Datasheet

ManualsBrandsNXP SEMICONDUCTORS ManualsLogic ICsLogic IC - Receiver, transceiver DHVQFN 20 (4.5x 2.5)

1. General description

The 74LVT245B is a high-performance BiCMOS product designed for V

operation at

3.3 V.

This device is an octal transceiver featuring non-inverting 3-state bus compatible outputs

in both send and receive directions. The control function implementation minimizes

external timing requirements. The device features an output enable (OE) input for easy

cascading and a direction (DIR) input for direction control.

2. Features

n 3-state buffers

n Octal bidirectional bus interface

n Input and output interface capability to systems at 5 V supply

n TTL input and output switching levels

n Output capability: +64 mA/−32 mA

n Latch-up protection exceeds 500 mA per JEDEC Std 17

n ESD protection:

u HBM JESD22-A114E exceeds 2000 V

u MM JESD22-A115-A exceeds 200 V

n Bus-hold data inputs eliminate the need for external pull-up resistors for unused inputs

n Live insertion/extraction permitted

n Power-up 3-state

n No bus current loading when output is tied to 5 V bus

3. Ordering information

74LVT245B

3.3 V octal transceiver with direction pin (3-state)

Rev. 02 — 8 May 2008 Product data sheet

Table 1. Ordering information

Type number Package

Temperature range Name Description Version

74LVT245BD −40 °Cto+85°C SO20 plastic small outline package; 20 leads;

body width 7.5 mm

SOT163-1

74LVT245BDB −40 °Cto+85°C SSOP20 plastic shrink small outline package; 20 leads;

body width 5.3 mm

SOT339-1

74LVT245BPW −40 °Cto+85°C TSSOP20 plastic thin shrink small outline package; 20 leads;

body width 4.4 mm

SOT360-1

74LVT245BBQ −40 °Cto+85°C DHVQFN20 plastic dual in-line compatible thermal enhanced very

thin quad ﬂat package; no leads; 20 terminals;

body 2.5 × 4.5 × 0.85 mm

SOT764-1

Summary of content (15 pages)

PAGE 1
74LVT245B 3.3 V octal transceiver with direction pin (3-state) Rev. 02 — 8 May 2008 Product data sheet 1. General description The 74LVT245B is a high-performance BiCMOS product designed for VCC operation at 3.3 V. This device is an octal transceiver featuring non-inverting 3-state bus compatible outputs in both send and receive directions. The control function implementation minimizes external timing requirements.
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74LVT245B NXP Semiconductors 3.3 V octal transceiver with direction pin (3-state) 4. Functional diagram 1 DIR OE 2 B0 3 19 3EN1 3EN2 1 14 18 3 17 13 4 16 5 15 6 14 7 13 8 12 A6 12 A7 B7 11 9 mna174 Fig 1. 2 A5 B6 9 G3 2 B5 8 15 A4 B4 7 1 16 A3 B3 6 17 A2 B2 5 18 A1 B1 4 19 A0 Logic diagram Fig 2. 74LVT245B_2 Product data sheet 11 mna175 IEC logic symbol © NXP B.V. 2008. All rights reserved. Rev.
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74LVT245B NXP Semiconductors 3.3 V octal transceiver with direction pin (3-state) 5. Pinning information 5.
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74LVT245B NXP Semiconductors 3.3 V octal transceiver with direction pin (3-state) 6. Functional description Table 3. Function selection 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).
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74LVT245B NXP Semiconductors 3.3 V octal transceiver with direction pin (3-state) 8. Recommended operating conditions Table 5. Recommended operating conditions Symbol Parameter Conditions Min Max Unit VCC supply voltage 2.7 3.6 V VI input voltage 0 5.
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74LVT245B NXP Semiconductors 3.3 V octal transceiver with direction pin (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 Unit Min Typ[1] - - outputs HIGH - 0.13 0.19 mA outputs LOW - 3 12 mA - 0.13 0.19 mA - 0.1 0.2 mA IBHHO bus hold HIGH overdrive current VCC = 0 V to 3.0 V; VI = 3.6 V ICC supply current VCC = 3.
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4LVT245B NXP Semiconductors 3.3 V octal transceiver with direction pin (3-state) Table 7. Dynamic characteristics …continued Voltages are referenced to GND (ground = 0 V). For test circuit see Figure 7. Symbol Parameter −40 °C to +85 °C Conditions Max - - 5.1 ns 2.2 3.4 5.0 ns Min tPLZ LOW to OFF-state propagation delay see Figure 6 VCC = 2.7 V VCC = 3.3 V ± 0.3 V [1] Unit Typ[1] Typical values are measured at Tamb = 25 °C and VCC = 3.3 V 11.
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74LVT245B NXP Semiconductors 3.3 V octal transceiver with direction pin (3-state) Table 8. Measurement points VCC Input 2.7 V to 3.6 V Output VIN VM VM Vx Vy GND to 2.7 V 1.5 V 1.5 V VOL + 0.3 V VOH − 0.3 V tW VI 90 % negative pulse VM VM 10 % 0V VI tf tr tr tf 90 % positive pulse VM VM 10 % 0V tW VEXT VCC PULSE GENERATOR VI RL VO DUT RT CL RL 001aae235 Test data is given in Table 9.
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74LVT245B NXP Semiconductors 3.3 V octal transceiver with direction pin (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 11 20 Q A2 A (A 3) A1 pin 1 index θ Lp L 1 10 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.
PAGE 10
74LVT245B NXP Semiconductors 3.3 V octal transceiver with direction pin (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.
PAGE 11
74LVT245B NXP Semiconductors 3.3 V octal transceiver with direction pin (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 e detail X w M bp 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.
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74LVT245B NXP Semiconductors 3.3 V octal transceiver with direction pin (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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74LVT245B NXP Semiconductors 3.3 V octal transceiver with direction pin (3-state) 13. Abbreviations Table 10. Abbreviations Acronym Description BiCMOS Bipolar 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.
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74LVT245B NXP Semiconductors 3.3 V octal transceiver with direction pin (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.
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74LVT245B NXP Semiconductors 3.3 V octal transceiver with direction pin (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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Ordering information . . . . . . . . . . . . . . . . . . . . . 1 Functional diagram . . . . . . . . . . . . . . . . . . . . . . 2 Pinning information . . . . . . . . . . . . . . . . . . . . . .