HD74BC640A Datasheet, PDF (3/8 Pages) Hitachi Semiconductor – Octal Bus Transceivers With 3 State Outputs

HD74BC640A
Logic Diagram
DiR
G
A1
B1
A2
B2
A3
B3
A4
B4
A5
B5
A6
B6
A7
B7
A8
B8
Electrical Characteristics (Ta = –40 to +85°C)
Item
Input voltage
Output voltage
Input diode voltage
Input current
Output short circuit current*¹
Off state output current
Supply current
Symbol
V_IH
V_IL
V_OH
V_OL
V_IK
I_I
I_OS
I_OZH
I_OZL
I_CCL
V_CC (V)
4.5
4.5
4.5
4.5
4.5
5.5
5.5
5.5
5.5
5.5
5.5
5.5
5.5
Min
2.0
—
2.4
2.0
—
—
—
—
—
—
—
–100
—
—
—
Max
—
0.8
—
—
0.5
0.55
–1.2
–250
100
1.0
100
–225
–100
–250
29.5
Unit
V
V
V
V
V
V
V
µA
µA
µA
µA
mA
µA
µA
mA
Test Conditions
I_OH = –3 mA
I_OH = –15 mA
I_OL = 48 mA
I_OL = 64 mA
I_IN = –18 mA
V_IN = 0 V
An or Bn, V_IN = 5.5 V
DiR or G, V_IN = 5.5 V
DiR or G, V_IN = 7 V
V_O = 0 V, V_IN = 0 or 5.5 V
V_O = 2.7 V
V_O = 0.5 V
V_IN = 0 or 5.5 V
All outputs is “L”
I_CCH
5.5
—
2.5
mA
V_IN = 0 or 5.5 V
All outputs is “H”
I_CCZ
5.5
—
4.5
mA
V_IN = 0 or 5.5 V
All outputs is “Z”
I_CCT*²
5.5
—
1.5
mA
V_IN = 3.4 or 0.5 V
Notes: 1. Not more than one output should be shorted at a time and duration of the short circuit should not exceed one
second.
2. When input by the TTL level, it shows I_CC increase at per one input pin.
Rev.2.00, Jul.16.2004, page 3 of 7