#74LS190

Description: 4-bit Synchronous Up/Down BCD Counter

Datasheet: http://www.ti.com/lit/gpn/sn74LS190

Pinout:

    +-----------+
 P1 |[ 1]   [16]| VCC
 Q1 |[ 2]   [15]| P0
 Q0 |[ 3]   [14]| CP
 CE |[ 4]   [13]| RC
D/U |[ 5]   [12]| TC
 Q2 |[ 6]   [11]| PL
 Q3 |[ 7]   [10]| P2
GND |[ 8]    [9]| P3
    +-----------+