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74HC541D
Octal buffer/line driver; 3-state
1. General descriptionThe 74HC541; 74HCT541 is an octal non-inverting buffer/line driver with 3-state outputs.
The device features two output enables (OE1 and OE2). A HIGH on OEn causes the
outputs to assume a high-impedance OFF-state. Inputs include clamp diodes that enable
the use of current limiting resistors to interface inputs to voltages in excess of VCC.
2. Features and benefits Non-Inverting outputs Complies with JEDEC standard no. 7A Input levels: For 74HC541: CMOS level For 74HCT541: TTL level ESD protection: HBM JESD22-A114F exceeds 2000V MM JESD22-A115-A exceeds 200V Multiple package options Specified from 40 C to +85 C and from 40 C to +125C
3. Ordering information
74HC541; 74HTC541
Octal buffer/line driver; 3-state
Rev. 3 — 15 April 2014 Product data sheet
Table 1. Ordering information
NXP Semiconductors 74HC541; 74HTC541
Octal buffer/line driver; 3-state
4. Functional diagramNXP Semiconductors 74HC541; 74HTC541
Octal buffer/line driver; 3-stateNXP Semiconductors 74HC541; 74HTC541
Octal buffer/line driver; 3-stateNXP Semiconductors 74HC541; 74HTC541
Octal buffer/line driver; 3-state
5. Pinning information
5.1 Pinning
5.2 Pin description
6. Functional description[1] H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high-impedance OFF-state.
Table 2. Pin description
Table 3. Functional table[1]
NXP Semiconductors 74HC541; 74HTC541
Octal buffer/line driver; 3-state
7. Limiting values[1] The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
[2] For DIP20 packages: above 70 C the value of Ptot derates linearly with 12 mW/K.
For SO20 packages: above 70 C the value of Ptot derates linearly with 8 mW/K.
For (T)SSOP20 packages: above 60 C the value of Ptot derates linearly with 5.5 mW/K.
8. Recommended operating conditions
Table 4. Limiting valuesIn accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Table 5. Recommended operating conditions Voltages are referenced to GND (ground = 0V)
NXP Semiconductors 74HC541; 74HTC541
Octal buffer/line driver; 3-state
9. Static characteristicsTable 6. Static characteristicsAt recommended operating conditions; voltages are referenced to GND (ground = 0 V).
NXP Semiconductors 74HC541; 74HTC541
Octal buffer/line driver; 3-state
10. Dynamic characteristics
Table 6. Static characteristics …continuedAt recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Table 7. Dynamic characteristicsGND=0 V; CL=50 pF; for test circuit, see Figure8.
NXP Semiconductors 74HC541; 74HTC541
Octal buffer/line driver; 3-state[1] tpd is the same as tPLH and tPHL.
ten is the same as tPZL and tPZH.
tdis is the same as tPLZ and tPHZ.
[2] tt is the same as tTHL and tTLH.
[3] CPD is used to determine the dynamic power dissipation (PD in W): =CPD VCC2fi N+ (CL VCC2 fo) where:= input frequency in MHz;= output frequency in MHz;= output load capacitance in pF;
VCC= supply voltage in V;= number of inputs switching;(CL VCC2fo)= sum of outputs.
Table 7. Dynamic characteristicsGND=0 V; CL=50 pF; for test circuit, see Figure8.
NXP Semiconductors 74HC541; 74HTC541
Octal buffer/line driver; 3-state
11. Waveforms
Table 8. Measurement points
