M74HC259 8-bit addressable latch Datasheet - production data remain unaffected. With ENABLE in the high state, the device is deselected and all latches remain in their previous state, unaffected by SO16 TSSOP16 changes on the data or address inputs. To eliminate the possibility of entering erroneous Features data into the latches, the ENABLE should be held high (inactive) while the address lines are High speed: t = 20 ns (typ.) at V = 6 V PD CC Low power dissipation: changing. If ENABLE is held high and I = 4 A (max.) at T = 25 C CC A CLEAR is taken low, all eight latches are High noise immunity: V = V = 28 % V (min.) NIH NIL CC cleared to the low state. If ENABLE is low, all Symmetrical output impedance: latches except the addressed latch will be I = I = 4 mA (min) OH OL cleared. The addressed latch will instead follow Balanced propagation delays: t ~= t PLH PHL the D input, effectively implementing a 3-to-8 line Wide operating voltage range: decoder. V (OPR) = 2 V to 6 V CC Pin and function compatible with All inputs are equipped with protection circuits to 74 series 259 guard against static discharge and transient ESD performance excess voltage. CDM: 1 kV Table 1: Device summary HBM: 1.5 kV MM: 200 V Temperature Order code Package Packaging Marking range Description SO16 -40 C to Tape and (1) M74HC259YRM13TR (automotive 74HC259Y +125 C 1 reel The M74HC259 is a high-speed CMOS 8-bit grade) addressable latch manufactured with silicon gate 2 -55 C to Tape and C MOS technology. M74HC259RM13TR SO16 74HC259 +125 C reel The M74HC259 has single data input (D) 8 latch -55 C to Tape and outputs (Q0-Q7), 3 address inputs (A, B, and C), M74HC259TTR TSSOP16 HC259 +125 C reel common enable input (E), and a common TSSOP16 CLEAR input. To operate this device as an -40 C to Tape and 1 M74HC259YTTR HC259Y (automotive +125 C 1 reel addressable latch, data is held on the D input, grade) and the address of the latch into which the data is to be entered is held on the A, B, and C inputs. Notes: (1) When ENABLE is taken low, the data flows Qualification and characterization according to AEC Q100 and Q003 or equivalent, advanced screening according to AEC Q001 and Q002 or equivalent. through to the address outputs. The data is stored on the positive-going edge of the ENABLE pulse. All unaddressed latches will November 2013 DocID001933 Rev 2 1/19 www.st.com This is information on a product in full production. Contents M74HC259 Contents 1 Pin information ................................................................................ 5 2 Functional description .................................................................... 6 3 Electrical characteristics ................................................................ 8 4 Package information ..................................................................... 15 4.1 SO16 package information .............................................................. 15 4.2 TSSOP16 package information ....................................................... 17 5 Revision history ............................................................................ 18 2/19 DocID001933 Rev 2