74HC7540DB,112 Nexperia

74HC7540 74HCT7540 Octal Schmitt trigger buffer/line driver 3-state inverting Rev. 6 4 August 2021 Product data sheet 1. General description The 74HC7540 74HCT7540 is an 8-bit inverting buffer/line driver with Schmitt-trigger inputs and 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. This enables the use of current limiting resistors to interface inputs to voltages in excess of V . Schmitt trigger CC inputs transform slowly changing input signals into sharply defined jitter-free output signals. 2. Features and benefits Wide supply voltage range from 2.0 to 6.0 V CMOS low power dissipation High noise immunity Unlimited input rise and fall times Latch-up performance exceeds 100 mA per JESD 78 Class II Level B Inverting outputs Input levels: For 74HC7540: CMOS level For 74HCT7540: TTL level Complies with JEDEC standards JESD8C (2.7 V to 3.6 V) JESD7A (2.0 V to 6.0 V) ESD protection: HBM JESD22-A114F exceeds 2000 V MM JESD22-A115-A exceeds 200 V Multiple package options Specified from -40 C to +85 C and from -40 C to +125 C 3. Ordering information Table 1. Ordering information Type number Package Temperature range Name Description Version 74HC7540D -40 C to +125 C SO20 plastic small outline package 20 leads SOT163-1 body width 7.5 mm 74HCT7540D 74HC7540DB -40 C to +125 C SSOP20 plastic shrink small outline package 20 leads SOT339-1 body width 5.3 mm 74HC7540PW -40 C to +125 C TSSOP20 plastic thin shrink small outline package 20 leads SOT360-1 body width 4.4 mmNexperia 74HC7540 74HCT7540 Octal Schmitt trigger buffer/line driver 3-state inverting 4. Functional diagram Y0 A0 2 18 Y1 A1 3 17 Y2 A2 4 16 Y3 A3 5 15 1 & EN Y4 A4 6 14 19 Y5 2 18 A5 7 13 3 17 4 16 Y6 A6 8 12 5 15 6 14 Y7 A7 9 11 7 13 8 12 OE1 1 9 11 19 OE2 aaa-003597 aaa-003598 Fig. 1. Logic symbol Fig. 2. IEC logic symbol 5. Pinning information 5.1. Pinning 74HC7540 74HC7540 74HCT7540 74HCT7540 OE1 1 20 V CC OE1 1 20 V CC A0 2 19 OE2 A0 2 19 OE2 A1 3 18 Y0 A1 3 18 Y0 A2 4 17 Y1 A2 4 17 Y1 5 16 A3 Y2 A3 5 16 Y2 A4 6 15 Y3 A4 6 15 Y3 A5 7 14 Y4 A5 7 14 Y4 A6 8 13 Y5 A6 8 13 Y5 A7 9 12 Y6 A7 9 12 Y6 GND 10 11 Y7 GND 10 11 Y7 aaa-003600 aaa-003599 Fig. 4. Pin configuration SOT339-1 (SSOP20) and Fig. 3. Pin configuration SOT163-1 (SO20) SOT360-1 (TSSOP20) 74HC HCT7540 All information provided in this document is subject to legal disclaimers. Nexperia B.V. 2021. All rights reserved Product data sheet Rev. 6 4 August 2021 2 / 15