74HC7245 Datasheet, PDF (5/7 Pages) NXP Semiconductors – Octal bus Schmitt-trigger transceiver; 3-state

Philips Semiconductors
Octal bus Schmitt-trigger transceiver;
3-state
Product specification
74HC/HCT7245
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: bus driver
I_CC category: MSI
Note to HCT types
The value of additional quiescent supply current (∆I_CC) for a unit load of 1 is given in the family specifications.
To determine ∆I_CC per input, multiply this value by the unit load coefficient shown in the table below.
INPUT
A_n
B_n
OE
DIR
UNIT LOAD COEFFICIENT
0.33
0.33
1.50
1.00
TRANSFER CHARACTERISTICS FOR 74HCT
Voltages are referred to GND (ground = 0 V)
SYMBOL PARAMETER
T_amb (°C)
TEST CONDITIONS
74HCT
+25
−40 to +85
−40 to +125
UNIT
V_CC
(V)
WAVEFORMS
min. typ. max. min. max. min. max.
V_T+
positive-going threshold
2.0
2.0
2.1
2.1
2.0 V
2.1
4.5 Figs. 4 and 5
5.5
V_T−
negative-going threshold 0.7
0.8
0.64
0.6
0.74
0.7
V 4.5 Figs. 4 and 5
5.5
V_H
hysteresis (V_T+ − V_T−) 0.17 0.23
0.17 0.23
V 4.5 Figs. 4 and 5
5.5
December 1990
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