74hc245d.txt

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VIH HIGH-level input voltage VCC = 2.0 V 1.5 --V 
VCC = 4.5 V 3.15 --V 
VCC = 6.0 V 4.2 --V 
9397 750 14502 . Koninklijke Philips Electronics N.V. 2005. All rights reserved. 
Product data sheet Rev. 03 — 31 January 2005 7 of 22 

ICC quiescent supply current VI =VCC or GND; IO =0A; --80 mA 
VCC = 6.0 V 
Tamb = -40 °C to +125 °C 


Philips Semiconductors 74HC245; 74HCT245 

Octal bus tranceiver; 3-state 


Table 7: Static characteristics type 74HC245 …continued 

At recommended operating conditions; voltages are referenced to GND (ground = 0 V). 

Symbol Parameter Conditions Min Typ Max Unit 
VIL LOW-level input voltage VCC = 2.0 V --0.5 V 
VCC = 4.5 V --1.35 V 
VCC = 6.0 V --1.8 V 
VOH HIGH-level output voltage VI =VIH or VIL -
IO = -20 mA; VCC = 2.0 V 1.9 --V 
IO = -20 mA; VCC = 4.5 V 4.4 --V 
IO = -20 mA; VCC = 6.0 V 5.9 --V 
IO = -6.0 mA; VCC = 4.5 V 3.7 --V 
IO = -7.8 mA; VCC = 6.0 V 5.2 --V 
VOL LOW-level output voltage VI =VIH or VIL -
IO =20 mA; VCC = 2.0 V --0.1 V 
IO =20 mA; VCC = 4.5 V --0.1 V 
IO =20 mA; VCC = 6.0 V --0.1 V 
IO = 6.0 mA; VCC = 4.5 V --0.4 V 
IO = 7.8 mA; VCC = 6.0 V --0.4 V 
ILI input leakage current VI =VCC or GND; VCC = 6.0 V --±1.0 mA 
IOZ OFF-state output current VI =VIH or VIL; VO =VCC or GND; --±10.0 mA 
VCC = 6.0 V 
ICC quiescent supply current VI =VCC or GND; IO =0A; --160 mA 
VCC = 6.0 V 

Table 8: Static characteristics type 74HCT245 

At recommended operating conditions; voltages are referenced to GND (ground = 0 V). 

Symbol Parameter Conditions Min Typ Max Unit 
Tamb =25 °C 

VIH HIGH-level input voltage VCC = 4.5 V to 5.5 V 2.0 1.6 -V 
VIL LOW-level input voltage VCC = 4.5 V to 5.5 V -1.2 0.8 V 
VOH HIGH-level output voltage VI =VIH or VIL; VCC = 4.5 V 
IO = -20 mA 4.4 4.5 -V 
IO = -6 mA 3.98 4.32 -V 
VOL LOW-level output voltage VI =VIH or VIL; VCC = 4.5 V 
IO =20 mA -0 0.1 V 
IO = 6.0 mA -0.15 0.26 V 
ILI input leakage current VI =VCC or GND; VCC = 5.5 V --±0.1 mA 
IOZ OFF-state output current VI =VIH or VIL; VCC = 5.5 V; --±0.5 mA 
VO =VCC or GND per input pin; 
other inputs at VCC or GND; IO =0A 
ICC quiescent supply current VI =VCC or GND; IO =0A; --8.0 mA 
VCC = 5.5 V 
9397 750 14502 . Koninklijke Philips Electronics N.V. 2005. All rights reserved. 
Product data sheet Rev. 03 — 31 January 2005 8 of 22 


Philips Semiconductors 74HC245; 74HCT245 

Octal bus tranceiver; 3-state 


Table 8: Static characteristics type 74HCT245 …continued 

At recommended operating conditions; voltages are referenced to GND (ground = 0 V). 

Symbol Parameter Conditions Min Typ Max Unit 
DICC additional quiescent supply VI =VCC - 2.1 V; other inputs at 
current per input pin VI =VCC or GND; 
VCC = 4.5 V to 5.5 V; IO =0A 
An or Bn inputs -40 144 mA 
OE input -150 540 mA 
DIR input -90 324 mA 
CI input capacitance -3.5 -pF 
CI/O input/output capacitance -10 -pF 
Tamb = -40 °C to +85 °C 
VIH HIGH-level input voltage VCC = 4.5 V to 5.5 V 2.0 --V 
VIL LOW-level input voltage VCC = 4.5 V to 5.5 V --0.8 V 
VOH HIGH-level output voltage VI =VIH or VIL; VCC = 4.5 V 
IO = -20 mA 4.4 --V 
IO = -6 mA 3.84 --V 
VOL LOW-level output voltage VI =VIH or VIL; VCC = 4.5 V 
IO =20 mA --0.1 V 
IO = 6.0 mA --0.33 V 
ILI input leakage current VI =VCC or GND; VCC = 5.5 V --±1.0 mA 
IOZ OFF-state output current VI =VIH or VIL; VCC = 5.5 V; --±5.0 mA 
VO =VCC or GND per input pin; 
other inputs at VCC or GND; IO =0A 
ICC quiescent supply current VI =VCC or GND; IO =0A; --80 mA 
VCC = 5.5 V 
DICC additional quiescent supply VI =VCC - 2.1 V; other inputs at 
current per input pin VI =VCC or GND; 
VCC = 4.5 V to 5.5 V; IO =0A 
An or Bn inputs --180 mA 
OE input --675 mA 
DIR input --405 mA 
Tamb = -40 °C to +125 °C 
VIH HIGH-level input voltage VCC = 4.5 V to 5.5 V 2.0 --V 
VIL LOW-level input voltage VCC = 4.5 V to 5.5 V --0.8 V 
VOH HIGH-level output voltage VI =VIH or VIL; VCC = 4.5 V 
IO = -20 mA 4.4 --V 
IO = -6 mA 3.7 --V 
VOL LOW-level output voltage VI =VIH or VIL; VCC = 4.5 V 
IO =20 mA --0.1 V 
IO = 6.0 mA --0.4 V 
ILI input leakage current VI =VCC or GND; VCC = 5.5 V --±1.0 mA 
IOZ OFF-state output current VI =VIH or VIL; VCC = 5.5 V; --±10 mA 
VO =VCC or GND per input pin; 
other inputs at VCC or GND; IO =0A 
9397 750 14502 . Koninklijke Philips Electronics N.V. 2005. All rights reserved. 
Product data sheet Rev. 03 — 31 January 2005 9 of 22 


Philips Semiconductors 74HC245; 74HCT245 

Octal bus tranceiver; 3-state 


Table 8: Static characteristics type 74HCT245 …continued 

At recommended operating conditions; voltages are referenced to GND (ground = 0 V). 

Symbol Parameter Conditions Min Typ Max Unit 
ICC quiescent supply current VI =VCC or GND; IO =0A; 
VCC = 5.5 V 
--160 mA 
DICC additional quiescent supply 
current per input pin 
VI =VCC - 2.1 V; other inputs at 
VI =VCC or GND; 
VCC = 4.5 V to 5.5 V; IO =0A 
An or Bn inputs --196 mA 
OE input --735 mA 
DIR input --441 mA 

11. Dynamic characteristics
Table 9: Dynamic characteristics type 74HC245 

GND = 0 V; test circuit see Figure 7. 

Symbol Parameter Conditions Min Typ Max Unit 
Tamb = 25 °C 

tPHL, tPLH propagation delay An to Bn or Bn see Figure 5 
to An VCC = 2.0 V -25 90 ns 
VCC = 4.5 V -9 18 ns 
VCC = 5.0 V; CL =15pF -7 -ns 
VCC = 6.0 V -7 15 ns 
tPZH, tPZL 3-state output enable time OE to see Figure 6 
An or OE to Bn VCC = 2.0 V -30 150 ns 
VCC = 4.5 V -11 30 ns 
VCC = 6.0 V -9 26 ns 
tPHZ, tPLZ 3-state output disable time OE to see Figure 6 
An or OE to Bn VCC = 2.0 V -41 150 ns 
VCC = 4.5 V -15 30 ns 
VCC = 6.0 V -12 26 ns 
tTHL, tTLH output transition time see Figure 5 
VCC = 2.0 V -14 60 ns 
VCC = 4.5 V -5 12 ns 
VCC = 6.0 V -4 10 ns 
CPD power dissipation capacitance VI = GND to VCC 
[1] -30 -pF 
per transceiver 
Tamb = -40 °C to +85 °C 
tPHL, tPLH propagation delay An to Bn or Bn see Figure 5 
to An VCC = 2.0 V --115 ns 
VCC = 4.5 V --23 ns 
VCC = 6.0 V --20 ns 

9397 750 14502 . Koninklijke Philips Electronics N.V. 2005. All rights reserved. 

Product data sheet Rev. 03 — 31 January 2005 10 of 22 


Philips Semiconductors 74HC245; 74HCT245 
Octal bus tranceiver; 3-state 
Table 9: Dynamic characteristics type 74HC245 …continued 
GND = 0 V; test circuit see Figure 7. 

Symbol Parameter Conditions Min Typ Max Unit 
tPZH, tPZL 3-state output enable time OE to 
An or OE to Bn 
see Figure 6 
VCC = 2.0 V 
VCC = 4.5 V 
VCC = 6.0 V 
tPHZ, tPLZ 3-state output disable time OE to 
An or OE to Bn 
see Figure 6 
VCC = 2.0 V 
VCC = 4.5 V 
VCC = 6.0 V 
tTHL, tTLH output transition time see Figure 5 
VCC = 2.0 V 
VCC = 4.5 V 
VCC = 6.0 V 
Tamb = -40 °C to +125 °C 
tPHL, tPLH propagation delay An to Bn or Bn 
to An 
see Figure 5 
VCC = 2.0 V 
VCC = 4.5 V 
VCC = 6.0 V 
tPZH, tPZL 3-state output enable time OE to 
An or OE to Bn 
see Figure 6 
VCC = 2.0 V 
VCC = 4.5 V 
VCC = 6.0 V 
tPHZ, tPLZ 3-state output disable time OE to 
An or OE to Bn 
see Figure 6 
VCC = 2.0 V 
VCC = 4.5 V 
VCC = 6.0 V 
tTHL, tTLH output transition time see Figure 5 
VCC = 2.0 V 
VCC = 4.5 V 
VCC = 6.0 V 
[1] CPD is used to determine the dynamic power dissipation (PD in mW): 
PD =CPD ′ VCC2 ′ fi ′ N+ . (CL ′ VCC2 ′ fo) where: 
fi = input frequency in MHz; 
fo = output frequency in MHz; 
CL = output load capacitance in pF; 
VCC = supply voltage in V; 
N = number of inputs switching; 
. (CL ′ VCC2 ′ fo) = sum of outputs. 
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-190 ns 
-38 ns 
-33 ns 
-190 ns 
-38 ns 
-33 ns 
-75 ns 
-15 ns 
-13 ns 
-135 ns 
-27 ns 
-23 ns 
-225 ns 
-45 ns 
-38 ns 
-225 ns 
-45 ns 
-38 ns 
-90 ns 
-18 ns 
-15 ns 

9397 750 14502 . Koninklijke Philips Electronics N.V. 2005. All rights reserved. 

Product data sheet Rev. 03 — 31 January 2005 11 of 22 


Philips Semiconductors 74HC245; 74HCT245 
Octal bus tranceiver; 3-state 
Table 10: Dynamic characteristics type 74HCT245 
GND = 0 V; test circuit see Figure 7. 

Symbol Parameter Conditions Min Typ Max Unit 
Tamb = 25 °C 

tPHL, tPLH propagation delay An to Bn or Bn 
to An 
see Figure 5 
VCC = 4.5 V 
VCC = 5.0 V; CL =15pF 
tPZH, tPZL 3-state output enable time OE to 
An or OE to Bn 
VCC = 4.5 V; see Figure 6 
tPHZ, tPLZ 3-state output disable time OE to 
An or OE to Bn 
VCC = 4.5 V; see Figure 6 
tTHL, tTLH output transition time VCC = 4.5 V; see Figure 5 
CPD power dissipation capacitance 
per transceiver 
VI = GND to VCC - 1.5 V 
Tamb = -40 °C to +85 °C 
tPHL, tPLH propagation delay An to Bn or Bn 
to An 
VCC = 4.5 V; see Figure 5 
tPZH, tPZL 3-state output enable time OE to 
An or OE to Bn 
VCC = 4.5 V; see Figure 6 
tPHZ, tPLZ 3-state output disable time OE to 
An or OE to Bn 
VCC = 4.5 V; see Figure 6 
tTHL, tTLH output transition time VCC = 4.5 V; see Figure 5 
Tamb = -40 °C to +125 °C 
tPHL, tPLH propagation delay An to Bn or Bn 
to An 
VCC = 4.5 V; see Figure 5 
tPZH, tPZL 3-state output enable time OE to 
An or OE to Bn 
VCC = 4.5 V; see Figure 6 
tPHZ, tPLZ 3-state output disable time OE to 
An or OE to Bn 
VCC = 4.5 V; see Figure 6 
tTHL, tTLH output transition time VCC = 4.5 V; see Figure 5 
[1] CPD is used to determine the dynamic power dissipation (PD in mW): 
PD =CPD ′ VCC2 ′ fi ′ N+ . (CL ′ VCC2 ′ fo) where: 
fi = input frequency in MHz; 
fo = output frequency in MHz; 
CL = output load capacitance in pF; 
VCC = supply voltage in V; 
N = number of inputs switching; 
. (CL ′ VCC2 ′ fo) = sum of outputs. 
-
-
-
-
-
[1] -
-
-
-
-
-
-
-
-
12 22 ns 
10 -ns 
16 30 ns 
16 30 ns 
5 12 ns 
30 -pF 
-28 ns 
-38 ns 
-38 ns 
-15 ns 
-33 ns 
-45 ns 
-45 ns 
-18 ns 

9397 750 14502 . Koninklijke Philips Electronics N.V. 2005. All rights reserved. 

Product data sheet Rev. 03 — 31 January 2005 12 of 22 


Philips Semiconductors 74HC245; 74HCT245 

Octal bus tranceiver; 3-state 


12. Waveforms 
VI
An, Bn input
GND


VOH
Bn, An output
VOL


001aac433 
tPLHtPHL 
VM VM 
90 % 
10 % 
VM VM 
tTHL tTLH 
Measurement points are given in Table 11.
VOL and VOH are typical voltage output drop that occur with the output load.


Fig 5. Input (An, Bn) to output (Bn, An) propagation delays and output transition times 

VI 

OE input 

GND 

VCC

output
LOW-to-OFF
OFF-to-LOW
VOL


VOH

output
HIGH-to-OFF
OFF-to-HIGH
GND


enabled 

enabled 

disabled 

tPLZ 
tPHZ 
outputs outputs 
90 % 
10 % 
outputs 
VM 
tPZL 
tPZH 
VM 
VM 
tr tf 
90 % 
10 % 
001aac479 

Measurement points are given in Table 11. 
VOL and VOH are typical voltage output drop that occur with the output load. 

Fig 6. 3-state output enable and disable times 

Table 11: Measurement points 

Type Input Output 
VM VM 
74HC245 0.5VCC 0.5VCC 

74HCT245 1.3 V 1.3 V 

9397 750 14502 . Koninklijke Philips Electronics N.V. 2005. All rights reserved. 

Product data sheet Rev. 03 — 31 January 2005 13 of 22 


Philips Semiconductors 74HC245; 74HCT245 

Octal bus tranceiver; 3-state 


Test data is given in Table 12. 
Definitions test circuit: 
RT = Termination resistance should be equal to output impedance Zo of the pulse generator. 
CL = Load capacitance including jig and probe capacitance. 
RL = Load resistor. 
Fig 7. Load circuitry for switching times 
mgk563 
D.U.T 
VCC VCC 
VI VO 
RT 
RL = 1 kW 
CL 50 pF 
open PULSE 
GENERATOR 
Table 12: Test data 

Type Input Test 
VI tr, tf tPHL, tPLH tPZH, tPHZ tPZL, tPLZ 

74HC245 VCC 6 ns open GND VCC 

74HCT245 3 V 6 ns open GND VCC 

9397 750 14502 . Koninklijke Philips Electronics N.V. 2005. All rights reserved. 

Product data sheet Rev. 03 — 31 January 2005 14 of 22 


Philips Semiconductors 74HC245; 74HCT245 

Octal bus tranceiver; 3-state 


13. Package outline 
DIP20: plastic dual in-line package; 20 leads (300 mil) SOT146-1 

UNIT A 
max. 
1 2 b1 c D E e MHL 
REFERENCESOUTLINE 
VERSION 
EUROPEAN 
PROJECTION ISSUE DATE 
IEC JEDEC JEITA 
mm 
inches 
DIMENSIONS (inch dimensions are derived from the original mm dimensions) 
SOT146-1 
99-12-27 
03-02-13 
A 
min. 
A 
max. b Z 
max. wMEe1 
1.73 
1.30 
0.53 
0.38 
0.36 
0.23 
26.92 
26.54 
6.40 
6.22 
3.60 
3.05 
0.2542.54 7.62 
8.25 
7.80 
10.0 
8.3