HEF4528B Datasheet | NXP Semiconductors

description The HEF4528B is a dual retriggerable-resetable monostable multivibrator. Each multivibrator has an active LOW input (n A), and active HIGH input (n B), an active LOW clear direct input (n CD), an output (n Q) and its plement (n Q), and two external timing ponent connecting pins (n CEXT, always connected to ground, and n REXT/CEXT). An external timing capacitor (CEXT) must be connected between n CEXT and n REXT/CEXT and an external resistor (REXT) must be connected between n REXT/CEXT and VDD. The output pulse duration is determined by the external timing ponents CEXT and REXT. A HIGH-to-LOW transition on n A when n B is LOW or a LOW-to-HIGH transition on n B when n A is HIGH produces a positive pulse (LOW-HIGH-LOW) on n Q and a negative pulse (HIGH-LOW-HIGH) on n Q if the n CD is HIGH. A LOW on n CD forces n Q LOW, n Q HIGH and inhibits any further pulses until n CD is HIGH. It operates over a remended VDD power supply range of 3 V to 15 V referenced to VSS (usually ground). Unused inputs must be connected to VDD, VSS, or another input. 2. Features and benefits - Fully static operation - 5 V, 10 V, and 15 V parametric ratings - Standardized symmetrical output characteristics - Specified from - 40 C to +85 C - plies with JEDEC standard JESD 13-B 3. Ordering information Table 1. Ordering information All types operate from - 40 C to +85 C. Type number Package Name Description HEF4528BP DIP16 plastic dual in-line package; 16 leads (300 mil) HEF4528BT SO16 plastic small outline package; 16 leads; body width 3.9 mm Version SOT38-4 SOT109-1 NXP Semiconductors 4. Functional diagram 2 1REXT/CEXT 1 1CEXT 5 1A 4 1B 3 1CD 14 2REXT/CEXT 15 2CEXT 11 2A 12 2B 13 2CD 1Q 6 1Q 7 2Q 10 2Q 9 001aae727 Fig 1. Functional diagram Dual monostable multivibrator n CEXT n REXT/ CEXT n A n B n CD n Q n Q 001aae729 Fig 2. Logic diagram for one monostable multivibrator Product data sheet All information provided in this document is subject to legal...