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74F2244

Philips
Part Number 74F2244
Manufacturer Philips
Description Octal buffer
Published May 28, 2005
Detailed Description INTEGRATED CIRCUITS 74F2244 Octal buffer with 30Ω equivalent output termination (3-State) Product specification IC15 Da...
Datasheet PDF File 74F2244 PDF File

74F2244
74F2244

Overview
INTEGRATED CIRCUITS 74F2244 Octal buffer with 30Ω equivalent output termination (3-State) Product specification IC15 Data Handbook 1994 Dec 5 Philips Semiconductors Philips Semiconductors Product specification Octal buffer with 30Ω equivalent output termination (3-State) 74F2244 FEATURES • Octal bus interface • 30Ω output termination ideal for driving DRAM • 15mA source current • SSOP Type II Package DESCRIPTION The 74F2244 is an octal buffer that is ideal for driving dynamic DRAM with matching impedance.
The outputs are all capable of sinking 5mA and sourcing up to 15mA.
The device features two output enables, OEa and OEb, each controlling four of the 3–state outputs.
TYPICAL PROPAGATION DELAY 4.
0ns TYPICAL SUPPLY CURRENT (TOTAL) 30mA TYPE 74F2244 ORDERING INFORMATION ORDER CODE DESCRIPTION 20-pin plastic DIP 20-pin plastic SOL 20-pin plastic SSOP Type II COMMERCIAL RANGE VCC = 5V ±10%, Tamb = 0°C to +70°C N74F2244N N74F2244D N74F2244DB DRAWING NUMBER SOT146-1 SOT163-1 SOT339-1 INPUT AND OUTPUT LOADING AND FAN OUT TABLE PINS Ian, Ibn OEa, OEb Data inputs Output enable inputs (active low) DESCRIPTION 74F (U.
L.
) HIGH/LOW 1.
0/0.
33 1.
0/0.
33 LOAD VALUE HIGH/LOW 20µA/0.
2mA 20µA/0.
2mA 15mA/5mA Yan, Ybn Data outputs 750/8.
33 NOTE: One (1.
0) FAST unit load is defined as: 20µA in the high state and 0.
6mA in the low state.
PIN CONFIGURATION 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 LOGIC SYMBOL 2 4 6 8 17 15 13 11 Ia0 1 19 OEa OEb Ia1 Ia2 Ia3 Ib0 Ib1 Ib2 Ib3 Ya0 Ya1 Ya2 Ya3 Yb0 Yb1 Yb2 Yb3 18 VCC = Pin 20 GND = Pin 10 16 14 12 3 5 7 9 SF00227 SF00228 1994 Dec 05 2 853-1525 14380 Philips Semiconductors Product specification Octal buffer with 30Ω equivalent output termination (3-State) 74F2244 IEC/IEEE SYMBOL 1 19 EN1 EN2 LOGIC DIAGRAM Ia0 2 18 Ya0 Ib0 17 2 Yb0 2 4 6 8 17 15 13 11 2D 1 18 16 14 12 Ia1 4 16 Ya1 Ib1 15 5 Yb1 Ia2 6 14 Y...


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