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PDF 74AHCT245D Data sheet ( Hoja de datos )
| Número de pieza | 74AHCT245D | |
| Descripción | Octal bus transceiver; 3-state | |
| Fabricantes | NXP Semiconductors | |
| Logotipo |  |
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INTEGRATED CIRCUITS
DATA SHEET
74AHC245; 74AHCT245
Octal bus transceiver; 3-state
Product specification
Supersedes data of 1998 Sep 21
File under Integrated Circuits, IC06
1999 Sep 28
1 page  
Philips Semiconductors
Octal bus transceiver; 3-state
Product specification
74AHC245; 74AHCT245
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
VCC
VI
VO
Tamb
DC supply voltage
input voltage
output voltage
operating ambient temperature
range
tr,tf (∆t/∆f) input rise and fall rates
CONDITIONS
74AHC
74AHCT
UNIT
MIN. TYP. MAX. MIN. TYP. MAX.
2.0 5.0 5.5 4.5 5.0 5.5 V
0 − 5.5 0 − 5.5 V
0 − VCC 0 − VCC V
see DC and AC −40 +25 +85 −40 +25 +85 °C
characteristics per −40 +25 +125 −40 +25 +125 °C
device
VCC = 3.3 V ±0.3 V − − 100 − − − ns/V
VCC = 5 V ±0.5 V − − 20 − − 20
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134); voltages are referenced to GND (ground = 0 V).
SYMBOL
PARAMETER
CONDITIONS
VCC DC supply voltage
VI input voltage range
IIK DC input diode current
VI < −0.5 V; note 1
IOK DC output diode current
VO < −0.5 V or VO > VCC + 0.5 V; note 1
IO DC output source or sink current −0.5 V < VO < VCC + 0.5 V
ICC DC VCC or GND current
Tstg storage temperature range
PD power dissipation per package for temperature range: −40 to +125 °C; note 2
MIN. MAX. UNIT
−0.5 +7.0 V
−0.5 +7.0 V
− −20 mA
− ±20 mA
− ±25 mA
− ±75 mA
−65 +150 °C
− 500 mW
Notes
1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. For SO packages: above 70 °C the value of PD derates linearly with 8 mW/K.
For TSSOP packages: above 60 °C the value of PD derates linearly with 5.5 mW/K.
1999 Sep 28
5
5 Page 
Philips Semiconductors
Octal bus transceiver; 3-state
AC WAVEFORMS
Product specification
74AHC245; 74AHCT245
handbook, halfpage VI
An, Bn INPUT
GND
tPLH
VOH
Bn, An OUTPUT
VOL
VM
VM
VM
tPHL
VM
MNA176
FAMILY
AHC
AHCT
VI INPUT
REQUIREMENTS
GND to VCC
GND to 3.0 V
VM
INPUT
50% VCC
1.5 V
VM
OUTPUT
50% VCC
50% VCC
Fig.4 The input (An, Bn) to output (Bn, An) propagation delays.
handbook, full pagewidth
VI
OEn INPUT
GND
OUTPUT
LOW-to-OFF
OFF-to-LOW
VCC
VOL
OUTPUT
HIGH-to-OFF
OFF-to-HIGH
VOH
GND
VM
tPLZ
tPZL
tPHZ
VOL + 0.3 V
VOH − 0.3 V
VM
tPZH
VM
outputs
enabled
outputs
disabled
outputs
enabled
MNA177
FAMILY
VI INPUT
REQUIREMENTS
VM
INPUT
VM
OUTPUT
AHC
AHCT
GND to VCC
GND to 3.0 V
50% VCC 50% VCC
1.5 V
50% VCC
Fig.5 The 3-state output enable and disable times.
1999 Sep 28
11
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet 74AHCT245D.PDF ] | |
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