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HD74BC541A
Octal Buffers/Line Drivers With 3 State Outputs
REJ03D0286-0200Z (Previous ADE-205-023 (Z)) Rev.2.00 Jul.16.2004
Description
The HD74BC541A provides high drivability and operation equal to or better than high speed bipolar standard logic IC by using Bi-CMOS process. The device features low power dissipation that is about 1/5 of high speed bipolar logic IC, when the frequency is 10 MHz. The device has eight inverter drivers with three state outputs in a 20 pin package. When G1 and G2 is low level, this drivers set up output is enable.
Features
* Input/Output are at high impedance state when power supply is off. * Built in input pull up circuit can make input pins be open, when not used. * Input is TTL level. * Wide operating temperature range Ta = -40 to +85C * Ordering Information
Part Name HD74BC541AFPEL Package Type Package Code FP Package Abbreviation Taping Abbreviation (Quantity) EL (2,000 pcs/reel)
SOP-20 pin (JEITA) FP-20DAV
Function Table
Inputs G1 L L H X H L X Z : : : : High level Low level Immaterial High impedance L L X H G2 L H X X A L H Z Z Output Y
Rev.2.00, Jul.16.2004, page 1 of 7
HD74BC541A
Pin Arrangement
G1 A1 A2 A3 A4 A5 A6 A7 A8 GND
1 2 3 4 5 6 7 8 9 10
20 19 18 17 16 15 14 13 12 11
VCC G2 Y1 Y2 Y3 Y4 Y5 Y6 Y7 Y8
(Top view)
Absolute Maximum Ratings
Item Supply voltage Input diode current Input voltage Output voltage VCC IIK VIN VOUT Symbol Rating -0.5 to +7.0 30 -0.5 to +7.5 -0.5 to +7.5 V mA V V Unit
Off state output voltage VOUT(off) -0.5 to +5.5 V Storage temperature Tstg -65 to +150 C Note: 1. The absolute maximum ratings are values which must not individually be exceeded, and furthermore, no two of which may be realized at the same time.
Recommended Operating Conditions
Item Supply voltage Input voltage Ouput voltage Operating temperature VCC VIN VOUT Topr Symbol 4.5 0 0 -40 Min 5.0 -- -- -- Typ 5.5 VCC VCC 85 8 Max V V V C ns/V Unit
Input rise/fall time*1 tr , tf 0 -- Note: 1. This item guarantees maximum limit when one input switches. Waveform: Refer to test circuit of switching characteristics.
Rev.2.00, Jul.16.2004, page 2 of 7
HD74BC541A
Logic Diagram
G1 G2 A1 A2 A3 A4 A5 A6 A7 A8 Y1 Y2 Y3 Y4 Y5 Y6 Y7 Y8
Rev.2.00, Jul.16.2004, page 3 of 7
HD74BC541A
Electrical Characteristics (Ta = -40 to +85C)
Item Input voltage Output voltage Symbol VIH VIL VOH VOL Input diode voltage Input current VIK II 4.5 4.5 4.5 4.5 4.5 5.5 5.5 5.5 Short circuit output current*1 Off state output current Supply current IOS IOZH IOZL ICCL ICCH ICCZ 5.5 5.5 5.5 5.5 5.5 5.5 VCC(V) Min 2.0 -- 2.4 2.0 -- -- -- -- -- -- -100 -- -- -- -- -- Max -- 0.8 -- -- 0.5 0.55 -1.2 -250 1.0 100 -225 50 -50 29.5 0.5 2.5 V V V V V V V A A A mA A A mA mA mA IOH = -3 mA IOH = -15 mA IOL = 48 mA IOL = 64 mA IIN = -18 mA VIN = 0 V VIN = 5.5 V VIN = 7.0 V VIN = 0 or 5.5 V VO = 2.7 V VO = 0.5 V VIN = VCC or GND All outputs is "L" VIN = VCC or GND All outputs is "H" VIN = VCC or GND All outputs is "Z" Unit Test Conditions
ICCT*2 5.5 -- 1.5 mA VIN = 3.4V or 0.5V Notes: 1. Not more than one output should be shorted at a time and duration of the short circuit should not exceed one second. 2. When input by the TTL level, it shows ICC increase at per one input pin.
Switching Characteristics (CL = 50 pF)
Ta = 25C VCC = 5.0 V Item Propagation delay time Output enable time Output disable time Input capacitance Output capacitance Symbol Min tPLH 3.0 tPHL tZH tZL tHZ tLZ CIN CO 3.0 3.0 3.0 3.0 Max 6.0 6.0 9.0 9.0 8.0 Ta = -40 to +85C VCC = 5.0 V 10% Min 3.0 3.0 3.0 3.0 3.0 3.0 -- -- Max 7.0 7.0 11.0 11.0 10.0 10.0 pF pF VIN = VCC or GND VO = VCC or GND Unit Test Conditions ns See under figure ns ns
3.0 8.0 3.0 (Typ) 15.0 (Typ)
Rev.2.00, Jul.16.2004, page 4 of 7
HD74BC541A Test circuit
VCC VCC
G1 Input
See Function Table
Output
*3
Pulse Generator Zout = 50
A1
Y1 CL = 50 pF
500 450 50 Scope
OPEN 7V
G2
Notes:
1. CL includes probe and jig capacitance. 2. A2-Y2 to A8-Y8 are identical to above load circuit. 3. Open: tPLH, tPHL, tZH, tHZ 7V: tZL, tLZ
Rev.2.00, Jul.16.2004, page 5 of 7
HD74BC541A Waveforms-1
tr Input A 90 % 1.5 V t PLH 1.5 V 90 % 1.5 V tf 3V 10 % t PHL VOH Output Y 1.5 V VOL 0V
10 %
Waveforms-2
tf Input G 90 % 1.5 V 10 % t ZL Waveform-A 1.5 V t ZH Waveform-B 1.5 V t HZ VOH - 0.3 V tr 90 % 1.5 V 10 % t LZ VOL + 0.3 V 3V 0V 3.5 V VOL VOH 0V
Notes:
1. tr = 2.5 ns, tf = 2.5 ns 2. Input waveforms: PRR = 1 MHz, duty cycle 50% 3. Waveform-A shows input conditions such that the output is "L" level when enable by the output control. 4. Waveform-B shows input conditions such that the output is "H" level when enable by the output control.
Rev.2.00, Jul.16.2004, page 6 of 7
HD74BC541A
Package Dimensions
As of January, 2003
12.6 13 Max
20
Unit: mm
11
1
10
5.5
0.80 Max
2.20 Max
*0.20 0.05
0.20 7.80 + 0.30 -
1.15
1.27
*0.40 0.06
0.10 0.10
0 - 8
0.70 0.20
0.15
0.12 M
*Ni/Pd/Au plating
Package Code JEDEC JEITA Mass (reference value)
FP-20DAV -- Conforms 0.31 g
Rev.2.00, Jul.16.2004, page 7 of 7
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