Datasheet

ManualsBrandsNXP SEMICONDUCTORS ManualsLogic ICsLogic IC - Receiver, transceiver SSOP 20

1. General description

The 74LVC245A; 74LVCH245A are 8-bit transceivers featuring non-inverting 3-state bus

compatible outputs in both send and receive directions. The device features an output

enable (OE

) input for easy cascading and a send/receive (DIR) input for direction control.

controls the outputs so that the buses are effectively isolated.

Inputs can be driven from either 3.3 V or 5 V devices. When disabled, up to 5.5 V can be

applied to the outputs. These features allow the use of these devices in mixed

3.3 V and 5 V applications.

The 74LVCH245A bus hold on data inputs eliminates the need for external pull-up

resistors to hold unused inputs.

2. Features and benefits

 5 V tolerant inputs/outputs for interfacing with 5 V logic

 Wide supply voltage range from 1.2 V to 3.6 V

 CMOS low-power consumption

 Direct interface with TTL levels

 Inputs accept voltages up to 5.5 V

 High-impedance when V

= 0 V

 Bus hold on all data inputs (74LVCH245A only)

 Complies with JEDEC standard:

 JESD8-7A (1.65 V to 1.95 V)

 JESD8-5A (2.3 V to 2.7 V)

 JESD8-C/JESD36 (2.7 V to 3.6 V)

 ESD protection:

 HBM JESD22-A114F exceeds 2000 V

 MM JESD22-A115B exceeds 200 V

 CDM JESD22-C101E exceeds 1000 V

 Specified from 40 C to +85 C and 40 C to +125 C

74LVC245A; 74LVCH245A

Octal bus transceiver; 3-state

Rev. 8 — 28 June 2013 Product data sheet

Summary of content (18 pages)

PAGE 1
74LVC245A; 74LVCH245A Octal bus transceiver; 3-state Rev. 8 — 28 June 2013 Product data sheet 1. General description The 74LVC245A; 74LVCH245A are 8-bit transceivers featuring non-inverting 3-state bus compatible outputs in both send and receive directions. The device features an output enable (OE) input for easy cascading and a send/receive (DIR) input for direction control. OE controls the outputs so that the buses are effectively isolated. Inputs can be driven from either 3.3 V or 5 V devices.
PAGE 2
74LVC245A; 74LVCH245A NXP Semiconductors Octal bus transceiver; 3-state 3. Ordering information Table 1. Ordering information Type number Package 74LVC245AD Temperature range Name Description Version 40 C to +125 C SO20 plastic small outline package; 20 leads; body width 7.5 mm SOT163-1 40 C to +125 C SSOP20 plastic shrink small outline package; 20 leads; body width 5.
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74LVC245A; 74LVCH245A NXP Semiconductors Octal bus transceiver; 3-state 5. Pinning information 5.
PAGE 4
74LVC245A; 74LVCH245A NXP Semiconductors Octal bus transceiver; 3-state 6. Functional description Table 3. Function selection[1] Inputs Inputs/outputs OE DIR An Bn L L An = Bn inputs L H inputs Bn = An H X Z Z [1] H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high impedance OFF-state. 7. Limiting values Table 4. Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
PAGE 5
74LVC245A; 74LVCH245A NXP Semiconductors Octal bus transceiver; 3-state 8. Recommended operating conditions Table 5. Recommended operating conditions Symbol Parameter Conditions VCC supply voltage VI input voltage VO output voltage Min Typ Max Unit 1.65 - 3.6 V functional 1.2 - 3.6 V 0 - 5.5 V output HIGH or LOW 0 - VCC V output 3-state 0 - 5.5 V Tamb ambient temperature in free air 40 - +125 C t/V input transition rise and fall rate VCC = 1.2 V to 2.
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74LVC245A; 74LVCH245A NXP Semiconductors Octal bus transceiver; 3-state Table 6. Static characteristics …continued At recommended operating conditions. Voltages are referenced to GND (ground = 0 V). Symbol Parameter 40 C to +85 C Conditions [3] 40 C to +125 C Unit Min Typ[1] Max Min Max - 0.1 5 - 20 A IOZ OFF-state VI = VIH or VIL; output current VO = 5.5 V or GND; VCC = 3.6 V IOFF power-off leakage current VI or VO = 5.5 V; VCC = 0.0 V - 0.
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4LVC245A; 74LVCH245A NXP Semiconductors Octal bus transceiver; 3-state 10. Dynamic characteristics Table 7. Dynamic characteristics Voltages are referenced to GND (ground = 0 V). For test circuit see Figure 7. Symbol Parameter propagation delay tpd enable time ten 40 C to +85 C Conditions Min Max Min Max - 17.0 - - - ns VCC = 1.65 V to 1.95 V 1.5 6.5 14.6 1.5 16.9 ns VCC = 2.3 V to 2.7 V 1.0 3.4 7.6 1.0 8.7 ns VCC = 2.7 V 1.5 3.4 7.3 1.5 9.5 ns VCC = 3.0 V to 3.
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74LVC245A; 74LVCH245A NXP Semiconductors Octal bus transceiver; 3-state 11. AC waveforms VI An, Bn input VM VM GND tPLH tPHL VOH VM Bn, An output VM VOL mna176 See Table 8 for measurement points VOL and VOH are typical output voltage levels that occur with the output load. Fig 5.
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74LVC245A; 74LVCH245A NXP Semiconductors Octal bus transceiver; 3-state VI tW 90 % negative pulse VM 0V tf tr tr tf VI 90 % positive pulse 0V VM 10 % VM VM 10 % tW VEXT VCC VI RL VO G DUT RT RL CL 001aae331 Test data is given in Table 9. Definitions for test circuit: RL = Load resistance. CL = Load capacitance including jig and probe capacitance. RT = Termination resistance should be equal to output impedance Zo of the pulse generator.
PAGE 10
74LVC245A; 74LVCH245A NXP Semiconductors Octal bus transceiver; 3-state 12. Package outline SO20: plastic small outline package; 20 leads; body width 7.5 mm SOT163-1 D E A X c HE y v M A Z 20 11 Q A2 A (A 3) A1 pin 1 index θ Lp L 10 1 e detail X w M bp 0 5 10 mm scale DIMENSIONS (inch dimensions are derived from the original mm dimensions) UNIT A max. A1 A2 A3 bp c D (1) E (1) e HE L Lp Q v w y mm 2.65 0.3 0.1 2.45 2.25 0.25 0.49 0.36 0.32 0.23 13.0 12.6 7.
PAGE 11
74LVC245A; 74LVCH245A NXP Semiconductors Octal bus transceiver; 3-state SSOP20: plastic shrink small outline package; 20 leads; body width 5.3 mm D SOT339-1 E A X c HE y v M A Z 20 11 Q A2 A (A 3) A1 pin 1 index θ Lp L 1 10 w M bp e detail X 0 2.5 5 mm scale DIMENSIONS (mm are the original dimensions) UNIT A max. A1 A2 A3 bp c D (1) E (1) e HE L Lp Q v w y Z (1) θ mm 2 0.21 0.05 1.80 1.65 0.25 0.38 0.25 0.20 0.09 7.4 7.0 5.4 5.2 0.65 7.9 7.6 1.25 1.
PAGE 12
74LVC245A; 74LVCH245A NXP Semiconductors Octal bus transceiver; 3-state TSSOP20: plastic thin shrink small outline package; 20 leads; body width 4.4 mm SOT360-1 E D A X c HE y v M A Z 11 20 Q A2 (A 3) A1 pin 1 index A θ Lp L 1 10 detail X w M bp e 0 2.5 5 mm scale DIMENSIONS (mm are the original dimensions) UNIT A max. A1 A2 A3 bp c D (1) E (2) e HE L Lp Q v w y Z (1) θ mm 1.1 0.15 0.05 0.95 0.80 0.25 0.30 0.19 0.2 0.1 6.6 6.4 4.5 4.3 0.65 6.6 6.
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74LVC245A; 74LVCH245A NXP Semiconductors Octal bus transceiver; 3-state DHVQFN20: plastic dual in-line compatible thermal enhanced very thin quad flat package; no leads; SOT764-1 20 terminals; body 2.5 x 4.5 x 0.85 mm A B D A A1 E c detail X terminal 1 index area terminal 1 index area C e1 e 2 9 y y1 C v M C A B w M C b L 1 10 Eh e 20 11 19 12 Dh X 0 2.5 5 mm scale DIMENSIONS (mm are the original dimensions) UNIT mm A(1) max. A1 b 1 0.05 0.00 0.30 0.
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74LVC245A; 74LVCH245A NXP Semiconductors Octal bus transceiver; 3-state DHXQFN20U: plastic dual in-line compatible thermal enhanced extremely thin quad flat package; no leads; 20 terminals; UTLP based; body 2.5 x 4.5 x 0.5 mm B D SOT1045-1 A A E A1 detail X terminal 1 index area terminal 1 index area e1 v w b e L1 2 M M C C A B C y y1 C 9 L 10 1 Eh e 20 11 19 12 X Dh 0 2.
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74LVC245A; 74LVCH245A NXP Semiconductors Octal bus transceiver; 3-state 13. Abbreviations Table 10. Abbreviations Acronym Description CDM Charged Device Model CMOS Complementary Metal Oxide Semiconductor DUT Device Under Test ESD ElectroStatic Discharge HBM Human Body Model MM Machine Model TTL Transistor-Transistor Logic 14. Revision history Table 11. Revision history Document ID Release date Data sheet status Change notice Supersedes 74LVC_LVCH245A v.
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74LVC245A; 74LVCH245A NXP Semiconductors Octal bus transceiver; 3-state 15. Legal information 15.1 Data sheet status Document status[1][2] Product status[3] Definition Objective [short] data sheet Development This document contains data from the objective specification for product development. Preliminary [short] data sheet Qualification This document contains data from the preliminary specification. Product [short] data sheet Production This document contains the product specification.
PAGE 17
74LVC245A; 74LVCH245A NXP Semiconductors Octal bus transceiver; 3-state Export control — This document as well as the item(s) described herein may be subject to export control regulations. Export might require a prior authorization from competent authorities. Non-automotive qualified products — Unless this data sheet expressly states that this specific NXP Semiconductors product is automotive qualified, the product is not suitable for automotive use.
PAGE 18
NXP Semiconductors 74LVC245A; 74LVCH245A Octal bus transceiver; 3-state 17. Contents 1 2 3 4 5 5.1 5.2 6 7 8 9 10 11 12 13 14 15 15.1 15.2 15.3 15.4 16 17 General description . . . . . . . . . . . . . . . . . . . . . . 1 Features and benefits . . . . . . . . . . . . . . . . . . . . 1 Ordering information . . . . . . . . . . . . . . . . . . . . . 2 Functional diagram . . . . . . . . . . . . . . . . . . . . . . 2 Pinning information . . . . . . . . . . . . . . . . . . . . . . 3 Pinning . . . . . . . . . .