2 Q D G 2D 13 2Q Enable 3-4 3 D 12 Enable 1-2 VCC 4 11 GND 10 NC 9 3Q 8 4Q 3D 5 4D 6 NC 7 G Q Q D G D G Q (Top view) Function Table D Inputs G Outputs Q L H H H L H X H; high level, L; low level, X; irrelevant L Q0 Rev.3.00, Jul.22.2005, page 1 of 4 HD74LS77 Block Diagram (1/4) Data Q To Other Latch Enable Absolute Maximum Ratings Symbol Ratings Unit Supply voltage Input voltage Item VCC VIN 7 7 V V Power dissipation Storage temperature PT Tstg 400 –65 to +150 mW °C Note: Voltage value, unless otherwise noted, are with respect to network ground terminal. Recommended Operating Conditions Item Symbol Min Typ Max Unit VCC IOH 4.75 — 5.00 — 5.25 –400 V µA IOL Topr — –20 — 25 8 75 mA °C Pulse width Setup time tw tsu 20 20 — — — — ns ns Hold time th 5 — — ns Supply voltage Output current Operating temperature Electrical Characteristics (Ta = –20 to +75 °C) Item Input voltage Symbol min. typ.* max. Unit VIH VIL 2.0 — — — — 0.8 V V VOH 2.7 — — V — — 0.4 — — — — 0.5 20 — — — — 80 –0.4 — — — — –1.6 0.1 — — 0.4 IOS –20 — ICC VIK — — 6.9 — Output voltage VOL D Input current G D G D G Short-circuit output current Supply current** Input clamp voltage IIH IIL II V VCC = 4.75 V, VIH = 2 V, VIL = 0.8 V, IOH = –400 µA IOL = 4 mA VCC = 4.75 V, VIH = 2 V, VIL = 0.8 V IOL = 8 mA µA VCC = 5.25 V, VI = 2.7 V mA VCC = 5.25 V, VI = 0.4 V mA VCC = 5.25 V, VI = 7 V –100 mA VCC = 5.25 V 13 –1.5 mA V VCC = 5.25 V VCC = 4.75 V, IIN = –18 mA Notes: * VCC = 5 V, Ta = 25°C ** ICC is measured with all outputs open and all inputs grounded. Rev.3.00, Jul.22.2005, page 2 of 4 Condition HD74LS77 Switching Characteristics (VCC = 5 V, Ta = 25°C) Item Symbol tPLH Inputs Outputs D Q tPHL tPLH Propagation delay time G tPHL min. — typ. 11 max. 19 — — 9 10 17 18 — 10 18 Q Unit ns Condition CL = 15 pF, RL = 2 kΩ Testing Method Test Circuit VCC Output Input RL P.G. Zout = 50Ω D Q Input CL P.G. Zout = 50Ω Notes: G 1. Test is put into the each latch. 2. CL includes probe and jig capacitance. 3. All diodes are 1S2074(H). Waveform 1µs tTLH D 90% 1.3 V 1µs tTHL 3V 90% 1.3 V 1.3 V 10% 10% tsu tTLH th tTHL 3V 90% 90% 1.3 V 1.3 V 10% 10% G 0V tsu th tw 1.3 V 1.3 V 0V tw tPLH VOH Q 1.3 V tPLH Notes: tPHL 1.3 V VOL tPHL 1. Input pulse; tTLH ≤ 10 ns, tTHL ≤ 10 ns. 2. When measuring propagation delay times from the D input, the corresponding G input must be held high. Rev.3.00, Jul.22.2005, page 3 of 4 HD74LS77 Package Dimensions JEITA Package Code P-SOP14-5.5x10.06-1.27 RENESAS Code PRSP0014DF-B *1 Previous Code FP-14DAV D MASS[Typ.] 0.23g NOTE) 1. DIMENSIONS"*1 (Nom)"AND"*2" DO NOT INCLUDE MOLD FLASH. 2. DIMENSION"*3"DOES NOT INCLUDE TRIM OFFSET. F 14 8 c HE *2 E bp Index mark Reference Symbol Terminal cross section ( Ni/Pd/Au plating ) 1 Z *3 Nom Max D 10.06 10.5 E 5.50 A2 7 e A1 bp Dimension in Millimeters Min x M 0.00 0.10 0.20 0.34 0.40 0.46 0.15 0.20 0.25 7.80 8.00 2.20 A L1 bp b1 c A c A1 θ y L Detail F 1 θ 0° HE 7.50 1.27 e x 0.12 y 0.15 Z 1.42 0.50 L L Rev.3.00, Jul.22.2005, page 4 of 4 8° 1 0.70 1.15 0.90 Sales Strategic Planning Div. Nippon Bldg., 2-6-2, Ohte-machi, Chiyoda-ku, Tokyo 100-0004, Japan Keep safety first in your circuit designs! 1. Renesas Technology Corp. puts the maximum effort into making semiconductor products better and more reliable, but there is always the possibility that trouble may occur with them. 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