74HCT245N NXP

74HC245 74HCT245 Octal bus tranceiver 3-state Rev. 03 31 January 2005 Product data sheet 1. General description The 74HC245 74HCT245 is a high-speed Si-gate CMOS device and is pin compatible with Low-Power Schottky TTL (LSTTL). The 74HC245 74HCT245 is an octal transceiver featuring non-inverting 3-state bus compatible outputs in both send and receive directions. The 74HC245 74HCT245 features an output enable input (OE) for easy cascading and a send/receive input (DIR) for direction control. OE controls the outputs so that the buses are effectively isolated. The 74HC245 74HCT245 is similar to the 74HC640 74HCT640 but has true (non-inverting) outputs. 2. Features Octal bidirectional bus interface Non-inverting 3-state outputs Multiple package options Complies with JEDEC standard no. 7A ESD protection: HBM EIA/JESD22-A114-B exceeds 2000 V MM EIA/JESD22-A115-A exceeds 200 V Specied from - 40 Cto+85 C and from - 40 C to +125 C 3. Quick reference data Table 1: Quick reference data GND = 0 V T =25 C t =t = 6 ns. amb r f Symbol Parameter Conditions Min Typ Max Unit Type 74HC245 t , t propagation delay C =15pF -7 -ns PHL PLH L An to Bn or Bn to An V =5V CC C input capacitance - 3.5 - pF I C input/output capacitance - 10 - pF I/O 1 C power dissipation V = GND to V -30 - pF PD I CC capacitance per transceiver Type 74HCT245 t , t propagation delay C =15pF -10 - ns PHL PLH L An to Bn or Bn to An V =5V CC74HC245 74HCT245 Philips Semiconductors Octal bus tranceiver 3-state Table 1: Quick reference data continued GND = 0 V T =25 C t =t = 6 ns. amb r f Symbol Parameter Conditions Min Typ Max Unit C input capacitance - 3.5 - pF I C input/output capacitance - 10 - pF I/O 1 C power dissipation V = GND to -30 - pF PD I capacitance per V - 1.5 V CC transceiver 1 C is used to determine the dynamic power dissipation (P in W): PD D 2 2 P =C V f N+ (C V f ) where: D PD CC i L CC o f = input frequency in MHz i f = output frequency in MHz o C = output load capacitance in pF L V = supply voltage in V CC N = number of inputs switching 2 (C V f ) = sum of outputs. L CC o 4. Ordering information Table 2: Ordering information Type number Package Temperature range Name Description Version 74HC245N - 40 C to +125 C DIP20 plastic dual in-line package 20 leads (300 mil) SOT146-1 74HC245D - 40 C to +125 C SO20 plastic small outline package 20 leads SOT163-1 body width 7.5 mm 74HC245PW - 40 C to +125 C TSSOP20 plastic thin shrink small outline package 20 leads SOT360-1 body width 4.4 mm 74HC245DB - 40 C to +125 C SSOP20 plastic shrink small outline package 20 leads SOT339-1 body width 5.3 mm 74HC245BQ - 40 C to +125 C DHVQFN20 plastic dual-in-line compatible thermal enhanced SOT764-1 very thin quad at package no leads 20 terminals body 2.5 4.5 0.85 mm 74HCT245N - 40 C to +125 C DIP20 plastic dual in-line package 20 leads (300 mil) SOT146-1 74HCT245D - 40 C to +125 C SO20 plastic small outline package 20 leads SOT163-1 body width 7.5 mm 74HCT245PW - 40 C to +125 C TSSOP20 plastic thin shrink small outline package 20 leads SOT360-1 body width 4.4 mm 74HCT245DB - 40 C to +125 C SSOP20 plastic shrink small outline package 20 leads SOT339-1 body width 5.3 mm 74HCT245BQ - 40 C to +125 C DHVQFN20 plastic dual-in-line compatible thermal enhanced SOT764-1 very thin quad at package no leads 20 terminals body 2.5 4.5 0.85 mm 9397 750 14502 Koninklijke Philips Electronics N.V. 2005. All rights reserved. Product data sheet Rev. 03 31 January 2005 2 of 22