Datasheet

9397 750 13812 © Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet Rev. 03 — 12 November 2004 7 of 25
Philips Semiconductors
74HC40103
8-bit synchronous binary down counter
8. Functional description
8.1 Function table
[1] H = HIGH voltage level;
L = LOW voltage level;
X = don’t care.
[2] Clock connected to CP.
Synchronous operation: changes occur on the LOW-to-HIGH CP transition.
Jam inputs: MSD = P7, LSD = P0.
9. Limiting values
[1] Above 70 °C: P
tot
derates linearly with 12 mW/K.
[2] Above 70 °C: P
tot
derates linearly with 8 mW/K.
Table 4: Function table
[1]
Control inputs Preset mode Action
[2]
MR PL PE TE
L X X X asynchronous clear to maximum count
H L X X asynchronous preset asynchronously
H L X synchronous preset on next LOW-to HIGH clock transition
H L synchronous count down
H synchronous inhibit counter
Table 5: Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to
GND (ground = 0 V).
Symbol Parameter Conditions Min Max Unit
V
CC
supply voltage −0.5 +7 V
I
IK
input diode current V
I
< −0.5 V or V
I
>V
CC
+ 0.5 V - ±20 mA
I
OK
output diode current V
O
< −0.5 V or
V
O
>V
CC
+ 0.5 V
- ±20 mA
I
O
output source or sink
current
V
O
= −0.5 V to V
CC
+ 0.5 V - ±25 mA
I
CC
, I
GND
V
CC
or GND current - ±50 mA
T
stg
storage temperature −65 +150 °C
P
tot
power dissipation
DIP16 package
[1]
- 750 mW
SO16, SSOP16 and
TSSOP16 packages
[2]
- 500 mW