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HD74HC540

Hitachi Semiconductor
Part Number HD74HC540
Manufacturer Hitachi Semiconductor
Description Octal Buffers/Line Drivers
Published Mar 23, 2005
Detailed Description HD74HC540/HD74HC541 Octal Buffers/Line Drivers (with 3-state outputs) Description The HD74HC540 is an inverting buffer ...
Datasheet PDF File HD74HC540 PDF File

HD74HC540
HD74HC540

Overview
HD74HC540/HD74HC541 Octal Buffers/Line Drivers (with 3-state outputs) Description The HD74HC540 is an inverting buffer and the HD74HC541 is a non-inverting buffer.
The 3-state control gate operates as a two-input NOR such that if either G 1 or G 2 are high, all eight outputs are in the highimpedance state.
Features • • • • • High Speed Operation: tpd = 11.
5 ns typ (CL = 50 pF) High Output Current: Fanout of 15 LSTTL Loads Wide Operating Voltage: VCC = 2 to 6 V Low Input Current: 1 µA max Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C) Function Table Inputs G1 L L H X X : Z : G2 L L X H A L H X X Output Y HD74HC540 H L Z Z HD74HD541 L H Z Z irrelevant off (high-impedance) state of a 3-state output.
HD74HC540/HD74HC541 Pin Arrangement HD74HC540 G1 A1 A2 A3 A4 A5 A6 A7 A8 1 20 VCC 19 G2 18 Y1 17 Y2 16 Y3 15 Y4 14 Y5 2 3 4 5 6 7 8 9 13 Y6 12 Y7 11 Y8 GND 10 (Top view) 2 HD74HC540/HD74HC541 HD74HC541 G1 A1 A2 A3 A4 A5 A6 A7 A8 1 20 VCC 19 G2 18 Y1 17 Y2 16 Y3 15 Y4 14 Y5 2 3 4 5 6 7 8 9 13 Y6 12 Y7 11 Y8 GND 10 (Top view) Absolute Maximum Ratings Item Supply voltage range Input voltage Output voltage Output current DC current drai per VCC GND DC input diode current DC output diode current Power Dissipation per package Storage temperature Symbol VCC VIN VOUT I OUT I CC, I GND I IK I OK PT Tstg Rating –0.
5 to +7.
0 –0.
5 to VCC + 0.
5 –0.
5 to VCC + 0.
5 ±35 ±75 ±20 ±20 500 –65 to +150 Unit V V V mA mA mA mA mW °C 3 HD74HC540/HD74HC541 DC Characteristics Ta = 25°C Item Input voltage Symbol VIH Ta = –40 to +85°C Max — — — 0.
3 1.
35 1.
8 — — — — — — — — 0.
1 0.
1 0.
1 0.
33 0.
33 ±5.
0 ±1.
0 40 µA µA µA I OL = 6 mA I OL = 7.
8 mA Vin = VIH or VIL, Vout = VCC or GND Vin = VCC or GND Vin = VCC or GND, Iout = 0 µA V I OH = –6 mA I OH = –7.
8 mA Vin = VIH or VIL I OL = 20 µA V Vin = VIH or VIL I OH = –20 µA V V Unit V Test Conditions VCC (V) Min Typ Max Min 2.
0 4.
5 6.
0 1.
5 — 3.
15 — 4.
2 — — — — — — — — — — — — — 0.
3 1.
5 3.
15 4.
2 — VIL 2.
0 4.
5 6.
0 1.
3...


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