74F2241

INTEGRATED CIRCUITS 74F2240 Octal inverter buffer with 30Ω equivalent output termination (3-State) 74F2241 Octal buffer with 30Ω equivalent output termination (3-State) Product specification IC15 Data Handbook 1990 Dec 13 Philips Semiconductors Philips Semiconductors Product specification Octal buffers 74F2240, 74F2241 FEATURES Octal bus interface 30Ω output termination ideal for driving DRAM 15mA source current DESCRIPTION The 74F2240 and 74F2241 are octal buffers that are ideal for driving dynamic DRAM with impedance matching. The outputs are all capable of sinking 5mA and sourcing up to 15mA. The device features two output enables, each controlling four of the 3-state outputs. TYPICAL PROPAGATION DELAY 4.3ns 4.5ns TYPICAL SUPPLY CURRENT (TOTAL) 37mA 30mA PIN CONFIGURATION 74F2240 OEa 1 Ia0 2 Yb0 3 Ia1 4 Yb1 5 Ia2 6 Yb2 7 Ia3 8 Yb3 9 GND 10 20 VCC 19 OEb 18 Ya0 17 Ib0 16 Ya1 15 Ib1 14 Ya2 13 Ib2 12 Ya3 11 Ib3 SF00561 TYPE 74F2240 74F2241 LOGIC SYMBOL 74F2240 2 4 6 8 17 15 13 11 ORDERING INFORMATION ORDER CODE DESCRIPTION COMMERCIAL RANGE VCC = 5V ±10%, Tamb = 0°C to +70°C N74F2240N, N74F2241N N74F2240D, N74F2241D PKG DWG # 1 19 Ia0 Ia1 Ia2 Ia3 Ib0 Ib1 Ib2 Ib3 OEa OEb Ya0 Ya1 Ya2 Ya3 Yb0 Yb1 Yb2 Yb3 20-pin plastic DIP 20-pin plastic SOL SOT146-1 SOT163-1 INPUT AND OUTPUT LOADING AND FAN-OUT TABLE PINS Ian, Ibn OEa, OEb OEb Yan, Ybn DESCRIPTION Data inputs Output enable inputs (active Low) Output enable input (74F2241) Data outputs (74F2241) 74F (U.L.) ...